Paeonia suffruticosa, 'White Empress' tree peony

Notable characteristics: Full white double blooms with dark flares at the base of interior petals. This is a good grower, with disease free foliage and yearly flowering. 

Hybridizer and year introduced: Irvine / Sutherland, 2001

Growth habit and size at maturity (10 years old): Upright growth habit. Vigorous grower, to 3' tall and 3.5' wide.

Flower form and size: Full double, 6-7"

Flower fragrance: Light and floral.

Bloom time: Late mid-season tree peony, blooms in our USDA zone 6a garden in the last week of May.

Zone hardiness: Proven in USDA zones 4-9.

Plant size: 2 year old grafted tree peonies have 1-2 woody stems, with offshoot buds, and a large graft root. The plant may or may not have some of its own roots already developed. This plant will likely bloom its first spring in the ground.

When we ship: FALL 2026