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Cape Gooseberry

Physalis peruviana
Also known as: Goldenberry, Peruvian Groundcherry, Poha Berry

Cape Gooseberry is a vegetable in the Solanaceae family. It grows best in full sun with medium moisture, and is listed for USDA zones 2-13. Plants reach harvest about 90–120 days after planting and sit about 12 inches apart.

Varieties

1 from True Leaf Market · sorted by days to maturity
  • Large Fruit90–120 days

    Heirloom; Vegetable; Annual

    90-120 days. Physalis peruviana. Cape Gooseberry, also known as goldenberry or Peruvian groundcherry, is a warm-season tender plant grown as an annual in cooler climates. It produces bushy, spreading plants bearing golden-orange, tart-sweet berries enclosed in papery husks. The fruit is eaten fresh, dried, or made into jams and is borne all season once flowering begins.

    View on True Leaf Market
Family
Solanaceae
Category
Vegetable
Form
Bush
Lifecycle
annual
Zone
2-13
Height
1–3 ft
Spread
1–2 ft
Sun
Full sun

Plant spacing

1 plant per square footSquare-foot planting diagram: one cape gooseberry fills a 1-foot square, spaced 12 inches from its neighbors.
1 plant per square foot

In a square-foot bed, space cape gooseberry about 12 in apart — that fits 1 plant in each 1-foot square (1×1). Wider rows or containers space the same.

Water
Medium

Plan your cape gooseberry planting

Add cape gooseberry to a free GardenDraft plan and get sow, transplant, and harvest dates computed for your ZIP code — with a drag-and-drop bed layout and reminders when it’s time to plant.

Start your free plan →

At a glance

Days to harvest
90–120 days
From transplant or sow to first harvest
Harvest style
Keep picking
Crops over several weeks
After harvest
Use within days
Quality eases off after peak
Frost tolerance
Tender · to ~32°F
Lowest temperature the foliage usually survives
Germination
~60%
Typical minimum germination rate

Storing & preserving

Most keep best refrigerated; storage crops prefer a cool, dry spot.

  • Freeze: Blanch briefly, cool, then freeze — keeps color and texture.
  • Can: Pressure-can low-acid vegetables; water-bath only pickled/acidified ones.

General home-preservation guidance — for tested processing times and safety, follow the National Center for Home Food Preservation.

Growing timeline

When to plant and harvest cape gooseberryPlanting timeline for cape gooseberry, relative to last frost: start indoors from 7 weeks before last frost to 1 week after last frost; grow from 1 week after last frost to 14 weeks after last frost; harvest from 14 weeks after last frost to 18 weeks after last frost.Start indoorsGrowHarvestLast frostTransplant
Start cape gooseberry indoors ~8 weeks before transplanting 1 week after last frost; first harvest 14 weeks after last frost.
Seed to transplant
42-56 days
Outdoor planting
7 to 14 days vs frost
Propagation
Seed
Schedule anchor
Last Frost

Care & troubleshooting— extension-sourced, with citations

When to feed, prune & water

Attract beneficial insects and protect pollinators

Protection
  • Routine carePlant insectary flowers and tolerate light pestsstrong evidence — extension confidence

    Grow a diversity of flowering plants (including small-flowered umbels and asters) to feed predators and parasitoids, and tolerate low pest numbers so natural enemies have prey to stick around.

    Source: UC IPM; UMN Extension

  • Routine careNever spray open bloomsstrong evidence — extension confidence

    Avoid insecticides on flowering plants and apply any needed sprays in the evening when pollinators aren't active, and favor selective products over broad-spectrum ones to spare bees and beneficials.

    Source: UC IPM

Mulch to suppress weeds and retain moisture

Mulch
  • Routine careApply organic mulch around plantsstrong evidence — extension confidence

    Spread a few inches of straw, shredded leaves, or compost around established plants (keeping it off stems) to hold soil moisture, suppress weeds, and moderate soil temperature; wait until soil has warmed for heat-loving crops.

    Source: UMN Extension; Missouri Botanical Garden

Plan crop rotation

Rotation
  • Routine careRotate plant families between bedsstrong evidence — extension confidence

    Avoid planting the same family in the same bed in consecutive years (aim for a 3+ year gap), grouping crops by family so soilborne diseases and pests that build up don't carry over to the next susceptible crop.

