How to Grow Cilantro: Work With the Bolt, Not Against It

GardenDraft Team · May 9, 2026 · Updated August 1, 2026 · 8 min read

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

Cilantro is the herb people most often think they're failing at, when really they're just fighting its nature. It bolts (shoots up a flower stalk and stops making leaves) fast, especially in heat. Once you stop treating that as a problem to prevent and start planning around it, cilantro becomes one of the easiest things in the garden: cheap, quick, and happy to reseed itself for free.

Grow cilantro cool, not warm

Cilantro is a cool-season crop, full stop. It does its best leafy growth in the mild weather of spring and fall, and the long days and heat of summer are exactly what trigger it to bolt. So sow it early in spring as soon as the soil can be worked, and again in late summer for a fall flush — not in the heat of June and July, when it will flower before you've cut much. In mild-winter regions it will grow happily right through the cool months. Give it full sun in spring and fall, but a spot with afternoon shade buys you a little more leaf time as things warm up.

The exact windows

The catalog window for cilantro opens one to three weeks before your last spring frost — seedlings take frost easily, and established plants tolerate to around 24°F. From that first sowing, repeat every two weeks (the catalog's default succession interval is 14 days) until early summer heat makes it pointless. Start again in late summer: the fall window runs from about eight weeks before your first frost right up to three or four weeks before it, and fall plants stand far longer than spring ones because the days are shortening instead of lengthening. In mild-winter climates, a fall sowing under a row cover or low tunnel yields cilantro all winter — the season most gardeners never think to use. Expect first cutting roughly 45 to 55 days from sowing, sooner for baby leaves. Your dates are on the planting calendar.

One more timing note: seed sown into genuinely hot soil often just sits there, dormant, until conditions cool — so a failed July sowing sometimes "magically" sprouts in September. It wasn't dead; it was waiting.

Direct-sow and succession-sow

Cilantro has a taproot and resents being transplanted, so direct-sow it where it will grow, about a quarter to half an inch deep. The seed you plant is actually coriander — each round "seed" holds two, so thin seedlings to a few inches apart once they're up. Because any single sowing bolts within a few weeks, the trick to a steady supply is succession planting: scatter a fresh short row every two to three weeks rather than one big patch you can't keep up with. A pinch every couple of weeks keeps the kitchen stocked far better than a single spring planting ever will.

For full plants, the square-foot value is a 6-inch grid, four per square (spacing guide), but for kitchen supply most growers sow a dense band and cut it young like a baby green instead — an inch or two between plants, sheared and resown. Cracking the round husks gently before sowing and soaking them overnight speeds the notoriously leisurely germination, which otherwise takes one to three weeks.

Ordinary soil, steady water

Cilantro asks for very little below ground: reasonably fertile, well-drained soil with a bit of compost is ideal, and heavy feeding actually works against you, producing lank growth with less aroma. What matters is steady moisture — dry spells are a bolt trigger on top of everything else, so water before the bed dries out, and mulch lightly in warm spells. The pest list is mercifully short: aphids occasionally colonize new growth (hose them off), damping off can thin cold wet sowings, and slugs will graze seedlings in damp corners. Nothing else troubles it often enough to plan for.

When it bolts, lean in

Bolting is just the plant doing what it's built to do when summer heat arrives. When a plant sends up its lacy flower stalk, you have three good options, and you can take all of them: let some flowers open to feed hoverflies and other beneficial insects, let the flowers dry into coriander seed to harvest for the spice rack, and let a few heads drop where they stand so the patch self-sows a free fall crop. If you want to delay bolting at the margins, keep plants evenly watered and reach for a slow-bolt variety bred for heat tolerance. (And if what you actually want is cilantro flavor in August, look up culantro — a different, heat-loving plant with the same flavor compounds, grown as a summer stand-in where cilantro won't cooperate.)

Harvesting coriander is worth doing deliberately once: cut whole heads when the seeds have turned from green to tan, hang them upside down in a paper bag for a week, and shake. The seed is a genuine two-for-one — spice jar and next season's planting stock — and home-saved coriander germinates enthusiastically (seed saving basics). Green, unripe coriander seed is its own reward too, with a bright citrus snap chefs pay for.

Harvest from the outside

Pick the outer, mature leaves first and let the center keep growing, cutting no more than about a third of the plant at once. The flat, broad young leaves are the ones you want for cooking; the ferny, divided leaves that appear as the plant prepares to bolt are milder and a sign the clock is running out. Cilantro pairs naturally in the bed and the kitchen with tomatoes and peppers.

Cilantro barely stores — it wilts fast and loses its perfume dried, so treat it like cut flowers: stems in a jar of water in the fridge, loosely bagged, used within the week. For real preservation, whiz leaves with a little oil and freeze in cubes — the flavor survives freezing far better than it survives the dehydrator, which strips cilantro of nearly everything worth keeping.

Cilantro in a pot

Containers suit cilantro's short life well, with one condition: depth for the taproot. Choose a pot at least 8 inches deep, sow directly into it (never transplant starts into a pot — they bolt within days), keep it evenly moist, and resow a new corner every two weeks. In summer, a container's mobility is the advantage the garden bed lacks: move it to afternoon shade and you'll squeeze extra weeks of leaf out of the hot months. A deep window box run this way, plus a fall patch in the garden, covers salsa season end to end. Dial in your spring and fall sowing windows on the planting calendar.