Cilantro is one of those herbs that inspires passionate opinions - people either love its bright, citrusy flavor or famously can't stand it. But if you're in the love camp and you've struggled to grow it successfully, I have good news: a few simple adjustments can completely transform your results.
Why timing is everything with cilantro
The number one mistake most home gardeners make with ciltantro is planting it at the wrong time of year. Cilantro - also known as coriander - is a cool-weather herb through and through. It thrives in the mild tempuratures of spring and fall, and it actively dislikes summer heat. When tempuratures climb, cilantro shifts its energy away from producing those lush, aromatic leaves and toward flowering and setting seed - a process called bolting. Once it bolts, the leaves turn sparse and the flavor becomes noticeably more bitter.
So if you've tried growing cilantro before and found it went to seed almost immediately, the culprit was almost certainly the season. Try sowing in early spring or early fall instead, and you'll be amazed at the difference.
- Sow When: soil reaches 55 degrees Fahrenheit minimum soil temperature
- Frost Tolerance: 28 degrees Fahrenheit - cover below this
- Sowing Depth: 1/4 inch or surface sow
- Best Seasons: Spring & Fall - avoid summer heat
Get the timing right for sowing
When you're ready to sow, make sure the soil has warmed to at least 55 degrees Fahrenheit. Cilantro is suprisingly cold-hardy once it's established - it can handle a light frost without any trouble. However, if tempuratures are expected to dip to 28 degrees Fahrenheit or below, it's worth covering your plants with a frost cloth to protect them. A hard freeze at those tempuratures can damage or kill them outright.
The seed secret: crush the husk before planting
Here's a top that most gardening guides skip over entirely, and it makes a real difference. What we call a cilantro "seed" is actually two seeds enclosed together inside a hard, round husk. That husk acts as a barrier that slows down moisture absorption and germination.
Before planting, gently crush the husks - you can do this by pressing down lightly with the flat side of the knife, rolling them under your palm on a hard surface, or even just giving them a squeeze between your fingers. Splitting the husk exposes both seeds and allows them to absorb moisture much more readily, which speeds up germination noticeably.
Harvesting: the key to a longer, bushier plant
Once your cilantro is up and growing, frequent harvesting is your most powerful tool for keeping it productive. Every time you snip stems, the plant responds by branching out and producing more foliage. It also redirects the plant's energy away from flowering - which means you significantly slow down the bolting process and extend your harvest window.
The best time to harvest is in the morning after any dew has dried from the leaves. Morning harvesting gives you the most flavorful herbs because the aromatic oils are at their most concentrated before the heat of the day dissipates them.
When you do cut, always use a sharp tool rather than tearing or pulling the stems. Tearing damages the plant tissue and can creaqte entry points for disease. A clean cut heals quickly and keeps the plant vigorous.
Tip: For herb harvesting, a small, sharp pair of pruners is ideal - they're maneuverable enough to snip exactly what you want without disturbing the rest of the plant. The Digz pruners are perfect for this kind of precise, delicate work.
A few more things to keep in mind
Cilantro has a relatively short productive lifespan in any one planting, so succession sowing is a great strategy if you use it a lot. Every two to three weeks, sow a small new batch of seeds. This way, as one planting starts to wind down, the next one is coming into its prime, and you have a near-continuous supply through the cooler months.
Also, don't be too disheartened if a planting does eventually bolt. The flowers attract beneficial insects to your garden, and if you let the seeds dry on the plant, you can collect them to use as coriander spice in the kitchen - or save them to sow your next batch for free.
