65 Days to maturity. Cucumis sativus. Tendergreen Burpless Cucumber Seeds. Non-GMO, annual, open-pollinated, heirloom, monoecious, burpless, slicing cucumber. Suitable for growing in fields, containers (with support), garden plots, raised beds, and greenhouses (with pollinators). Resistant to Downy Mildew. Tendergreen Burpless cucumber is sweet, tender, non-bitter, and acid-free. As the name implies, most people experience very little, if any, burping from enjoying it. Its medium green, smooth, blocky fruit is at its best when harvested at eight inches or less. ~1,000 seeds/oz.