Swiss Chard Microgreens
Swiss Chard Microgreens is a microgreen in the Amaranthaceae family. It grows best in full sun to part shade with medium moisture, and is listed for USDA zones 2-13. Plants reach harvest about 8–21 days after planting and sit about 4 inches apart.
Varieties
3 from True Leaf Market · sorted by days to maturity▸Barese Dark Green Smooth Leaf8–12 days
Heirloom
Barese Dark Green Smooth Leaf Swiss Chard Microgreens Seeds.Non-GMO, heirloom seeds. Beta vulgaris ssp. cicla. Barese Swiss Chard is commonly grown for baby greens. The leaves are bright green with a slight spinach taste.
View on True Leaf Market ↗▸Rainbow Mixture8–12 days
Heirloom
8-12 days. Amazing colors and pleasant flavor make these greens a great choice to add highlights to any microgreen salad. This is the best and most inexpensive choice as a substitute for beets.
View on True Leaf Market ↗▸Ruby Red11–21 days
Heirloom
11-21 days. A mild delicate spinach flavor and amazing red stem color. Makes an excellent choice to add to any micro mix for earthy flavor and striking color.
View on True Leaf Market ↗
Plant spacing
In a square-foot bed, space swiss chard microgreens about 4 in apart — that fits 9 plants in each 1-foot square (3×3). Wider rows or containers space the same.
Plan your swiss chard microgreens planting
Add swiss chard microgreens 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
Storing & preserving
Stores well in the right conditions. Refrigerate in a bag with a paper towel; best within a week.
- Freeze: Cooking greens freeze after blanching; salad greens don't.
General home-preservation guidance — for tested processing times and safety, follow the National Center for Home Food Preservation.
Growing timeline
Companion planting — with cited sources
From US/Canada cooperative-extension publications and peer-reviewed studies. Evidence-tier dots show how strongly each recommendation is backed: ●●● peer-reviewed mechanism · ●● extension consensus · ● traditional knowledge with a plausible mechanism.
Pairs well with (3)
- Common CabbageEvidence tier C: Traditional practice with plausible mechanism but limited empirical replicationsoil-conditioning
Beets are commonly recommended near brassicas; both are moderate to heavy feeders in similar fertility windows and beet leaves return potassium-rich residues.
Source: University of Maryland Extension
- Common LettuceEvidence tier C: Traditional practice with plausible mechanism but limited empirical replicationshade-shelter
Beets and lettuce share cool-season cultural needs and occupy different vertical layers (root vs. low canopy), making them efficient bed partners; no documented pest mechanism.
Source: University of Maryland Extension
- Common OnionEvidence tier C: Traditional practice with plausible mechanism but limited empirical replicationpest-deter
Onion and beet are traditional bedfellows in extension home-garden guides; onion volatiles plausibly mask beet from leafminer flies, though direct trials are limited. Spatial use of bed is the main practical benefit.
Source: S1, University of Maryland Extension
Avoid planting near (2)
- Common SpinachEvidence tier B: Extension consensus across multiple US/Canada land-grant institutionsdisease-host, alternate-host-pest
Beet and spinach share the spinach/beet leafminer (Pegomya hyoscyami) and Cercospora leaf spot. Avoid sequential plantings or interplant with caution.
Source: S1, University of Maryland Extension
- QuinoaEvidence tier B: Extension consensus across multiple US/Canada land-grant institutionsalternate-host-pest, disease-host
Quinoa and beet share leafminer flies and several fungal leaf diseases; rotating or separating these chenopod crops is recommended.
Source: S22, Agriculture and Agri-Food Canada
Sources cited
- S1
- Cornell University Cooperative Extension — vegetable production guides
- S22
- University of Saskatchewan / Saskatchewan Ministry of Agriculture
- S25
- Agriculture and Agri-Food Canada
- S9
- University of Maryland Extension — Home & Garden Info Center
Care & troubleshooting— extension-sourced, with citations
When to feed, prune & water
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.
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.
- 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.
