Is it okay to plant trees in September?
The ideal time to begin planting trees and shrubs is six weeks before the first sign of hard frost. September through November is the ideal time for tree planting because it allows the roots to become established before the ground freezes and winter sets in. Landscaping Rules: Design and Planning. Start in the fall. The best time to landscape your yard is in early fall, around the beginning of October. The weather is mild but not too cold, giving your plants time to establish roots before the first frost.