Farmers plant on a big scale! They fill huge fields with millions of seeds. Plants grow well in these open fields, but not all plants are grown there. Many plants are first grown indoors, in greenhouses and in nurseries. Unlike open fields, these shelters protect plants from too much heat or cold. They also protect young plants from harmful diseases, insects, and weeds.
Plants are grown outside and inside. Plants grown inside are protected.
Greenhouses have glass walls that let the sunshine in. Plants that like heat grow well inside the warm, sunny space. On really cold days, steam pipes heat and reheat the greenhouse to keep the plants healthy. Any summer crops, such as peppers and eggplant, can be grown year-round in greenhouses. Did you know that an eggplant can weigh as much as 8 pounds?