Herbs and Vegetables in the Winter Greenhouse

摘要

It is possible for the -hobby greenhouse grower to enjoy many types of vegetables in the winter greenhouse, however a favorite, the tomato and pepper are usually not one of them. The shortened photoperiod and cool temperatures combine to discourage tomato and pepper from setting flowers or ripen-ing their fruit. Natural pollinators -bees- are absent; and the pests - white fly and aphids -can be abundant if not controlled. And then levels of carbon dioxide needed for photosynthesis are low in the un-ventilated hobby greenhouse. Disease can thrive in the high humidity of the greenhouse.