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To grow slow bolt cilantro, you need to understand what triggers bolting and choose the right varieties.
Slow bolt cilantro is simply cilantro that has been bred to resist going to seed quickly in warm weather.
If you’ve struggled with cilantro that bolts before you get a decent harvest, growing slow bolt cilantro is the answer.
In this post, we’ll explore how to grow slow bolt cilantro successfully, from selecting seeds to harvesting leaves and seeds.
Let’s dig in.
How to Grow Slow Bolt Cilantro Successfully
Growing slow bolt cilantro starts with understanding why regular cilantro bolts so fast.
Here’s how to keep your slow bolt cilantro productive:
1. Choose the Right Slow Bolt Variety
Not all cilantro is created equal when it comes to heat tolerance.
Look for varieties specifically labeled as slow bolt cilantro or bolt-resistant cilantro.
‘Calypso’ is a popular slow bolt cilantro that stays leafy longer than standard varieties.
‘Santo’ is another slow bolt cilantro worth trying because it’s designed for warmer conditions.
‘Long Standing’ cilantro lives up to its name and gives you more time before flowering.
These slow bolt cilantro varieties have been selected for their ability to delay bolting, giving you a longer harvest window.
2. Time Your Planting for Cooler Weather
Even slow bolt cilantro will bolt eventually when it gets too hot.
The key is to plant slow bolt cilantro when temperatures are mild.
Spring and fall are ideal seasons for growing slow bolt cilantro in most climates.
If you live in a hot region, plant slow bolt cilantro in early spring or late summer.
You can also grow slow bolt cilantro in partial shade during warmer months.
Afternoon shade can make a big difference in how long your slow bolt cilantro stays productive.
This simple trick helps slow bolt cilantro last weeks longer.
3. Water Consistently
Slow bolt cilantro needs consistent moisture to stay happy.
Dry soil stresses the plant and triggers bolting faster.
Water your slow bolt cilantro regularly, keeping the soil evenly moist but not soggy.
A layer of mulch helps retain moisture and keeps the soil cool.
Cool soil means your slow bolt cilantro is less likely to bolt prematurely.
Aim for about an inch of water per week for healthy slow bolt cilantro.
4. Avoid Overcrowding
Slow bolt cilantro needs room to breathe.
When plants are crowded, they compete for water and nutrients, which causes stress.
Stressed slow bolt cilantro bolts faster than plants with adequate space.
Thin your seedlings so they’re about 6 to 8 inches apart.
This gives each slow bolt cilantro plant enough room to grow strong and stay leafy.
5. Harvest Regularly
The more you harvest slow bolt cilantro, the longer it stays in the leafy stage.
Snip the outer leaves first and let the inner ones continue growing.
Regular harvesting signals the slow bolt cilantro plant to keep producing foliage instead of flowers.
Never take more than a third of the plant at once.
This keeps your slow bolt cilantro healthy and productive for weeks.
Tips for Extending Your Slow Bolt Cilantro Harvest
Even with the best slow bolt cilantro, bolting will happen eventually.
Here are extra tips to stretch your harvest even further:
1. Succession Plant Slow Bolt Cilantro Every Few Weeks
Don’t plant all your slow bolt cilantro at once.
Sow small batches every two to three weeks.
This ensures you always have fresh slow bolt cilantro coming up as older plants bolt.
Succession planting is the secret to a continuous slow bolt cilantro supply.
2. Use Shade Cloth in Hot Weather
When temperatures climb, shade cloth can save your slow bolt cilantro.
A 30% to 40% shade cloth reduces heat stress and delays bolting.
Your slow bolt cilantro will thank you with tender leaves instead of tough stems.
3. Pinch Off Flower Buds
If you see flower buds forming on your slow bolt cilantro, pinch them off.
This redirects the plant’s energy back into leaf production.
You won’t stop bolting forever, but you can delay it by a week or two.
Every extra day of slow bolt cilantro harvest counts.
4. Let Some Slow Bolt Cilantro Go to Seed
Cilantro seeds, also called coriander, are a bonus harvest.
Let a few slow bolt cilantro plants flower and produce seeds.
Harvest the seeds when they turn brown and use them in cooking.
You can also save slow bolt cilantro seeds for replanting next season.
This makes growing slow bolt cilantro even more rewarding.
Common Mistakes When Growing Slow Bolt Cilantro
Even experienced gardeners make mistakes with slow bolt cilantro.
Here are pitfalls to avoid:
1. Planting Too Late in Spring
If you plant slow bolt cilantro too late, summer heat will catch up fast.
Start early so your slow bolt cilantro has time to establish before temperatures rise.
2. Letting Soil Dry Out Completely
Slow bolt cilantro hates drought stress.
One good drying out can trigger bolting almost overnight.
Stay on top of watering, especially in containers.
3. Using Too Much Nitrogen Fertilizer
Too much nitrogen makes slow bolt cilantro grow fast and weak.
Weak growth bolts quickly and produces fewer flavorful leaves.
Use a balanced fertilizer sparingly, or skip it if your soil is already rich.
So, How Do You Grow Slow Bolt Cilantro?
To grow slow bolt cilantro, choose bolt-resistant varieties, plant in cool weather, water consistently, and harvest often.
Slow bolt cilantro isn’t completely bolt-proof, but with the right care, you’ll get a much longer harvest than standard cilantro.
Remember to plant slow bolt cilantro in succession, provide shade when it’s hot, and pinch off flower buds as they appear.
With these tips, growing slow bolt cilantro becomes easy and rewarding.
You’ll enjoy fresh leaves for weeks and maybe even harvest coriander seeds too.
Give slow bolt cilantro a try, and you’ll never go back to regular cilantro again.