How To Grow Cucumbers From Seed In A Greenhouse. We seed directly into the growing cube, and at this time of year (january), it takes 29 days to get them ready for transplanting. Then, fill the pot with potting soil made specifically for vegetables and insert stakes into the soil so your cucumbers have something to grow on.
How to sow the seeds of cucumber indoor? As soon as the first shoots appear, weaker plants are removed and only the strongest cucumber plants. Turn the tray around occasionally so that the seedlings get an even amount of sun.
Remove the bag and place on a windowsill.
Before sowing the seeds, you should make the best soil for seed germination. Sow the seeds into a seedling tray, two seeds per compartment. Cucumbers also favor direct sunlight to help them generate sugars and grow rapidly so try to give them the sunniest spot you can. Sowing cucumber seeds in potting mix growing greenhouse cucumbers