Caption: "Paeonia 'May Lilac', 2017, (2-SL-PK) Hybrid [Peony], pay-OHN-ee-uh HIB-rih-duh, 36 in. #Perennial (Saunders, 1950), USDA Hardiness Zone 4, Lavender. green rounded foliage, Bloom Month 5-6, In Garden Bed V2 for 1.6 YEARS. Hybrid Paeonia lactiflora x P.