Find tropical and exotic seeds for your specific zone

Hardiness of plants is a term used to describe their ability to survive adverse growing conditions. It is usually limited to discussions of climatic adversity. Thus a plant's ability to tolerate cold, heat, drought, or wind are typically considered measurements of hardiness. In temperate latitudes, the term is most often used to describe resistance to cold, or cold-hardiness and generally measured by the lowest temperatures that a plant can withstand.

Plants vary a lot in their tolerance of growing conditions. The selection or breeding of varieties capable of withstanding particular climates forms an important part of agriculture and horticulture. Plants can adapt to some extent to changes in climate. Part of the work of nursery growers of plants consists of hardening (or hardening off) their plants, to prepare them for likely conditions in their later life.

The 'browse by zone' search shows, which plants are perennials (survive the winter) in that specific zone and plants that are only annuals in all zones. All plants that are perennials in higher zones than yours, can also be planted as annuals or as house plants, if they are container suitable (most of the tropicals are). The zone chart may help you to determine, which seeds you can plant in your garden without the need to replant each year or to fear a frost damage.