I get asked a lot if fall is too late to plant trees, shrubs, and perennials, and the answer is a resounding “No”. In the fall, they are starting to get ready to retire for the winter, but that doesn’t mean they don’t have the strength to establish themselves- quite the contrary. In the fall, perennials, trees, and shrubs don’t have to spend their energy on making leaves and flowers and attracting pollinators, so what energy they have can be used for root growth and getting settled in their new place.
Some caveats apply – if the summer has been very dry, and the plants seem stressed in their pots because they haven’t gotten enough water, you might want to pass them by and find others that have been better cared for. You don’t want to start with a stressed plant.
Also, if it’s a dry fall, and there is water rationing, it’s better to wait until spring when hopefully more water will be available. Just like any other time that you are planting, the new plants need to be well watered for several weeks in order to do well.
In New England, it’s best to stop by Halloween. But until then, as long as there is enough water, you can have great success with new plants. And sometimes they are on sale, because nurseries are often looking to get rid of stock so they don’t have to overwinter it. Win-win!