If the soil was made sufficiently moist before planting, little or no water is needed immediately after. The boxes may be taken to the hotbed or the greenhouse or placed in the cold frame, as may be required.
After transplanting, the flats should be looked over every day and late in the spring twice a day and watered whenever necessary. Until established, ventilation should not be too free. Seedlings planted in cold frames during the early spring often need no ventilation for a week or more. After the plants are well started more air should be admitted and the amount of ventilation increased as the season advances and as the plants become larger and stronger. Cold drafts upon small tender plants should be avoided as much as possible. This may be accomplished by opening the sash on the side of the frame opposite the prevailing wind.