Rapid Cilantro Sprouting - Understanding Cilantro Bolting and Methods to Prevent It
In the world of herbs, cilantro stands out for its vibrant flavour and versatility. Here's a guide to help you cultivate a steady supply of this popular herb throughout the growing season.
Cilantro seeds can be planted in the shoulder seasons, that is, early spring and late summer, for optimal growth. When sowing the seeds, it's best to direct-sow them in the garden bed, covering them with about a 1/4-inch (6mm) layer of soil, and keeping them consistently watered until they sprout.
For a continuous harvest, consider succession planting, which involves planting new cilantro seeds every six weeks. This technique ensures a constant supply of fresh cilantro throughout the growing season.
There are several cilantro varieties available, such as Slow Bolt, Calypso, and Leisure. These varieties originate from seed breeders and suppliers specializing in herbs and can be found from companies like Johnny's Selected Seeds and other professional seed distributors. Slow bolting cilantro varieties, like Slow Bolt, Calypso, and Leisure, tolerate heat better and bolt later in summer.
Cilantro bolts as a survival mechanism to produce flowers and seeds when temperatures heat up in late spring or summer. However, you can delay bolting by mulching around the plants, providing shade during hot summer months, and pruning immature flower stalks.
When the cilantro husk turns brown, it's time to harvest the seeds. Roll the seeds in your hand to remove the outer hull. These seeds, commonly known as coriander, are a spice used in many cuisines. To prepare coriander seeds for cooking, dry them in the oven on a low heat until they're crumbly, then grind them into a powder.
It's important to note that cilantro flowers do not become inedible or toxic, but their flavour fades. When cilantro plants begin to blossom and produce seeds, their flavour in the leaves begins to fade. Regular harvesting can help slow down the bolting process.
Cilantro prefers cooler growing conditions and bolts when soil temperature reaches 75 F (24 C). Thin cilantro seedlings to be about 3 to 4 inches (7.5 to 10 cm) apart, as they grow better in crowded conditions. Before planting the seeds, soak them in water for 24 to 48 hours, then allow them to dry.
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Remember, each cilantro plant has a short season, and bolting is inevitable. But with these tips, you can enjoy a bountiful harvest of fresh cilantro throughout the growing season. Happy gardening!
