Package = 4 grams, approximately 30 Grey Zucchini Summer Squash Seeds 45 to 48 days Germination: 7 to 10 days at 75 to 85 F Semi-bush zucchini that is easy to grow and will produce fruit all season long Best to pick when around 6 to 8 inches long 45-48 days. This semi-bush zucchini is easy to grow and will produce fruit all season long. Best to pick when around 6 to 8 inches long. Heat resistant. Package Contains approximately 30 Summer Squash, Zucchini: Grey Seeds. Planting Instructions Germination: 7 to 10 days at 75 to 85 F. Plant seeds 1 inch deep, 12 inches apart, with 3 feet between rows.