Dr. Alexander Fleming Peony is a stunning lactiflora cultivar that produces soft pink blooms in mid to late June, thriving across hardiness zones 3 through 8. This perennial bush grows 24 to 36 inches tall and settles into a stately presence in any garden, requiring a full 365 days from planting to first flowers but rewarding patience with years of reliable summer color. Native to zones where winter temperatures plunge well below freezing, it's been bred to stand firm through harsh cold, making it a dependable choice for northern gardeners who want cutting-garden quality without fussiness.
Full Sun
Moderate
3-8
36in H x ?in W
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Moderate
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Pink blooms emerge in the heart of summer, attracting butterflies and pollinators while resisting deer and rabbit pressure, a rare combination that makes this peony genuinely carefree once established. The mid to late June flowering window catches the beginning of cut-flower season, so you can bring bunches inside to fill your home. Fall planting means the bulbs settle into winter dormancy before spring awakens them, a rhythm that builds strong root systems and ensures abundant blooms year after year.
Peonies are celebrated as cut flowers, and Dr. Alexander Fleming is specifically recommended for flower beds where it can serve as both a garden focal point and a source of long-stemmed blooms for arrangements. The pink flowers hold well in water and open gradually, extending their vase life over many days. In the landscape, this cultivar anchors perennial beds and works beautifully in cottage-style plantings where its June display marks the turning point of the gardening season.
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Plant peony bulbs in fall, allowing them 365 days to establish roots before the first spring bloom. Dig a hole large enough to accommodate the bulb without crowding, and set it at the proper depth so the crown sits just below the soil surface. Space plants 48 inches apart to prevent overcrowding at maturity.
Cut peony stems for arrangements once the blooms have fully opened or are just beginning to open, usually in mid to late June. Use sharp shears to cut stems at a 45-degree angle, leaving at least two sets of leaves on the plant to support next year's growth. Blooms will continue to open indoors over several days, extending your enjoyment. Early morning harvest, when stems are fully hydrated, produces the longest-lasting cut flowers.
As a perennial bush peony, Dr. Alexander Fleming requires minimal pruning. Remove spent flower heads after bloom to redirect energy into root development, but leave the foliage intact until it naturally yellows in fall. In early spring, before new growth emerges, cut back any dead or damaged stems from the previous season. Avoid heavy pruning, which can weaken the plant and reduce the next season's bloom.
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