46 Days to maturity. Cucumis sativus. Greenhouse Long Burpless Hybrid Cucumber Seeds. Non-GMO, annual, F1 hybrid, parthenocarpic, burpless, slicing cucumber. Suitable for growing in fields, containers (with support), garden plots, raised beds, and greenhouses. The Greenhouse Long Burpless F1 cucumber is a hybrid variety best when planted in spring. Plants produce medium vines with fruits varying in 8-12 inches long. An early, self-pollinating, parthenocarpic cucumber that is great for indoor growing. ~1,000 seeds/oz.