How to Grow Dill: Leaves, Pickling Heads, and Free Volunteers

GardenDraft Team · August 12, 2026 · Updated August 1, 2026 · 8 min read

Part of: Garden Planning Guides · Crop Rotation & Companion Planting Guides · How to Grow Vegetables — Crop Guides A–Z

Dill is the herb that wants to take over, and that's exactly why it's so easy. Sow it once, let a few plants flower and drop seed, and you'll have dill volunteering in that corner of the garden for years. It grows fast, asks for almost nothing, and gives you three harvests from one plant: feathery leaves, edible flowers, and the seed heads that make a jar of pickles taste like dill.

Direct-sow — it hates being moved

Dill grows a deep taproot and resents transplanting, so direct-sow it where it will stay, scattering seed about a quarter inch deep once the soil has warmed in spring. It germinates quickly and grows tall fast (up to two or three feet), so give it a back-of-the-bed spot in full sun, sheltered from strong wind, since the hollow stems can flop. Thin seedlings to about a hand's width apart. It's perfectly happy in a deep container, too, as long as the pot is tall enough for that taproot.

Leaf types and seed types

Dill types split by what you're after. Tall seed types — the classic "bouquet" and "mammoth" kinds of pickle fame — race up to three feet and flower early, maximizing umbrella-sized seed heads; they're the ones to grow if the point is pickles. Leaf (fernleaf) types are the opposite bet: compact, slow to bolt, and bushy, bred to stand at knee height producing feathery foliage for weeks longer before flowering — the best choice for containers and for cooks who want dill weed, not seed. The catalog's spread runs 38 to 70 days to maturity, which in practice means leaf harvest inside six weeks and seed heads by midsummer from a spring sowing. Grow one of each and both jobs are covered.

The sowing window, spring through summer

Dill's catalog window opens in the two weeks before your last frost — seedlings handle a light frost (the plant tolerates to about 32°F), though the soil should have lost its winter chill for good germination, which runs around 60% at best; sow a little thick and thin later. From that first sowing, resow every two weeks (succession planting; the catalog interval is 14 days) into midsummer if leaves are the goal, since every sowing inevitably bolts on its own schedule. A late-summer sowing, six to eight weeks before your first frost, gives a fall flush of foliage that stands in cool weather better than any summer planting. After the first year, the volunteers usually take over the scheduling for you — thin them to the strongest and treat them as free succession sowings that beat anything you'd have timed yourself. Dates are on the planting calendar.

Sow in succession for leaves

Like cilantro, dill moves quickly from leaf to flower, so any single sowing gives you only a few weeks of the ferny "dill weed" foliage before it shifts to flowering. If you cook with the leaves, the answer is succession planting: a fresh short row every few weeks keeps tender foliage coming all season instead of one early rush. Heat and long days push it to bolt faster, which is a feature as much as a flaw, because the flowers and seed are the other half of why you grow it.

Lean soil, light hand

Dill is a low-input plant. Ordinary, well-drained garden soil suits it; rich feeding and heavy compost produce lush, weak, flavor-diluted growth that flops, so skip the fertilizer in any reasonable bed. Water young plants until established, then only in real dry spells — the taproot forages deeper than most herbs. For spacing, plants left to flower for seed want genuine room, about one per 12-inch square in square-foot terms; leaf-harvest sowings can run much denser, a band thinned to a few inches, cut young and resown. The pest list is short and half-charming: aphids sometimes crowd the flower stems (hose them off, or let the hoverflies dill attracts handle it), damping off can thin an overwatered spring sowing, and the famous swallowtail caterpillars eat their share. One placement note: dill and carrots are close relatives — keep mature flowering dill away from the carrot patch, as they can cross-pollinate wild flavors into saved seed, and they share the swallowtail's attention.

Dill in pots and small gardens

A fernleaf type in a pot at least 10 to 12 inches deep (for the taproot) is the practical version for balconies: sow direct into the pot, thin to three or four plants, cut from the top continuously, and start a second pot three weeks later. In small beds, dill earns double duty as a vertical accent — a see-through plant that adds height without stealing light, threading up between lettuce and other low crops. Just place volunteers deliberately in later years; a self-sown dill forest in the carrot row is charming exactly once.

Let dill flower for pickles and pollinators

When dill sends up its wide, yellow umbrella of flowers, don't pull it. Those flower heads and the green seed that follows are what you want for pickling: a whole head dropped into the jar is the classic. The flowers are also a magnet for beneficial insects: hoverflies, lacewings, and parasitic wasps that prey on garden pests, which makes dill a genuinely useful companion plant near cucumbers and other crops. You may also find fat green-and-black swallowtail caterpillars on it — leave them if you can spare a plant; they become beautiful butterflies and rarely do real damage.

Harvest at every stage

Snip the feathery leaves anytime once the plant is several inches tall, taking from the top and outer growth. For pickling, cut whole flower heads as the blooms open or as the seed turns from green to tan. Let the last heads dry fully on the plant and shake the ripe seed into a bag — keep some for the kitchen and scatter the rest right there to seed next year's patch for free.

Storage follows the stage. Fresh dill weed wilts fast: stand stems in water in the fridge and use within days, or freeze chopped leaves in cubes, which keeps far more flavor than drying. Seed, once fully dry, keeps its punch in a jar for a couple of years — and doubles as next spring's planting stock (seed saving guide). If pickling is the plan, note the timing trick: sow a dill row when you plant your cucumbers, and the flower heads and the pickling fruit arrive together in the same July week, which is exactly how the old kitchen gardens ran it. Dial in your sowing dates on the planting calendar.