How to Grow Watercress Indoors


Watercress is a nutrient-rich, leafy green vegetable that is easy to grow indoors. It grows well in water or in soil, and its mildly peppery flavor can be used to add a unique flavor to salads and other dishes. Here is a guide on how to successfully grow watercress indoors.

Can you grow watercress in the house

Yes, you can grow watercress in the house. Watercress prefers a cool, moist environment, so it’s best to create a mini hydroponic garden or place it in a container with a few inches of water and place it in a warm spot in your home. If you don’t have access to a hydroponic garden, you can grow watercress in a regular pot with soil. Make sure to water the soil regularly, and keep the soil moist. You should also provide indirect sunlight for the watercress in order for it to thrive.

Can you grow watercress in the house

Where does watercress grow best

Watercress grows best in a shallow stream of clean, running water with a pH between 6 and 8. It requires lots of sunlight and a consistently moist environment to thrive. Watercress is a semi-aquatic plant and can be found growing in the wild along the edges of rivers, streams, lakes, and ponds. It can also be grown in the home garden in containers of water or in moist, well-drained soil.

How to Grow Watercress Indoors

How to Grow Watercress Indoors

Growing watercress indoors is a great way to get fresh, nutrient-rich greens all year round. To get started, you will need a shallow container or tray filled with water and soil. Make sure the container or tray has drainage holes, as watercress does not like to be in standing water. Add a layer of nutrient-rich soil and peat moss to the container. Sow the watercress seeds about a quarter of an inch deep and keep the soil moist. You can harvest the watercress when the plants reach 4-6 inches in height.

  1. Choose the Right Container
    The first step when growing watercress indoors is to choose the right container for the job. Watercress needs to be grown in a container with good drainage. You can use a plastic or glass container, or even a large pot. Make sure the container has enough holes at the bottom to allow the water to drain out.
  2. Add the Soil
    The soil you choose for growing watercress needs to be well-draining and nutrient-rich. You can purchase a good quality potting soil or make your own with equal parts compost, peat moss, and perlite. Once you have the right soil, fill the container with it.
  3. Plant the Seeds
    Once you have the container and soil, it’s time to plant the seeds. Plant the seeds about ½ inch deep and about 1 inch apart. Water the soil until it is moist, but not soggy.
  4. Maintain the Water Level
    The key to successfully growing watercress indoors is keeping the water level consistent. Watercress needs to be kept in a moist environment, so it’s important to keep the water level at least 1 inch above the soil. You can also add a thin layer of water-retaining crystals to the soil for added moisture.
  5. Provide Adequate Light
    Watercress needs a lot of light to grow, so it’s important to provide it with adequate lighting. A south-facing window is ideal for watercress, as it will get plenty of sunlight during the day. If you don’t have a south-facing window, you can use a grow light or fluorescent light to provide adequate lighting.
  6. Fertilize the Soil
    Watercress needs to be fertilized every two weeks to promote healthy growth. You can use a liquid fertilizer or a slow-release fertilizer like pelletized fish meal.
  7. Harvest the Watercress
    Watercress is ready to harvest when the leaves are 4-6 inches long. Use a sharp knife to cut the leaves and stems off the plant, leaving about 1 inch of stem.
  8. Enjoy!
    Once you have harvested the watercress, it’s time to enjoy the fruits of your labor. Watercress can be used in salads, soups, stews, and more. Enjoy your homegrown watercress!


Growing watercress indoors is a great way to have access to a nutrient-rich, leafy green vegetable year-round. With the right container, soil, water, and light, you can easily grow watercress in your home. And once it’s ready to harvest, you can enjoy the delicious, peppery flavor of homegrown watercress.

About Me

I'm a passionate hydroponic gardener and have been growing with hydroponics for over 10 years. I'm always excited to share my experiences, tips, and advice with other hydroponic gardeners. Through my blog, I hope to inspire others to explore the potential of hydroponics and to share the joys and rewards of gardening with this amazing technology.

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