Coriandrum sativum
Cilantro
Spring & Fall & Winter7–14 days to 30–45 days to harvestPartial SunContainer friendly
Cilantro prefers cool weather and grows quickly. Sow a little every few weeks because heat can make it bolt.
Cilantro begins as soft leafy growth; harvest outer stems before the plant races into flower.
SpringFallWinter
01 / Plant at a Glance
The quick read
Start here when you want the useful facts without digging through the whole notebook.
Sources for glance facts
- NC State Extension Plant Toolbox, Cilantro - Coriandrum sativumUsed for cilantro family, life cycle, native range, edible plant parts, height, flowers, and bolting guidance.
02 / Quick-start care
The 30-second version
Cilantro prefers cool weather and grows quickly. Sow a little every few weeks because heat can make it bolt.
Cool-season crops often appreciate gentler afternoon light.
Check the soil before reacting to wilting or yellow leaves.
Loose, draining soil prevents many beginner problems.
7–14 days to germinate. Weather and variety can stretch this.
Use a pot with drainage and room for roots.
Morning sun is plentyDirect sow when possibleKeep young plants moistSow again every 2–3 weeks
03 / Overview
A friendly first look
Cilantro prefers cool weather and grows quickly. Sow a little every few weeks because heat can make it bolt.
Gardens do not run on exact clocks. The timing here is a useful estimate; weather, temperature, and variety all get a vote.
04 / What it looks like
Field marks for beginners
Use the photos as backup, not the only evidence. These notes describe what to look for in plain language.
Lower leaves
Young lower leaves are broader and parsley-like, which is why new gardeners sometimes confuse cilantro with flat-leaf parsley at first glance.
Upper leaves
As the plant stretches, upper leaves become finer and more fernlike. That change often arrives as the plant prepares to flower.
Flowers and seed
White to pink flowers form small umbels above the foliage. After flowering, the yellow-brown seed pods can mature into coriander seed.
Sources for this section
- NC State Extension Plant Toolbox, Cilantro - Coriandrum sativumUsed for cilantro family, life cycle, native range, edible plant parts, height, flowers, and bolting guidance.
05 / Mature size & spacing
How much room to give it
Mature size changes with variety, weather, soil, container volume, and care, so treat these as practical planning notes.
Mature size
Plan for a plant that can reach about 1-2 feet tall and wide if allowed to flower, even though leaf harvest usually begins much earlier.
Succession sowing
Because cilantro moves quickly toward flowering in heat, sowing a small patch every few weeks is more reliable than expecting one plant to carry the whole season.
Sources for this section
- NC State Extension Plant Toolbox, Cilantro - Coriandrum sativumUsed for cilantro family, life cycle, native range, edible plant parts, height, flowers, and bolting guidance.
- Introduction to Horticulture, Revised Fourth Edition Teacher’s Manual (2009), Olericulture—Vegetable Production, pp. 59–61Used for vegetable-growing factors including temperature, light, water, and soil.
06 / Photo journal
Look closer at Cilantro
These images are here as field notes: leaves, flowers, fruit, and growth habits you can compare with the plant in front of you.
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07 / Origin & background
Where it comes from
Brief, source-backed background for context without turning the plant into trivia.
Two pantry names on one quick annual
Cilantro is the leafy stage of Coriandrum sativum, while coriander usually refers to the mature seed. NC State Extension lists it as a cool-season annual with origins in the western Mediterranean, southern Europe, and western Asia.
Sources for origin note
- NC State Extension Plant Toolbox, Cilantro - Coriandrum sativumUsed for cilantro family, life cycle, native range, edible plant parts, height, flowers, and bolting guidance.
08 / When to plant
Give it the right kind of day
Cilantro does best in Spring and Fall and Winter. Cool soil and mild days help this crop settle in. Check your local before deciding on a week.
SunPartial SunWaterKeep evenly moist while young, then water when the surface dries.SoilLoose soil with good drainage.
09 / Growth timeline
From seed to supper
1
Seed
Day 0Start with fresh seed.
2
Germination
7–14 daysKeep the soil gently moist.
3
Sprout
1–2 weeksThe first leaves appear.
4
Seedling
2–4 weeksTrue leaves begin growing.
5
Mature plant
VariesGrowth becomes fuller and stronger.
6
Harvest
30–45 daysLook for the crop-specific signs below.
10 / Ready to harvest
How to know it’s ready
- Plants are about 6 inches tall
- Leaves are bright and feathery
- Stems are tender
- Flower stalk has not formed
11 / How to harvest
A gentle, simple harvest
- 1
Snip outer stems near the soil.
- 2
Leave the center to keep growing.
- 3
Harvest in the cool morning for crisp leaves.
12 / Varieties & types
Different ways this plant shows up
These cards separate true cultivars, species, and everyday type labels when the source supports that distinction.
Leaf cilantro
The stage grown for tender leaves and stems before the plant sends up a strong flower stalk.
- Appearance
- Broad lower leaves shifting toward finer upper leaves as the plant ages.
- Best use
- Fresh leaves for salsas, sauces, and garnishes
Container friendlyBeginner friendly
Coriander seed stage
The same plant after flowering and seed development; the mature seeds are used as coriander.
- Appearance
- Round yellow-brown seed pods after flower umbels fade.
- Best use
- Dry seed spice
Flowering cilantro
A bolted plant is usually less useful for leafy harvest, but the flowers can support beneficial insects and lead to seed.
- Appearance
- Fine upper foliage and pale umbels held above the plant.
Sources for variety notes
- NC State Extension Plant Toolbox, Cilantro - Coriandrum sativumUsed for cilantro family, life cycle, native range, edible plant parts, height, flowers, and bolting guidance.