    Source: UMN Extension; Cornell

  • Routine careSequence for soil healthmoderate evidence — extension confidence

    Follow heavy feeders like tomatoes and brassicas with legumes or a cover crop to support soil fertility and structure, and keep simple notes each year so you can track where each family grew.

    Source: UMN Extension

Protect the garden from deer

Protection
  • Routine careFence the gardenstrong evidence — extension confidence

    A fence about 8 feet tall and tight to the ground is the most reliable barrier; an outward-angled or double fence, or monofilament line strung at 30 to 36 inches, can also deter deer on smaller beds.

    Source: UMN Extension; Cornell CCE

  • Routine careRotate repellents as a supplement· every 2 wksmoderate evidence — extension confidence

    Where fencing isn't feasible, apply odor/taste repellents and alternate formulations, reapplying every couple of weeks and after rain; combining repellents with fencing works best.

    Source: UMN Extension; PennState Extension

Water deeply at fruiting

Watering
  • Routine careProvide steady deep watering during fruiting· every 3 daysstrong evidence — extension confidence

    Once plants begin flowering and setting fruit, supply about 1 to 1.5 inches of water per week in deep soakings rather than light sprinkles, ideally at the base; even moisture reduces cracking, blossom-end rot, and bitter or misshapen fruit.

    Source: UMN Extension: Tomato disorders; UMN Extension: Growing tomatoes

Clean up debris and sanitize at season end

Sanitation

Unusual this time of year.

  • Routine careRemove spent plants and fallen debrisstrong evidence — extension confidence

    Pull and clear old plants, dropped fruit, and leaf litter at season end, since many pests and diseases overwinter in this debris; dispose of diseased material rather than composting it.

    Source: UMN Extension; Cornell

  • Routine careClean tools, stakes, and cagesmoderate evidence — extension confidence

    Wash and sanitize stakes, cages, and tools that touched diseased plants before storing or reusing them to avoid carrying pathogens into next season.

    Source: Cornell; UMN Extension

Cutworm collars at transplant

Protection

Unusual this time of year.

  • Routine careSet a collar around each new transplantstrong evidence — extension confidence

    When setting out transplants, slip a collar (a toilet-paper tube, paper cup with the bottom cut out, or similar) around each stem and press it a couple inches into the soil so it stands a few inches above ground, blocking cutworms from the stem.

    Source: UMN Extension: Cutworms; UC IPM: Cutworms

Harden off seedlings

Protection

Unusual this time of year.

Read: starting seeds indoors

Something looks wrong?

Describe what you see on your cape gooseberryand we'll rank the likely causes — most likely first, least-invasive fix first.

Bacterial soft rot

Diseasesevere

Symptoms: mushy water-soaked decay of fleshy tissue; slimy soft rot of heads, bulbs, roots, or fruit; foul odor from rotting tissue; rapid collapse after wounding or in warm wet conditions; rot spreading in storage

  • CulturalRemove rotting plants and produce (manage, not cure)strong evidence — extension confidence

    Soft rot can't be cured once tissue breaks down; promptly remove and discard affected plants and produce so the bacteria don't spread to neighbors or other stored vegetables.

    Source: Cornell NYS IPM

  • CulturalAvoid wounds and excess moisturestrong evidence — extension confidence

    Harvest in dry conditions, handle gently to avoid bruising, control insects that create entry wounds, and improve drainage; cure and store bulbs and roots cool and dry.

    Source: Cornell NYS IPM

  • CulturalDon't overwater and rotatemoderate evidence — extension confidence

    Avoid waterlogged soil and overhead watering that splashes bacteria, and rotate away from previously affected fleshy crops to lower disease pressure.

    Source: Cornell NYS IPM

Fusarium / Verticillium wilt

Diseasesevere

Symptoms: wilting that doesn't recover overnight; yellowing climbs one side or one branch first; brown streaking inside a cut stem

  • CulturalRemove the plant; rotate and choose resistant varietiesstrong evidence — extension confidence

    There is no cure once a plant is infected. Pull it, avoid planting the same family there for 3-4 years, and grow V/F-resistance-coded varieties next season.

