How To Grow Cucumbers From Seeds In Pots. They need a temperature of at least 20ºc to germinate. The soil needs to be light, able to drain well, and full of nutrients.
Place the pots in a propagator or seal them inside a plastic bag at a temperature of 20°c until they germinate. In warm temperatures, cucumbers will grow quickly and ripen in about six weeks! If growing outdoor cucumbers, harden off your plants by gently acclimatising them to outdoor conditions, after all risk of frost has passed.
Like with any vegetable, loose, fertile soil is a must for successfully growing cucumbers in containers.
Planting cucumbers in pots is extremely easy and productive. Pot seedlings on after they have developed their first pair of ‘true’ leaves. Remove the bag and place on a windowsill. Place in a sunny position and water regularly.