When to Plant Peony in North Dakota

Growing Peony in North Dakota: Complete Guide

Peony (Paeonia lactiflora) is fall-planted — it goes in the ground a few weeks before the first fall frost and overwinters for blooms the following spring. Depending on your zone, North Dakota gardeners plant between July 25, 2026 (Zone 3b) and August 4, 2026 (Zone 4b).

Because North Dakota stretches across 3 USDA hardiness zones (3b, 4a, 4b), planting windows can shift by as much as two to four 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.

With 240 days to maturity, Peony fits comfortably within North Dakota's growing season in most zones. In the warmest parts of the state, a second planting later in the season may be possible.

Peony requires full sun (6+ hours) and moderate moisture. Great Plains gardens face strong winds and variable moisture — windbreaks and drip irrigation help significantly.

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 North Dakota.