Herb Specifications
- Season: Perennial
- USDA Zones: 5 - 11
- Height: 12 - 24 inches
- Bloom Season: Late spring to mid summer
- Bloom Color: White
- Environment: Partial shade
- Soil Type: Varying soil types as long as they are saturated, pH 6.5 - 7.5
Planting Directions
- Temperature: 50 - 60F
- Average Germ Time: 7 - 14 days
- Light Required: No
- Depth: 1/4 inch
- Sowing Rate: 15 - 20 seeds per plant
- Moisture: Keep seeds moist until germination
- Plant Spacing: 9 - 12 inches
Watercress (Nasturtium Officinale) - Watercress is cultivated as both a culinary herb as well as a medicinal herb. It is a succulent, leafy plant that thrives in marshes, bogs and water gardens. The lobed leaves can be eaten raw, cooked or dried. They have a pungent flavor and are crisp. Watercress needs to be harvested before the buds appear as the leaves turn bitter after flowering.
As a medicinal herb, Watercress has long been used to treat sore throats and sinus congestion. It is very rich in vitamins and minerals and in alternative medicine, it is used for a wide variety of ailments. Some other common names that Watercress is called are: water rocket, water radish, and hedge mustard. It is in the mustard family.
Watercress is highly ornamental. It is a fast-growing plant that prefers partial shade. It produces white flowers in mid-summer which are very attractive to bees. It can be grown in an indoor herb garden. Place the containers in a tray of water and keep the water constantly supplied. Fluorescent lamps or growing lights are needed. The herb seed can be started indoors 6 weeks before the last expected frost and then transplanted outdoors. The ideal setting is along a pond or stream bank.