Herbs growing outdoors in containers can be easily moved indoors for the winter. Before doing so, the plants should be acclimatized in early fall. Gradually move them indoors a few hours at a time over the period of several days so they get adjusted to the differences in temperature and light. Herbs growing indoors should be treated differently than those out-of-doors. One of the biggest problems is providing sufficient light to keep the plants from getting spindly. Grow them in the sunniest location you have or under fluorescent lights. Since the plants will not be using as much water as they did outdoors, water only when the soil is dry; apply enough water so that some drains out the bottom of the pot. Avoid overwatering which will cause the roots to rot. Check the plants frequently for aphids, spider mites, and whiteflies which are common pests on herbs grown indoors.
Availability of Seeds and Plants
Seeds and plants of various herbs can be obtained from online mail order companies that specialize in herbs, or you can often find a fairly good selection at local nurseries firms. The seeds and plants of the more common herbs, such as dill, basil, and parsley are usually available from local nurseries, while the less common ones should be purchaed from companies specializing in herbs.
Classification of Herbs
Herbs are classified either as annuals, biennials, or perennials. Annual herbs are usually grown from seed; they grow, flower, and produce seed during one season, and then die. Biennial herbs grow for two seasons, flowering the second year only. Perennial herbs, once established, overwinter and flower each season. Some herbs are tender perennials; these do not survive severe winters and are best grown as annuals or over-wintered indoors.
