Per @gardenfrenzy, gardeners should soak napa cabbage seeds two to four hours; cauliflower seeds three to six hours; cucumber seeds four to six hours; green bean seeds five to six hours ...

Cucumbers must be kept moist, but not soaking, to prevent a check to the fruit. Once the fruit appears, give them a boost by feeding every fortnight with a fertiliser high in potash.

The length of time required for soaking depends on the seed size and type: Small seeds (lettuce, basil, or carrot seeds): 6–12 hours Medium seeds (tomato, pepper, or cucumber seeds): 12–24 ...