What's the best month to plant trees?
Written by
Paul Reynolds
Reviewed by
Prof. Martin Thorne, Ph.D.Understanding tree biology and local climatology is required when determining the optimal month to plant trees. Deciduous trees, such as maple, respond best to planting during a dormant season, while evergreen tree species, like pine, respond best to warmer soils for planting. Therefore, the planting schedule is revised each year based on thermometer readings, rather than calendars.
Your positioning greatly alters suggested planting window time frames. Coastal zones avoid winter storms, pushing back the planting window until spring. Mountain zones wait for consistent thaw times. Urban heat islands start planting even sooner than normal. I collect microclimate data for site users using simple soil probes at a depth of six inches.
Tree Physiology
- Deciduous trees: Plant during dormancy late September to March
- Evergreens: Require 50°F (10°C) soil temperatures for root growth
- Bare-root stock: Only viable November to February
- Container trees: Flexible timing with summer precautions
Regional Climate Patterns
- Coastal zones: Delay until after winter storms pass
- Urban areas: Plant 2-3 weeks earlier than rural locations
- Mountain regions: Wait for consistent soil thaw above 45°F (7°C)
- Drought-prone areas: Prioritize fall planting for root establishment
Soil temperature is the most reliable indicator that I would suggest. I recommend buying a low-cost probe thermometer. Take measurements at dawn to ensure consistent reading. Hold the soil at 50°F (10°C) for seven days before planting evergreens. Deciduous trees can tolerate temperatures as low as 45°F (7°C).
Steer clear of the typical timing blunders that I have already fixed in gardens all over the country. Never, ever, consider planting in the middle of summer heat unless accompanied by an irrigation system. Avoid planting late in the fall in areas with freezing temperatures. Watch for alerts from your local extension service regarding unusual frosts. Keep a yearly record of your planting dates and the responses of your trees.
Read the full article: When to Plant Trees for Best Growth
