85-90 days. Waltham 29 Broccoli Seeds. Brassica oleracea var. italica. Annual. Non-GMO. Developed at the University of Massachusetts Amherst's historic research farm, Waltham Field Station, heirloom Waltham 29 broccoli garden seeds have been cultivated to deliver higher yields, grow more uniform vegetable crops, with more repeat harvests.
Latin Name: Brassica oleracea var. italica
Days to Maturity: 85-90
Days to Germination: 3-14
Seeding Depth: 1/2"
Plant Spacing: 18"
Row Spacing: 24-30"
Plant Height: 24-30"
Growth Habit: Mounding upright
Soil Preference: Moist, organically fertilized, well-drained
Temperature Preference: 40-70 °F
Light Preference: Full sun - partial shade
Waltham 29 Broccoli Color: Classic dark green vegetation
Waltham 29 Broccoli Flavor: Sweet, savory, and crunchy