Round Summer zucchini: 25+ Seeds Full sun Harvest: 50 days To direct sow, plant the seeds when the soil temperature reaches at least 70 degrees F. Plant them 1/2 deep, 3-4’ apart & thin to 8-10’ apart. For companion planting benefits, plant squashes along with corn but avoid planting them with potatoes. USA grown seeds Non gmo Summer Round Zucchini 25+ Seeds