SOIL & FERTILIZERS
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.