Seed Saving: Radishes will cross pollinate with all other varieties of radish, and must be isolated by at least half a mile from other varieties to protect genetic purity. Allow the radish plant to fully mature and send up a flowering stalk; the pods will form and turn from green to brown.
CURLED CRESS Slow Bolting Sprout 10 days Pungent Spicy Zesty Non-GMO 1000 Seeds
If planning to harvest cress at a small size, the plants can be spaced 2-3″ apart. Cress also grows well indoors for sprouting, since it does not need soil for germination. In England, cut cress shoots are used in a traditional sandwich consisting of boiled eggs, mayonnaise and salt.