Most vegetable crops are grown as annuals in the northern climate, but a few are hardy enough to withstand our winters. Established perennials can remain productive for many years, making site selection critical. Many perennials can adapt to a variety of soil types, but plants grown in moisture holding, well drained soils will be most productive. Choose soils that are not prone to compaction for healthy root growth.
Perennials are relatively static are not moved around the plots in rotation with other crops. As a result, fertility requirements must be provided in place, and weed, disease, and insect controls rely on methods other than crop rotation.
This section will detail the production and culture of asparagus, rhubarb, and Jerusalem artichoke. Chives, mint, and thyme can also be grown as perennials; see the herb section for their culture.