    Source: UMN Extension: Tomato Wilts

Read: diagnosing leaf spots & yellowing

Late blight

Diseasesevere

Symptoms: large greasy gray-green blotches on leaves; white fuzzy growth on undersides in damp weather; brown firm rot on fruit/tubers; spreads fast in cool wet spells

  • CulturalRemove and bag infected plantsstrong evidence — extension confidence

    Late blight is highly contagious and can wipe out a planting in days. Pull and bag (don't compost) symptomatic plants to protect neighbors and nearby gardens.

    Source: Cornell: Late Blight

Phytophthora blight (root and crown rot)

Diseasesevere

Symptoms: sudden wilting and collapse of peppers or squash; dark water-soaked lesions at the crown or stem base; white cottony growth on infected fruit; root and crown rot; vine and fruit rot after heavy rain or in wet low spots

  • CulturalRemove affected plants at first sign (manage, not cure)strong evidence — extension confidence

    Infected plants can't be saved; promptly pull and destroy them at the start of an outbreak to slow spread, and avoid working in beds when wet.

    Source: Cornell Vegetables; UMN Extension

  • CulturalImprove drainage and avoid waterloggingstrong evidence — extension confidence

    Plant on raised beds, never let beds stay saturated, and water with drip rather than flooding, since this water mold thrives in standing water and saturated soil.

    Source: Cornell Vegetables; UMN Extension

  • CulturalRotate and choose tolerant varietiesmoderate evidence — extension confidence

    Rotate out of peppers, cucurbits, and tomatoes for at least three years where the disease has occurred, and select tolerant or resistant varieties when available.

    Source: Cornell Vegetables

Root-knot nematodes

Nematodesevere

Symptoms: galls or knots along roots; stunted plants; yellowing and midday wilting that recovers at night; poor vigor despite good care; patchy poor growth in beds

  • CulturalConfirm with a soil test, then rotate (manage, not cure)strong evidence — extension confidence

    Root-knot nematodes can't be eradicated from garden soil, so confirm via a county Extension nematode assay and rotate beds to non-hosts or resistant varieties (look for VFN-type resistance in tomato).

    Source: Clemson HGIC; UF/IFAS

  • CulturalPlant suppressive cover/rotation cropsmoderate evidence — extension confidence

    A solid planting of French marigolds grown 2+ months and turned under, or cover crops such as sorghum-sudangrass or cowpea, can lower populations between susceptible crops.

    Source: UF/IFAS; Clemson HGIC

  • CulturalSanitation and organic mattermoderate evidence — extension confidence

    Avoid moving infested soil on tools or transplants, build soil organic matter to support beneficial organisms, and keep plants well watered to help them tolerate root damage.

    Source: UC IPM; Clemson HGIC

Southern blight

Diseasesevere

Symptoms: sudden wilting in hot weather; yellowing then collapse of whole plant; white fan-like mold mat at the stem base and soil; tan-brown mustard-seed-sized sclerotia near soil line; girdled rotted lower stem

  • CulturalRemove infected plants and surrounding soil (manage, not cure)strong evidence — extension confidence

    Once a plant collapses it can't be cured; dig out the plant plus the top few inches of nearby soil containing sclerotia and dispose of it, avoiding spread on tools.

    Source: Clemson Land-Grant Press; UC IPM

  • CulturalBury residue and rotatemoderate evidence — extension confidence

    Deep-turn soil to bury sclerotia, remove crop debris at season end, and rotate susceptible solanaceous and legume crops with grasses for several seasons.

    Source: Clemson Land-Grant Press

  • CulturalAdjust soil pH and plant earlymoderate evidence — extension confidence

    Maintain soil pH at the level recommended for the crop, since the disease is worse in low-pH soils, and time plantings so harvest begins before peak summer heat favors the fungus.

    Source: Clemson Land-Grant Press

Tomato spotted wilt virus

Virussevere

Symptoms: bronzing or purpling of young leaves; ringspots and concentric rings on leaves and fruit; one-sided or stunted growth; dark streaks on stems; mottled or blotchy ripening fruit

  • CulturalRemove infected plants (cannot be cured)strong evidence — extension confidence

    There is no cure once a plant is infected, so promptly pull and dispose of symptomatic plants to reduce the virus reservoir that thrips spread to healthy plants.