13 / Beginner mistakes
Small course corrections
Planting in hot weather
Notice it early, adjust gently, and keep going. Plants are excellent teachers.
Disturbing the taproot
Notice it early, adjust gently, and keep going. Plants are excellent teachers.
Waiting too long to harvest
Notice it early, adjust gently, and keep going. Plants are excellent teachers.
14 / Care notes
Your steady-care checklist
- Morning sun is plenty
- Direct sow when possible
- Keep young plants moist
- Sow again every 2–3 weeks
Use this checklist after the quick-start section when you are deciding what to adjust next.
Common problems, symptom-first
A symptom is a clue, not a verdict. Start with the easy observations, change one thing at a time, and research further when the pattern is persistent or spreading.
Tall flower stalksThe center shoots upward and leaves become finer before white or pink flower umbels appear.
Possible causes
- Hot weather
- Plant age
- Longer days or stress
Check first
Check the recent temperature pattern and whether the plant has shifted from broad lower leaves to fine upper leaves.
Next step
Harvest usable leaves now, sow a new small patch, or let this plant flower for seed and insects.
Research more when
Young seedlings bolt immediately despite cool conditions, which may point to transplant shock or repeated drying.
Wilting leavesLeaves sag in afternoon heat or remain limp even after the sun drops.
Possible causes
- Dry soil
- Hot afternoon exposure
- Soggy roots after overwatering
Check first
Feel soil moisture before watering; wilt can mean too dry or too wet.
Next step
Water gently if dry, add light afternoon shade in warm weather, and avoid disturbing the taproot.
Research more when
Wilt persists in evenly moist soil or stems darken near the soil line.
Sources for troubleshooting notes
- NC State Extension Plant Toolbox, Cilantro - Coriandrum sativumUsed for cilantro family, life cycle, native range, edible plant parts, height, flowers, and bolting guidance.
- Introduction to Horticulture, Revised Fourth Edition Teacher’s Manual (2009), Olericulture—Vegetable Production, pp. 59–61Used for vegetable-growing factors including temperature, light, water, and soil.
- Introduction to Horticulture, Revised Fourth Edition Teacher’s Manual (2009), Irrigation Systems, pp. 71–72Used for plant water use and soil-moisture checks.
15 / Fun facts
Small things worth remembering
A few strong facts beat a compost heap of trivia.
One plant, two names
Cilantro and coriander usually describe different harvest stages of the same species: leaves and stems first, mature seeds later.
A tiny pollinator invitation
NC State Extension notes cilantro can serve as a host plant for swallow-tailed butterflies, so a bolted plant is not automatically wasted space.
Sources for this section
- NC State Extension Plant Toolbox, Cilantro - Coriandrum sativumUsed for cilantro family, life cycle, native range, edible plant parts, height, flowers, and bolting guidance.
16 / Garden journal
What to watch this week
A few beginner-friendly prompts for observing the plant without turning every leaf into a crisis.
What to notice
Write down when leaves shift from broad to fine. That is your local warning that flowering may be close.
Gardener's note
If you love cilantro, sow small amounts often. One heroic planting usually becomes one heroic lesson in bolting.
Common beginner surprise
Bolting is normal, especially in warmth. It means the plant is changing goals from leaf-making to flower-and-seed-making.
Signs it is doing well
Leaves look fresh, stems are tender, and the plant has not yet sent up a tall central flower stalk.
Signs it needs help
Wilting, fast flowering, or yellow lower leaves deserve a soil-moisture and temperature check before any dramatic intervention.
17 / Garden Library
From the Garden Library
These notes synthesize ideas from the source books in Garden Log language. They are meant to help you notice what the plant is asking for, not replace local advice.
drainage · containers
Drainage is root care
Roots need both moisture and air. Soil that stays waterlogged can stress plants even when it looks like you are being generous with water.
Try this: Use containers with drainage holes, choose a loose mix for pots, and wait until the upper soil begins to dry before watering again.
Watch for: A wilting plant can be too dry or too wet. Check the soil before assuming it needs more water.
seed starting · germination
Seeds need moisture, air, and timing
Seed-starting works best when the seedbed stays evenly damp, warm enough for the crop, and airy enough that young roots are not smothered.
Try this: Mist or bottom-water gently until sprouts appear, then move seedlings into bright light quickly so stems stay sturdy.
Watch for: Deep, soggy planting mix can slow germination and invite disease.
site selection · sunlight
The right site prevents half the problems
Matching a plant to its light, moisture, hardiness, and maintenance needs is a quieter form of pest and disease prevention.
Try this: Before planting, ask whether the crop wants heat or coolness, full sun or some shade, and a pot or deeper garden bed.
Watch for: A plant forced into the wrong site may need constant rescue and still underperform.
Book sources for these notes
- Introduction to Horticulture, Revised Fourth Edition Teacher’s Manual (2009), Media, Nutrients, and Fertilizers, pp. 26–27Used for soil texture, growing media, and nutrient guidance.
- The Well-Tended Perennial Garden (2017), Bed Preparation: Insurance for Success, pp. 29–43Used for soil testing, drainage, pH, organic matter, and bed preparation.
- The Well-Tended Perennial Garden (2017), Planting and Renovation, pp. 45–61Used for planting depth, mulch, watering, fertilizing, and weed control.
- Introduction to Horticulture, Revised Fourth Edition Teacher’s Manual (2009), Plant Propagation, pp. 23–25Used for seed-starting and vegetative propagation concepts.
- The Well-Tended Perennial Garden (2017), Design and Its Relationship to Maintenance, pp. 12–27Used for matching plants to site conditions and maintenance expectations.
- Introduction to Horticulture, Revised Fourth Edition Teacher’s Manual (2009), Olericulture—Vegetable Production, pp. 59–61Used for vegetable-growing factors including temperature, light, water, and soil.