Why Plant in Fall?
There are many reasons. The soil is still warm enough to encourage roots to grow whereas in spring the soil is still warming up from the winter. Due to the fact that the plant no longer produces many flowers or foliage, the plant is able to spend a lot of its energy building roots. There is less shock and stress to the plant as it is about to go into dormancy. Planting in fall gives your plant a 6 month head start against spring plantings. Your plants will have less insects to deal with. Then there are the benefits of less weeds and less watering.
Fall is also a time to divide some perennials. Some perennials that benefit from dividing in fall are asters, native coneflowers, monardas (bee balms), day lilies, liatris, peonies, black eyed susans, garden phlox and creeping phox, siberian iris, bearded iris and veronica. This is not an all inclusive list but tries to list the most common perennials. If you are unsure if your plant should be divided in fall, google the plant or talk to a knowledgeable person.
Fall planting is not just for perennials, but shrubs and trees also benefit from fall planting.
Our nursery still has lots of perennials in stock available for immediate planting. Stop in before fall turns into winter.