    Source: UC IPM; UMN Extension

  • CulturalStart clean and control weeds and thripsstrong evidence — extension confidence

    Use virus- and thrips-free transplants, choose resistant varieties (Sw-5 tomatoes, Tsw peppers) where available, and control weeds around the garden that harbor both virus and thrips vectors.

    Source: UC IPM; UF/IFAS

Read: diagnosing leaf spots & yellowing

White mold (Sclerotinia stem rot)

Diseasesevere

Symptoms: water-soaked stem or branch lesions; fluffy white cottony mold on stems and pods; sudden wilting of part of a plant; hard black sclerotia inside or on stems; collapse during cool wet bloom periods

  • CulturalRemove infected plants (manage, not cure)strong evidence — extension confidence

    There's no cure for an infected plant; cut out and bag affected plants including the black sclerotia, and don't compost them, since sclerotia survive years in soil.

    Source: UMN Extension; UC IPM

  • CulturalOpen the canopy and rotatestrong evidence — extension confidence

    Space plants widely, control weeds, orient rows to prevailing wind, and avoid overhead watering at bloom to dry the canopy; rotate to non-host crops (corn or other grasses) for several years.

    Source: UMN Extension; UC IPM

  • CulturalWater at the base, not overheadmoderate evidence — extension confidence

    Use drip or soaker irrigation to keep foliage and the soil surface drier, which discourages the sclerotia germination and mycelial growth that drive white mold.

    Source: UC IPM

Blister beetles

Pestmoderate

Symptoms: swarms of elongated soft-bodied beetles; rapid defoliation of leaves and flowers; gray, black, or striped beetles clustered on plants; skeletonized foliage on tomatoes and beans

  • CulturalHand-pick wearing gloves· every 2 daysmoderate evidence — extension confidence

    Wear gloves (these beetles release a blistering fluid) and knock beetles into soapy water, or use row cover ahead of swarms; their larvae eat grasshopper eggs, so tolerate light feeding when you can.

    Source: UMN Extension; Missouri Botanical Garden

  • OrganicSpot-treat heavy swarms· every 1 wkmoderate evidence — extension confidence

    If a large swarm threatens a planting, a pyrethrin or other labeled insecticide can knock them back per the label; avoid spraying open blooms to protect pollinators.

    Always follow the product label — it is the law.

    Source: Missouri Botanical Garden

Botrytis gray mold

Diseasemoderate

Symptoms: fuzzy gray-brown mold on leaves, stems, flowers, or fruit; soft watery rot on fruit and blossoms; dieback from cut or wounded stems; mold spreading in cool humid still conditions; blighted flowers that fail to set

  • CulturalRemove infected tissue and old blossomsstrong evidence — extension confidence

    Prune out moldy leaves, stems, and fruit and clear fallen blossoms and debris where the fungus gets started, disposing of them rather than composting.

    Source: UMN Extension; Cornell

  • CulturalImprove airflow and reduce leaf wetnessstrong evidence — extension confidence

    Space and stake plants for good air movement, water at the base in the morning, and harvest ripe fruit promptly so botrytis has fewer cool, humid, wet surfaces to colonize.

    Source: UMN Extension; Cornell

Damping-off (seedlings)

Diseasemoderate

Symptoms: seedlings flop over and collapse at the soil line; thin water-soaked pinched stem base; fungus gnats or constantly wet mix

  • CulturalDry out, ventilate, sow into clean mixstrong evidence — extension confidence

    Use sterile seed-starting mix, bottom-water and let the surface dry between waterings, add airflow, and don't over-sow. Damping-off can't be cured once a seedling collapses.

    Source: UMN Extension: Damping-off

Read: starting seeds indoors

Early blight

Diseasemoderate

Symptoms: yellow leaves with dark concentric-ring (bullseye) spots; spotting marches up from the bottom; oldest/lowest leaves first

  • CulturalRemove affected lower leavesstrong evidence — extension confidence

    Pick off spotted leaves into the trash (not compost). Mulch heavily to stop soil splash and water at the base.

