Watercress is a perennial herb that naturally grows in water but will also grow indoors in a container. This herb has a spicy peppery taste and is used in many dishes like soups and salads. Plant the watercress seeds in the spring and grow them in a sunny condition. Never let these water-loving plants dry out. Harvest leaves when needed but for the best taste, harvest them before the plant flowers.
Fill the container with a soil-less medium that is well draining and nutrient rich. Look for media that contains perlite and peat moss.
2
Water the container from the top to saturate the media and set it on a tray filled with water to keep it wet. Watercress likes plenty of water.
3
Sow seeds 1/4 inch deep. Sow them thickly to ensure you have plenty of sprouts.
4
Keep the seeds wet until they sprout. Once each sprout has a full set of leaves, thin the plants so they are spaced 8 inches apart.
5
Set the container in a larger container filled with 3 inches of water. This will ensure the watercress stays wet and the roots are submerged. Change the water once a week.
6
Fertilize the watercress with a liquid 10-10-10 fertilizer at the rate recommended by the manufacturer.
7
Harvest the dark leaves year round by cutting or pinching off the leaves.
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