Ferry Morse Dark Green Zucchini Squash Seed Packet Delicious sliced and served fresh, steamed or simmered Best when 6-8 inches long 7-10 days to germination; after all danger of frost, sow seeds 5 inches apart evenly over a hill 9-12 inches high and 2 feet across 63 days to harvest When plants are 3 inches tall, thin by cutting to the 3 strongest plants; To avoid weeding, mulch heavily around plants and in rows