    Source: UMass Extension

  • CulturalPrune for airflowstrong evidence — extension confidence

    Thin crowded interior foliage so leaves dry quickly after rain or dew.

    Source: UMass Extension

  • ChemicalCopper - label use only· every 1 wk · ~4 wksmoderate evidence — extension confidence

    Only if established and spreading. Apply per label every 7-10 days; follow rates and pre-harvest intervals.

    Always follow the product label — it is the law.

    Source: Cornell Vegetable MD Online

Read: diagnosing leaf spots & yellowing

Herbicide drift damage (growth-regulator)

Disordermoderate

Symptoms: cupped, curled, or strap-like distorted new leaves; twisted stems and petioles; parallel veins on narrowed young leaves; stunting and delayed fruiting; symptoms appearing on new growth days after a nearby spray

  • CulturalIdentify the source and protect future plantingsstrong evidence — extension confidence

    Growth-regulator herbicides like 2,4-D and dicamba cause this distortion via drift or contaminated sprayers and mulch; identify and stop the source, and never use a sprayer that previously held herbicide on the garden.

    Source: UMN Extension; PennState Extension

  • CulturalSupport recovery if exposure was lightmoderate evidence — extension confidence

    Plants only lightly exposed (not directly sprayed) often outgrow the damage; keep them watered and lightly fed so they can push out normal new growth, though fruiting may be delayed.

    Source: UMN Extension

Japanese beetles

Pestmoderate

Symptoms: leaves skeletonized between veins; lacy chewed foliage; metallic green-bronze beetles clustered on plants; feeding worst in warm midsummer sun

Potassium deficiency

Deficiencymoderate

Symptoms: yellowing and browning along older leaf margins; scorched curled leaf edges; weak stems; poor or uneven fruit ripening; symptoms starting on lower, older leaves

  • CulturalConfirm with a soil test firststrong evidence — extension confidence

    Edge scorch on older leaves has several causes, so get a soil test before adding potassium; over-applying can lock out magnesium and calcium.

    Source: UMN Extension; Missouri Botanical Garden

  • OrganicApply potassium per soil-test guidancemoderate evidence — extension confidence

    If the test confirms low potassium, apply a potassium source (such as sulfate of potash) at the labeled/test-recommended rate and keep watering even, since drought worsens uptake.

    Always follow the product label — it is the law.

    Source: UMN Extension

Read: diagnosing leaf spots & yellowing

Root rot from overwatering / poor drainage

Diseasemoderate

Symptoms: stunted yellowing plants that wilt despite wet soil; soft brown mushy roots; sloughing root outer layer leaving thread-like core; poor growth in low or compacted wet spots; seedlings collapsing at the soil line

Spider mites

Pestmoderate

Symptoms: fine pale stippling/speckling on leaves; fine webbing on undersides in hot dry spells; leaves bronzing and dropping

  • CulturalHose down and raise humidity· every 3 days · ~2 wksstrong evidence — extension confidence

    Mites thrive in hot, dry, dusty conditions. Spray foliage (especially undersides) with water to dislodge them and reduce dust.

    Source: UC IPM

  • OrganicInsecticidal soap or horticultural oil - label use only· every 5 days · ~2 wksmoderate evidence — extension confidence

    Apply to undersides per label; mites resist many products, so soaps/oils are preferred. Not in extreme heat.

    Always follow the product label — it is the law.

    Source: UC IPM

Stink bugs (brown marmorated and native)

Pestmoderate

Symptoms: cloudy or corky spots on fruit; dimpled or pitted fruit; catfacing on tomatoes; shield-shaped brown or green bugs; barrel-shaped egg clusters on leaf undersides

  • CulturalExclude with row cover and clear nearby weedsstrong evidence — extension confidence

    Cover susceptible crops with floating row cover before bugs arrive, and remove weeds and groundcover near the garden in early spring where stink bugs feed before moving to crops. Lift covers on flowering crops that need pollination.

    Source: UMN Extension; UC IPM Pest Notes

  • CulturalHand-pick bugs and egg masses· every 3 daysstrong evidence — extension confidence

    Scout in the morning and drop adults, nymphs, and egg clusters into a bucket of soapy water; regular hand-picking keeps low populations in check since most garden insecticides work poorly on adults.

