Coriander, also known as Chinese parsley, is one of those aromatic plants that divides opinion – some love it for its freshness and exotic aroma, while others find its scent reminiscent of soap. But regardless of which camp you fall into, there’s no doubt that coriander is a key ingredient in many cuisines around the world – from Mexican and Indian to Thai and Vietnamese. Its distinct culinary properties have made it increasingly popular in households everywhere.
Good news? Coriander You no longer need to search the stores for your food. With a few basic materials and the right process, you can grow it right at home – without land, only in water. This method is not only convenient but also sustainable, as it allows you to regularly harvest fresh leaves without unnecessary waste and without pesticides. In the article below, we offer you a detailed guide on how to grow coriander in water, even if you don't have much experience with plants.
Everything you need for fresh coriander:
- Coriander seeds (they can also be culinary, but it is better to sow those for gardening)
- Glass container or small jar without drainage holes
- Clean water (ideally filtered)
- A bright windowsill or other source of natural light
- A (not too) patient approach
Step by step: how to grow coriander in water
1. Choosing the right container
For this type of hydroponic growing (i.e. growing without soil), it is crucial to choose a container without drainage holes. Smaller glass or plastic containers are ideal, as they allow you to observe the roots and control the water level. It is also important that the container is thoroughly cleaned before use, as any dirt or microorganisms can inhibit germination or damage the young shoots.
2. Soaking seeds: a prerequisite for successful germination
Coriander seeds have a hard shell, so it is recommended to soak them in water for about 24 hours before planting. This process softens the outer layer of the seed, allows water to penetrate more easily and activates the processes necessary for germination. You can soak the seeds right in the container where you plan to grow them later, or use a separate bottle.
3. Placing seeds in water
After soaking, you can carefully transfer the seeds to your chosen container of water. It is important that the seeds are not floating freely on the surface, but are just below it, as they need constant contact with the water for successful germination. If necessary, gently push them down or use a thin layer of sterilized gauze to hold the seeds in place.
4. Light as a growth engine
Coriander needs at least 4 to 6 hours of direct sunlight per day. A sunny windowsill facing south or southwest is the best choice. If you don't have such lighting, you can also use LED plant lights that simulate daylight. Light directly affects photosynthesis and thus the growth and aromaticity of the leaves.
5. Maintaining the water level
During the germination and early growth phase, it is crucial that the seeds and later the roots are always submerged in water. The water should be at room temperature, preferably filtered or boiled and cooled. It is recommended to check the water every few days – if it becomes cloudy or has an unpleasant smell, change it. A plant grows in full freshness only in completely fresh water.
6. First shoots and growth
Germination usually occurs within 7 to 14 days. When the first shoots appear, it is a sign that the plant is doing well. After germination, it is important to continue to provide the plant with enough light and maintain a stable microenvironment. If signs of rot appear (e.g. brownish roots or an unpleasant odor), immediate action should be taken by changing the water and removing any damaged parts.
7. Harvest – at the right time
When the plant reaches a height of around 10–15 cm and develops larger leaves, it is ready for the first harvest. Harvest the leaves gradually, always from the outside inwards to encourage further growth. It is important not to remove more than a third of the plant at a time, as this reduces its potential for regeneration.
8. Regular care and crop renewal
For long-term cultivation, we recommend starting a new germination cycle every 2-3 weeks so that you always have a fresh supply. If you notice that the plant is starting to flower (produce small white flowers), remove them as soon as possible - flowering means that the plant is heading towards the end of its life cycle and will stop producing leaves.
Tips for advanced coriander cultivation
- Use organic, ungerminated seed varieties for the best taste and growth.
- Gauze or fine mesh can be used as a support to keep the seeds underwater without completely submerging them.
- Water change every 10–14 days will prevent the development of algae and bacteria and maintain a stable environment.
- Using LED lights during the winter months it can significantly extend the growing season.
Conclusion: Growing coriander at home – an aromatic and sustainable decision
Growing coriander at home, just in water, is surprisingly easy and accessible even to complete beginners. It allows you to regularly harvest fresh, aromatic leaves without the need for soil or complex systems. It also represents a sustainable solution for anyone who wants to reduce their environmental footprint and at the same time diversify their dishes with homegrown vegetables. By following the steps described, you too can create your own mini herbal oasis in a few weeks - without a garden and without stress.
