- You will get 500 Seeds of Catskill Brussel Sprouts Heirloom Vegetable Seeds. - Sunlight: Full Sun. - Life Cycle: Perennial. - Watering: Medium. - Catskill Brussel Sprout Seeds. - Catskill is a variety of Brussels sprout which is a member of the Mustard family. Its botanical name is Brassica oleracea (Gemmifera Group) 'Catskill'. - Catskill is a variety of heirloom OP Brussels sprout . Leaves usually appear in Dark spring green colour. Round, dark green sprouts grow along 20" stems. Fine flavor. Ready for picking about 90 days from setting or thinning plants in garden. - Leafy green vegetable plant that has a thick stalk that can grow up to three feet tall. The leaves are dark green and grow in whorls up the stem. The sprouts grow on the stalk of the plant in the leaf axils (between each set of leaves), maturing from the base of the stem first and continuing on up the stem. - Start seeds indoors about 8 weeks before outdoor planting. - Sow seeds OE inches deep in seed-starting formula. - Keep the soil moist at 70 degrees F. - Seedlings emerge in 10-21 days.