    Source: UMN Extension; UC IPM

  • OrganicSpot-treat young nymphs if numbers climb· every 1 wkmoderate evidence — extension confidence

    If small nymphs are abundant, a botanical such as pyrethrin or azadirachtin, or insecticidal oil, may give some suppression per the label; adults are largely unaffected, so rely mainly on exclusion and hand-picking.

    Always follow the product label — it is the law.

    Source: UC IPM

Thrips on fruiting vegetables

Pestmoderate

Symptoms: silvery or stippled flecking on leaves; black specks of frass; distorted or scarred young leaves and fruit; tiny slender insects in flowers; deformed fruit set

  • CulturalRemove weed and crop reservoirsstrong evidence — extension confidence

    Control flowering weeds in and around the garden and remove spent host crops promptly, since thrips build up on these and move onto fruiting vegetables; avoid planting next to onions, garlic, or cereals where thrips numbers spike.

    Source: UC IPM; UF/IFAS

  • CulturalKeep plants vigorous and rinse foliagemoderate evidence — extension confidence

    Water and feed adequately so plants tolerate feeding, and a forceful water spray can knock down populations; reflective mulch can also deter thrips from settling on young plants.

    Source: UC IPM

  • OrganicTreat with spinosad or oil if needed· every 1 wkmoderate evidence — extension confidence

    If thrips are damaging growing points or fruit, spinosad or insecticidal soap/oil can help per the label; rotate modes of action and avoid spraying open blooms to protect pollinators and natural enemies.

    Always follow the product label — it is the law.

    Source: UC IPM; UF/IFAS

Tomato hornworm

Pestmoderate

Symptoms: large green caterpillars with a tail horn; whole leaves and stem tips stripped overnight; dark frass pellets

  • CulturalHand-pick (leave parasitized ones)· every 2 days · ~3 wksstrong evidence — extension confidence

    Pick hornworms by hand at dusk. If one is covered in white rice-like cocoons, leave it - those are beneficial parasitic wasps doing your work.

    Source: UMN Extension

  • OrganicBt - label use only· every 1 wk · ~2 wksmoderate evidence — extension confidence

    For heavy infestations, Bt kurstaki per label targets the caterpillars.

    Always follow the product label — it is the law.

    Source: UMN Extension

Whiteflies

Pestmoderate

Symptoms: clouds of tiny white insects fly up when plants are disturbed; yellowing stippled leaves; sticky honeydew and black sooty mold; weak stunted growth

  • CulturalRemove infested leaves and hose off· every 4 daysmoderate evidence — extension confidence

    Pick off and discard heavily infested lower leaves and rinse colonies off undersides with a strong spray of water; yellow sticky cards help monitor numbers.

    Source: UC IPM: Whiteflies

  • OrganicApply a labeled soap or oil· every 1 wk · ~3 wksmoderate evidence — extension confidence

    Apply a labeled insecticidal soap or neem oil per the label, covering leaf undersides; these reduce but won't eliminate whiteflies, so repeat as needed.

    Always follow the product label — it is the law.

    Source: UC IPM: Whiteflies

Cutworms

Pestmoderate

Unusual this time of year.

Symptoms: seedlings cut off at soil line; transplants toppled overnight; wilted clipped plants in a row; chewed stems near ground; gray-brown caterpillars curled in soil

  • CulturalPlace stem collars on transplantsstrong evidence — extension confidence

    Push a collar (cardboard tube, can, or cup with bottom removed) a couple inches into the soil around each stem so it extends a few inches above ground; this blocks cutworms from reaching the stem.

    Source: UMN Extension: Cutworms; UC IPM: Cutworms

  • CulturalScout soil and hand-remove· every 3 days · ~2 wksstrong evidence — extension confidence

    In the evening or early morning, check the soil around damaged plants and remove curled larvae by hand; tilling beds about two weeks before planting also reduces larvae and pupae.

    Source: UMN Extension: Cutworms; UC IPM: Cutworms

  • OrganicApply a labeled Bt or spinosad· every 1 wk · ~3 wksmoderate evidence — extension confidence

    If damage continues, apply a labeled Bacillus thuringiensis (kurstaki) or spinosad product per the label, targeting small larvae; Bt works best on young first- and second-instar cutworms.

