When to Plant Arborvitae in Maryland

Growing Arborvitae in Maryland: Complete Guide

Arborvitae (Thuja occidentalis) is planted as nursery stock — a container-grown or bare-root plant from a garden center, not seed. Depending on your zone, the ideal spring window in Maryland falls between February 20, 2027 (Zone 8a) and March 23, 2027 (Zone 6a); early fall works too, once summer heat breaks.

Because Maryland stretches across 5 USDA hardiness zones (6a, 6b, 7a, 7b, 8a), planting windows can shift by as much as six to eight weeks from one end of the state to the other. Gardeners in the warmer southern zones can start earlier, while those in cooler northern zones should wait until the zone table above shows their last frost has passed.

Arborvitae requires full sun to light shade and moderate; water well first year moisture. Mid-Atlantic summers bring heat and humidity — ensure good air circulation and watch for fungal issues like powdery mildew.

For the most precise planting dates tailored to your exact location, enter your ZIP code on our planting calendar or use the zone table above to find the schedule for your area of Maryland.