Annual Herb · 9 varieties

Cilantro

Coriandrum sativum

Apiaceae — the same plant family as carrot, celery, parsley, parsnip and 5 more here. Relatives share pests and diseases, which is why rotation plans group by family.

Cilantro (Coriandrum sativum) is an annual herb. It wants full sun and pH 6–7 soil, with about 1 in of water weekly. It matures in about 45–80 days from sowing. Watch for leafhoppers and aster yellows. Below: its full sourced profile from 11 extension sources, plus a planting calendar timed to your frost dates.

Sun Full sun
Water Moderate
Matures 45–80 days — from seed from seed
Mature size 1–3 ft
Spacing 2–12 in
Soil pH 6–7
Frost Half hardy
When to plant cilantrotypical · zone 6b
Your zone
…or your ZIP, for your real frost dates

Germinating
Seedlings
Growing
Harvest
Flowering
Ripening

Typical dates for zone 6b — set your zone or ZIP for yours. This calendar assumes the crop is direct sown. Timing is a guide from the crop's sourced growth stages; confirm with your local frost dates and extension before you sow.

Growing cilantroevery fact says where it came from

What we will not put a number on

We do not give a feeding rate for this crop, and that is deliberate rather than a gap. The figures published by extension services are pounds of nitrogen per acre for a production field — they do not convert safely to a raised bed or a pot without knowing your soil test and your fertilizer's analysis, and guessing errs toward burning roots. It is also why every chart you find online disagrees with the next one.

We give watering as a depth per week rather than gallons per plant, because that is how it is actually measured and how the published figures are written. A gallons-per-plant number depends on your spacing, your soil and whether the plant is in a pot — so it would look more precise than it is.

Site & soil

Sun
Full sun
Soil pH
6–7
Soil texture
Loam, Well drained
Frost tolerance
Half hardy

No published figure for the temperature frost starts to hurt it, the temperature that would kill it and a heat limit. We looked — where a number is missing here it is missing from the research, not skipped. The crop’s frost and heat tolerance above still applies.

The plant

Mature height
1–3 ft
Mature spread
1–2 ft
Growth rate
Fastest
Spacing in row
2–12 in
Between rows
12–15 in
Planting depth
0.25–0.5 in
Container size
1–3 gal — low end is the minimum, high end is better
Container depth
4–6 in
Support
Self-supportingest
Grown from
Direct sow

Water & feeding

Water needs
Moderate
Water per week
1 in/wk
Critical water
Germination, Establishmentest
Feeding
Low

Timing & fruiting

Days to maturity
45–80 days from seed
Harvest cues
Rapid leaf growth, Fruit coloring

Planted again for autumn

Sow by
early Sep typical · zone 6b

45 days to maturity from sowing, counted back from the first frost above. Not published for anywhere in particular: it is your own frost date and this crop's own figure, which is why it works wherever you are. A days-to-maturity figure is a catalog number for a good season rather than a promise, and a cold month moves it.

Edible parts per source: leaf, seed, flower, stem, root.

What tends to go wrongmost-cited first
PestsLeafhoppers
DiseasesAster yellowsDamping offBacterial leaf spot

Compiled from the extensions cited below. Which ones actually show up depends on your region — your extension's local list is the last word.

⚠ Reported toxicityverbatim from cited sources

Different parts differ — the edible part is the leaf and seed and flower and stem and root; the notes below flag other parts or preparations.

PetsNon toxic to dogs, Non toxic to cats, Non toxic to horses

Recorded exactly as the source states it — not medical or veterinary advice. If a person or animal may have eaten a toxic part, call Poison Control (1-800-222-1222) or your vet / the ASPCA line (888-426-4435).

All 9 varietiesthe ones with their own page are linked
Variety TypeHabit DaysWhat it is known for
Calypso Leaf 50–55 Johnny's Selected Seeds describes this asslow to run to seed in heat
Confetti Leaf 45–80
Delfino Leaf 45–80
Jantar Leaf 45–80 WorldCrops (UMass Extension / Cornell collaborative) records this asslow to run to seed in heat
Leisure Leaf 45–80 Johnny's Selected Seeds describes this asslow to run to seed in heat
Long Standing Heirloom Leaf 45–80 Botanical Interests describes this asslow to run to seed in heat
Marino Leaf 45–80 Johnny's Selected Seeds describes this asslow to run to seed in heat
Santo Leaf 45–80 Johnny's Selected Seeds describes this asslow to run to seed in heat
Slow Bolt Heirloom Leaf Upright 50–60 True Leaf Market describes this asslow to run to seed in heat
Sources11 cited · 10 organizations
  • ASPCA Animal Poison Control Center
  • Clemson Cooperative Extension (Home & Garden Information Center)
  • NC State Extension
  • New York Botanical Garden (LuEsther T. Mertz Library)
  • UC Master Gardener Program of Sonoma County (UC ANR)
  • University of Illinois Extension
  • University of Maryland Extension
  • University of Wisconsin-Madison Division of Extension
  • Utah State University Extension
  • West Coast Seeds

We compile bare facts from these university-extension and horticultural sources, never copied prose. 17 of the 20 values on this page carry a citation. The rest are marked est; hover one and it says why — either nobody publishes a figure we could point at, or a person set it and attached no source. Figures vary with climate and seed source; confirm with your local extension before you buy.

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