Cress - Key Growing Information
SCIENTIFIC NAME: Lepidium sativum, Barbarea verna, Nasturtium officinale
CULTURE: Wrinkled Crinkled and Cressida Cress: sow shallowly in a 2-4" wide band, early spring through early fall or indoors, year-round, in a flat, about 20 seeds/in. Begin harvest in 7-10 days when 2" tall. Sow every 2 weeks for a steady supply. Upland Cress: direct seed from mid-spring onward, about 15 seeds/ft., 1/4" deep. Keep soil moist as the seed germinates slowly. Thin to 4-6" apart. Pick individual leaves or clip full rosettes at the root. Watercress: direct seed about ½" apart, ¼" deep. Thin to 4" apart and keep well-watered, or start seed indoors, keeping the soil moist. Transplant to large pots, cold frame, or field with soil that is fertile, humus-rich, well-limed, and has a pH around 7.0. Keep soil moist or sit pots in pans of water and renew water daily.
SEED SPECS: Wrinkled Crinkled and Cressida Cress: Avg. 11,600 seeds/oz. Upland Cress: Avg. 22,800 seeds/oz. Watercress: Avg. 133,700 seeds/oz.
PACKET: Wrinkled Crinkled and Cressida Cress: 250 seeds, sows 12 sq.in. Upland Cress: 250 seeds, sows 15'. Watercress: 250 seeds.