Can You Harvest Cilantro After It Flowers? And Why Do Some People Think It Tastes Like Soap?

Cilantro, also known as coriander or Coriandrum sativum, is a versatile herb widely used in culinary traditions around the world. Its bright, citrusy flavor is a staple in dishes ranging from Mexican salsas to Indian curries. However, cilantro is also one of the most polarizing herbs, with some people describing its taste as refreshing and others claiming it tastes like soap. This article explores the lifecycle of cilantro, its harvestability after flowering, and the fascinating science behind its divisive flavor profile.

The Lifecycle of Cilantro: From Seed to Flower

Cilantro is an annual herb, meaning it completes its lifecycle within a single growing season. Understanding its growth stages is crucial for determining the best time to harvest:

Germination: Cilantro seeds, often referred to as coriander seeds, sprout within 7 to 10 days under optimal conditions. The plant prefers cool weather and well-drained soil.
Vegetative Growth: During this stage, the plant produces its characteristic lacy, green leaves. This is the prime time for harvesting cilantro leaves for culinary use.
Bolting: As temperatures rise, cilantro enters the bolting phase, where it rapidly grows a tall flower stalk. Bolting is triggered by heat and longer daylight hours.
Flowering: The plant produces small white or pink flowers, which are attractive to pollinators like bees and butterflies.
Seed Production: After flowering, the plant develops coriander seeds, which can be harvested and used as a spice or saved for planting in the next season.

Can You Harvest Cilantro After It Flowers?

The short answer is yes, but with some caveats. Once cilantro flowers, its leaves undergo significant changes in flavor and texture. Here’s what you need to know:

1. Flavor Changes

Before flowering, cilantro leaves are tender and have a bright, citrusy flavor.
After flowering, the leaves become tougher and develop a more bitter taste. This is because the plant redirects its energy toward seed production.

2. Edibility

While the leaves are still edible after flowering, they are less desirable for fresh culinary use. However, they can be used in cooked dishes where their bitterness is less noticeable.
The flowers themselves are edible and can be used as a garnish or in salads for a mild cilantro flavor.

3. Harvesting Seeds

If you allow the plant to flower and go to seed, you can harvest coriander seeds. These seeds are a valuable spice used in many cuisines.
To harvest seeds, wait until the flower heads turn brown and dry. Cut the stalks and hang them upside down in a paper bag to collect the seeds as they fall.

4. Regrowth Potential

Cilantro is not known for regrowing after flowering. Once it bolts and sets seed, the plant’s lifecycle is complete. However, you can sow new seeds for a continuous supply of fresh leaves.

Why Does Cilantro Taste Like Soap to Some People?

The polarizing flavor of cilantro has been the subject of scientific research and culinary debate. Here’s what we know:

1. Genetic Factors

Studies have shown that a significant factor in cilantro aversion is genetic. A specific gene, OR6A2, is responsible for detecting aldehydes, which are chemical compounds found in cilantro and also in soap.
People with a variation of this gene are more likely to perceive cilantro as tasting soapy or unpleasant.

2. Cultural Influences

Cultural exposure plays a role in cilantro preference. In regions where cilantro is a dietary staple, such as Mexico, India, and Southeast Asia, people are more likely to enjoy its flavor.
Conversely, in areas where cilantro is less commonly used, people may be more sensitive to its taste.

3. Psychological Factors

The “soapy” perception of cilantro can also be influenced by psychological factors. If someone has a negative first experience with cilantro, they may develop a lasting aversion to it.

4. Cooking Methods

Cooking cilantro can alter its flavor profile, making it more palatable to those who find it soapy. Heat breaks down the aldehydes responsible for the soapy taste, resulting in a milder flavor.

Tips for Growing and Harvesting Cilantro

To maximize your cilantro harvest and enjoy its flavor at its best, consider the following tips:

Plant in Cool Weather: Cilantro thrives in cooler temperatures. Plant it in early spring or fall to avoid premature bolting.
Succession Planting: Sow seeds every 2-3 weeks for a continuous supply of fresh leaves.
Harvest Early: Pick leaves when they are young and tender, before the plant bolts.
Use Bolted Plants Creatively: If your cilantro bolts, use the flowers and seeds in your cooking.
Save Seeds: Harvest coriander seeds for use as a spice or for planting in the next season.

Culinary Uses of Cilantro

Cilantro’s unique flavor makes it a versatile ingredient in many dishes:

Fresh Use: Add chopped cilantro leaves to salsas, guacamole, salads, and soups for a burst of freshness.
Cooked Dishes: Use cilantro in curries, stir-fries, and stews. Cooking mellows its flavor, making it more palatable to those who find it soapy.
Garnishes: Use cilantro flowers and leaves as a decorative garnish for dishes.
Spice: Ground coriander seeds add warmth and depth to spice blends, marinades, and baked goods.

Frequently Asked Questions

Q1: Can you eat cilantro after it bolts?
A: Yes, but the leaves will be tougher and more bitter. The flowers and seeds are also edible and can be used in cooking.

Q2: How do you prevent cilantro from bolting?
A: Plant cilantro in cool weather, provide consistent moisture, and harvest leaves regularly to delay bolting.

Q3: Why does cilantro taste like soap to me?
A: This is likely due to a genetic variation that makes you sensitive to the aldehydes in cilantro, which are also found in soap.

Q4: Can you grow cilantro indoors?
A: Yes, cilantro can be grown indoors in pots with adequate sunlight and well-drained soil.

Q5: What’s the difference between cilantro and coriander?
A: Cilantro refers to the leaves of the plant, while coriander refers to the seeds. In some regions, the entire plant is called coriander.

Cilantro is a fascinating herb with a complex lifecycle and a flavor profile that divides opinions. Whether you love it or hate it, understanding its growth stages and genetic influences can help you make the most of this versatile plant in your garden and kitchen.