    Always follow the product label — it is the law.

    Source: UC IPM: Cutworms

Phosphorus deficiency

Deficiencymoderate

Unusual this time of year.

Symptoms: stunted plants with dark dull green leaves; reddish or purplish tint on leaves and undersides; delayed maturity and poor fruiting; symptoms worst in cold spring soils; older leaves affected first

  • CulturalCheck soil test and soil temperaturestrong evidence — extension confidence

    Purpling in cold spring soils is often temporary, since cold roots can't take up phosphorus that's actually present; warm weather usually resolves it, so confirm a true shortage with a soil test before adding phosphorus.

    Source: UMN Extension; Missouri Botanical Garden

  • OrganicAdd phosphorus only if the test calls for itmoderate evidence — extension confidence

    If low phosphorus is confirmed, work a phosphorus source into the root zone per the test recommendation, and keep soil pH in range since extreme pH ties up phosphorus.

    Always follow the product label — it is the law.

    Source: UMN Extension

Aphids

Pestlow

Symptoms: clusters of tiny soft-bodied insects on new growth and undersides; sticky honeydew or sooty mold; curled distorted new leaves; ants tending them

  • CulturalBlast off with water· every 3 days · ~2 wksstrong evidence — extension confidence

    Knock colonies off with a strong jet of water in the morning; repeat every few days. Light infestations rarely need more.

    Source: UC IPM: Aphids

  • OrganicInsecticidal soap - label use only· every 1 wk · ~3 wksmoderate evidence — extension confidence

    For persistent colonies apply insecticidal soap to undersides per label. Avoid open flowers.

    Always follow the product label — it is the law.

    Source: UC IPM

Edema (oedema)

Disorderlow

Symptoms: small watery blisters or bumps on leaf undersides; corky tan or brown scabby spots on leaves and stems; yellow flecking on upper leaf surface; worse in cool cloudy humid spells; not spreading plant to plant

Magnesium deficiency

Deficiencylow

Symptoms: yellowing between the veins of older leaves; veins stay green (interveinal); common in sandy soils and containers

  • CulturalConfirm with a soil test, then correct· every 2 wks · ~4 wksmoderate evidence — extension confidence

    Interveinal yellowing on older leaves suggests magnesium. Confirm with a test; if low, a dilute Epsom-salt foliar spray is a short-term fix while you amend the soil.

    Source: UMN Extension

Read: diagnosing leaf spots & yellowing

Nitrogen deficiency

Deficiencylow

Symptoms: oldest leaves uniformly pale yellow; plant pale and slow overall; common in containers and after heavy rain

  • CulturalFeed with balanced fertilizer· every 2 wks · ~4 wksstrong evidence — extension confidence

    Apply a balanced organic fertilizer or fish emulsion; new growth greens up within ~2 weeks. Don't overcorrect.

    Source: UMass Extension

Read: diagnosing leaf spots & yellowing

Sunscald

Disorderlow

Symptoms: pale leathery patch on the sun-exposed shoulder of fruit; follows heavy pruning or leaf loss

  • CulturalKeep canopy coverstrong evidence — extension confidence

    Stop over-pruning and let foliage shade the fruit; shade cloth helps in heat waves. Damaged fruit is still edible if you cut out the patch.

    Source: UMN Extension

Transplant shock

Disorderlow

Unusual this time of year.

Symptoms: wilting or drooping right after transplanting; stalled growth for days after setting out; leaf scorch or edge browning on new transplants; temporary yellowing; recovery once roots establish

  • CulturalWater in well and provide shade· every 1 days · ~1 wksstrong evidence — extension confidence

    Water transplants in thoroughly at planting and keep the root zone evenly moist for the first week or two, and provide temporary shade during hot, sunny, or windy spells to reduce stress while roots establish.

    Source: UMN Extension; Missouri Botanical Garden

  • CulturalHarden off and plant gently next timestrong evidence — extension confidence

    Most plants recover on their own; to prevent recurrence, harden off seedlings before planting, set them out in mild weather or evening, and avoid disturbing the roots when transplanting.

    Source: UMN Extension