Cucurbita pepo 50 days. We’re very pleased to offer this superior-quality, organically-produced, golden yellow zucchini that boasts strong disease resistance for healthy, long-season harvest. The vigorous, open-habited, compact plants produce a steady supply of vividly colored, cylindrical fruit with white, buttery flesh. When other varieties were suffering under the stresses of late-season mildew, Yellowfin was still cheerfully delivering beautiful squash with brilliant yellow stems to match. IR: CMV, PM.