When To Plant Coriander

The best time to plant coriander is during the cooler months of spring or fall, as this herb thrives in temperatures between 50°F and 70°F.
 
If you’ve been wondering when to plant coriander to get the most flavorful leaves, the answer really comes down to avoiding the heat.
 
You see, coriander is a cool-season annual that absolutely hates hot weather, so timing your planting when to plant coriander correctly is the secret to a lush, leafy harvest.
 
In this post, we’ll walk you through the best windows for planting coriander, how to get the timing right no matter where you live, and the common mistakes that ruin a coriander patch.
 
Let’s dig into the details so you can grow this zesty herb with total confidence.
 

When To Plant Coriander Based On Your Climate

When to plant coriander depends heavily on your local climate, but the general rule is to sow seeds when the soil is cool and the days are short.
 
Coriander bolts, meaning it shoots up flowers and goes to seed, as soon as temperatures climb above 75°F.
 
So your job is to time your planting coriander so it matures before the summer heat arrives.
 

1. Spring Planting For Mild Climates

If you live in a region with mild springs, the best time to plant coriander is two to three weeks before your last expected frost date.
 
This gives the seeds a chance to germinate in cool, moist soil, which they love.
 
You can plant coriander directly outdoors as soon as the ground is workable in early spring.
 
The seedlings will tolerate a light frost, so you don’t need to wait for the danger to fully pass.
 
This early sowing means you’ll be harvesting leaves well before the heat triggers bolting.
 

2. Fall Planting For Warm Climates

For gardeners in warmer zones, the best time to plant coriander is actually in late summer or early fall.
 
When you plant coriander in August or September, the soil is still warm enough for germination, but the air temperatures are starting to drop.
 
This tricks the plant into thinking it’s spring, so it produces plenty of leafy growth instead of racing to flower.
 
You can even plant coriander in succession every two to three weeks through the fall for a continuous harvest.
 

3. Winter Planting For Mild Winters

If you live in a place with very mild winters, like zone 8 or warmer, you can plant coriander throughout the winter months.
 
The key is to sow seeds when daytime highs stay below 70°F, which might mean planting in November or December.
 
Coriander will grow slowly during the cooler months, giving you tender leaves for months on end.
 
Just make sure your soil drains well so the roots don’t rot in wet winter weather.
 
Knowing when to plant coriander for your specific zone is the single most important step you can take.
 

How To Get The Perfect Timing For Planting Coriander

You can fine-tune when to plant coriander by paying attention to soil temperature and daylight hours.
 
This herb is very sensitive to its environment, so a little observation goes a long way.
 

1. Check The Soil Temperature

Coriander seeds germinate best when the soil temperature is between 55°F and 68°F.
 
You can use a simple soil thermometer to check, or you can just feel the soil with your hand.
 
If the soil feels cool but not cold, that’s your cue to plant coriander.
 
Sowing when the soil is too warm will lead to poor germination and weak seedlings.
 
So if you’re asking when to plant coriander, the soil thermometer is your best friend.
 

2. Watch The Daylight Hours

Coriander is a long-day plant when it comes to flowering, meaning it bolts when days get longer than 12 hours.
 
So the best time to plant coriander is when the days are still getting shorter or are relatively short.
 
In spring, that means planting as early as possible before the summer solstice.
 
In fall, it means planting after the summer solstice when the days are naturally getting shorter.
 
This is why fall planting often produces even better results than spring for many gardeners.
 
When you plant coriander at the right day length, the plant focuses on leaf production.
 

3. Use Succession Planting for A Steady Supply

Instead of planting all your coriander seeds at once, you can stagger your planting coriander every two weeks.
 
This ensures you always have tender young leaves ready to pick.
 
If you plant coriander in early spring, then again in mid-spring, and then again in late summer, you’ll have a near-constant harvest.
 
This is the best way to extend your season without fighting the heat.
 
You’ll never wonder when to plant coriander again because you’ll already have it in the ground.
 

Common Mistakes To Avoid With Coriander Timing

Even with perfect timing, a few common mistakes can ruin your coriander crop.
 
Avoid these pitfalls so your hard work pays off with a bounty of fresh leaves.
 

1. Planting Too Late In Spring

If you wait until late spring or early summer to plant coriander, you’re setting yourself up for failure.
 
The heat will arrive quickly, and your coriander will bolt within a week of sprouting.
 
This is the most common mistake when it comes to when to plant coriander.
 
Always err on the side of planting earlier rather than later in the spring.
 

2. Sowing Seeds Too Deep

Coriander seeds need light to germinate, so they should only be lightly pressed into the soil surface.
 
If you bury them half an inch deep, they may never sprout.
 
When you plant coriander, just scatter the seeds and cover them with a very thin layer of soil.
 
You can even leave them on top and gently rake them in.
 

3. Letting The Soil Dry Out

Coriander roots are shallow, so they need consistent moisture.
 
If the soil dries out completely, the plant will stress and bolt prematurely.
 
Water regularly, especially during the first few weeks after planting coriander.
 
Mulching around the plants can help retain moisture and keep soil temperatures cool.
 

So, When To Plant Coriander?

The best time to plant coriander is in the cool days of early spring or as the heat fades in late summer and fall.
 
You can plant coriander successfully in most climates by following the soil temperature and day length cues.
 
Remember that coriander hates heat, so your goal is always to avoid the warm summer months.
 
Whether you’re a beginner or a seasoned gardener, nailing the timing for planting coriander will reward you with a generous harvest.
 
So get your seeds ready, watch the weather, and plant coriander at the perfect moment for your garden.
 
Now you know exactly when to plant coriander, so go ahead and enjoy this delicious and fragrant herb.