Protect the garden from rabbits and voles
Protection- Routine careFence out rabbitsstrong evidence — extension confidence
Surround beds with 1-inch mesh chicken wire at least 2 feet tall with the bottom buried or staked down a few inches so rabbits can't push under it.
- Routine careReduce vole habitat and guard stemsstrong evidence — extension confidence
Keep grass and mulch pulled back from plant bases and crowns to remove vole cover, mow surrounding vegetation, and use hardware-cloth guards around vulnerable woody stems before winter.
Thin beet-family seedlings
Thinning- Routine careThin clusters to one plant each· every 2 wks · ~2 wksstrong evidence — extension confidence
Beet/chard 'seeds' are clusters, so several sprout together. Thin to one strong seedling every 3-4 in; the thinnings are edible greens.
Clean up debris and sanitize at season end
SanitationUnusual 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.
- 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.
Something looks wrong?
Describe what you see on your swiss chard microgreensand we'll rank the likely causes — most likely first, least-invasive fix first.
Blister beetles
Pestmoderate- 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.
- 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.
Cercospora leaf spot on beet and chard
Diseasemoderate- CulturalRotate, space out, and water at the basestrong evidence — extension confidence
The fungus survives on debris and spreads by splashing water, so rotate beds, space plants for airflow, and water at the soil rather than overhead. Remove and discard heavily spotted outer leaves and clear crop residue after harvest.
- OrganicApply a copper fungicide if spreading· every 10 daysmoderate evidence — extension confidence
If spotting is severe and weather stays warm and humid, apply a labeled copper fungicide preventively per the label, before the disease takes over the planting.
Japanese beetles
Pestmoderate- CulturalHandpick into soapy water· every 1 days · ~4 wksstrong evidence — extension confidence
In early morning when beetles are sluggish, knock them into a bucket of soapy water; daily removal also reduces the scent that draws in more beetles. Skip the lure traps, which tend to attract more beetles than they catch.
- CulturalCover plants past bloommoderate evidence — extension confidence
On crops that have finished flowering and set fruit, drape a row cover or netting to keep beetles off without blocking pollination during bloom.
Potassium deficiency
Deficiencymoderate- 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.
- 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.
Slugs & snails
Pestmoderate- CulturalTrap, hand-pick at night, reduce cover· every 2 days · ~3 wksstrong evidence — extension confidence
Pick at night with a flashlight, set shallow beer traps, water in the morning so soil dries by dusk, and clear damp hiding spots.
- OrganicIron-phosphate bait - label use only· every 1 wk · ~3 wksmoderate evidence — extension confidence
Scatter a labeled iron-phosphate slug bait sparingly per the label; it's pet- and wildlife-safer than metaldehyde.
Wireworms
PestmoderateUnusual this time of year.
- CulturalRotate away from grassy groundstrong evidence — extension confidence
Avoid planting susceptible crops right after sod, pasture, or grass cover, where wireworms build up; rotate to a less-favored crop and let infested beds dry out between plantings.
- CulturalBait-trap to monitor· every 5 days · ~3 wksmoderate evidence — extension confidence
Bury pieces of carrot or potato or a handful of soaked wheat seed as bait when soil reaches about 50F, check after several days, and remove the worms you find to gauge and reduce pressure.
Aphids
Pestlow- 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.
- 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.
Bolting (premature flowering)
Disorderlow- CulturalShade and harvest before boltingstrong evidence — extension confidence
Once a plant bolts it can't be reversed, so harvest at the first sign of stalk formation; 30-50% shade cloth and steady watering during heat help delay bolting in cool-season crops.
- CulturalUse bolt-resistant varieties and succession sowmoderate evidence — extension confidence
Choose heat-tolerant, slow-bolt varieties and stagger small sowings so a heat spell doesn't take out the whole planting.
Leaf miners
Pestlow- CulturalPick mined leaves + row cover· every 5 days · ~3 wksmoderate evidence — extension confidence
Remove and bag leaves with tunnels, and cover plants with insect netting to block the egg-laying flies. Damage is mostly cosmetic on leafy crops.