Triton Purple Radish
Though Triton Purple was developed specifically for its distinctive purple sprouts, in its mature form it is a type of Japanese winter radish also known as a "daikon," which simply means "large root" in Japanese. Daikon radishes account for the largest percentage of any cultivated vegetable in Japan, and can be found in some form in nearly every meal of that country.
Sprinkle evenly on top of coco coir, filtered soil, or other growing medium until it covers the entire surface.
Mist with a mister. Mist twice a day - in the mornings and in the evenings. Keep covered in darkness for the first 3-4 days. Remove cover after 3-4 days, and water from bottom once or twice a day until ready to harvest.
Harvest after 10 days
Radishes prefer fertile, well-drained, deep, sandy soils rich in organic matter for best growth. Most light soils in Utah are well suited for radish production. Heavy soils need to be amended with plenty of compost to allow good root development.
Before planting, incorporate up to 2-4 inches of well composted organic matter and apply 2-4 cups of all-purpose fertilizer (16-16-8 or 10-10-10) per 100 square feet. Work this into the top 6 inches of soil.
Radishes are always grown from seed. Radishes can be sown after soils reach 40ºF. Seeds germinate best at 55-75ºF and require 5-10 days to emerge. Seeds should be planted ½-1 inch deep. Maintain a uniform and moist soil surface to ensure good plant stands.
Radishes grow best when temperatures do not exceed 80ºF. Plant radishes at 10 day intervals to maintain a steady supply throughout the year. Fall plantings should start in mid- to late August to avoid summer heat. Thin closely spaced plants to encourage good root size. Radishes should be thinned to 1-2 inches between plants in the row with rows 10-12 inches apart. High summer temperatures trigger flower stalk development in many varieties. Hot weather also causes bitterness, increases “hot” flavors and causes root hollowness. Cooler conditions improve root flavor and quality.
Water radishes regularly. Water requirements depend on soil type. Mulching around the plants helps to conserve soil moisture. Use drip irrigation if possible. Moisture fluctuations cause root cracking, slow leaf development, and contribute to “hot,” bitter roots. Stress during the first 6 weeks of growth often leads to premature flowering and low yields.
Apply ¼ cup per 10 foot of row of a nitrogen-based fertilizer (21-0-0) after emergence to encourage rapid plant growth. Place the fertilizer to the side of the plants and irrigate it into the soil.