As long as the plant’s sun, soil and moisture requirements are met, watercress can even be grown indoors. Watercress cultivation can be cultivated both on a garden scale basis and also on a large scale. Kratky method watercress for raising watercress in soil-less culture is … Find a source for a transplant of watercress. The plastic will keep the seeds warm and moist, while the tray or bucket filled with water will keep the potting mix constantly moist. Outdoor watercress crops should be sown directly into the pot you wish to grown them during March or April - once average day temperatures reach 8-15°C it will be warm enough to encourage germination within 14 days. Harvest it by cutting it back to a height of 4 inches. Considered a cool-weather crop, watercress is perfectly content hanging out when indoor temperatures are between 60 and 70℉. To provide the right growing conditions for watercress, simply set your pots in deep trays or dishes that are kept topped up with water. Since growing right in a stream is unlikely for most people, these instructions will be for anyone wanting to grow watercress in pots. Growing media Bitten by the travel bug at the age of 15 after a trip to Europe, Anderson fostered her love of style and fashion while living in New York City and earning her degree at New York University. © Copyright 2020 Hearst Communications, Inc. Perennial Vegetables: From Artichokes to "Zuiki" Taro, a Gardener's Guide to Over 100 Delicious, Easy-to-Grow Edibles; Eric Toensmeier. Start seeds two to four weeks before the last frost is expected. Growing Watercress Plants. Grow watercress from cuttings by placing a bunch or several stems in a glass of water. Top tip: If you have a surplus of fresh leaves through summer, dont let them go to waste. You dont need a river or stream running through your garden to grow watercress. Plantings of watercress are either direct-seeded or established in seedbeds in nurseries and then transplanted to main growing area. Although watercress (Nasturtium officinale) naturally grows in shallow, running water, it is also easily grown in a planter. Watercress is hardy in U.S. Department of Agriculture plant hardiness zones 6 through 9. Watercress can be grown from seed, transplants or cuttings. As long as your watercress plants are kept well watered they will thrive in a pot of good quality compost. All rights reserved. Growing watercress is easy because it doesn't require much space or maintenance. Considered a cool-weather crop, watercress is perfectly content hanging out when indoor temperatures are between 60 and 70℉. Mixing charcoal with the compost will also help to keep things fresh. Adding a complete, water-soluble fertilizer to the water, at manufacturer recommended dosages, can solve the problem. Watch for signs of nutrient deficiency. It grows very quickly, typically reaching full size (up to 20 inches in height, though some wild individuals have been logged at as tall as 75 inches when grown in water) in around 45 to 60 days. Make sure the growing medium stays moist, and replace the water every 2 to 3 days so it doesn’t stagnate. Regardless of whether you harvest in the spring or in the fall, watercress will have the best, most peppery flavor if harvested when temperatures are lower than 85 degrees Fahrenheit. ", keywords = "Chemoprevention, Gluconasturtiin, Glucosinolates, HPLC, Isothiocyanates, Light quality, Nasturtium officinale R. Watercress grows well in cool, but sunny spots with partial shade. Harvest watercress before the plants begin flowering and before the outdoor temperature rises above 85 degrees Fahrenheit to avoid the flavor becoming too bitter or strong. Place the container indoors or outside, keeping the temperature between 50 and 60 degrees Fahrenheit. Place your s… Ideal planting times are in early spring after the last frost, or in early fall before temperatures drop too low. Planting watercress in the shallow portion of a steady-flowing, freshwater stream or creek is ideal, but you can also create your own pool or bog of water. Prior to planting, choose a sunny location and amend the garden soil with 4-6 inches (10-15 cm.)
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