25+ Seeds Pennsylvania Cucumbers Crunchy Tasting Cukes Grow Vegetable Garden How to Sow Cucumbers Sow cucumbers into small pots of seed starting or general-purpose potting mix. Sow two seeds about an inch (3cm) deep, then water well. Cucumbers need temperatures of at least 68ºF (20ºC) to germinate, so either place pots in a propagator for speedier germination, or simply wait until late spring to get started. Once the seedlings appear, remove the weakest to leave one per pot. Buy Seeds Online Organic Seeds Heirloom Seeds Non-GMO Seeds Vegetable Seeds Flower Seeds Herb Seeds Fruit Seeds Garden Seeds Seed Starter Kits Rare Seeds Bulk Seeds Indoor Gardening Seeds Seed Catalog Seed Packs for Sale Sustainable Seeds Greenhouse Seeds Seed Suppliers Planting Seeds Home Garden Seeds