Miss Willmott's Ghost is a legendary sea holly with an almost ethereal presence in the garden. Named after the renowned plantswoman Ellen Willmott, who famously scattered its seeds in other gardeners' borders, this heirloom reaches 3 feet tall and produces delicate, silvery-white flower heads throughout summer and fall. Hardy in zone 5, it demands full sun and thrives in lean, dry soil, asking for almost nothing once established yet rewarding with an airy, ghostly beauty that seems to float above the garden.
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5-5
36in H x 24in W
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The silvery-white coloring gives this sea holly its haunting common name, and it blooms generously from June through November. Deer steer clear of it, and the foliage and structure remain ornamental long after flowers fade. It handles drought beautifully and attracts pollinators while needing virtually no fertilizer or fussy care once it settles in.
Sea holly flowers are prized by flower arrangers and gardeners who value ornamental cut flowers; the silvery-white blooms and sculptural form work beautifully in fresh arrangements and dry extremely well for winter interest. The plant serves primarily as an architectural element in the garden, adding height, texture, and an ethereal quality to borders, particularly in Mediterranean and cottage garden styles.
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Sow seeds indoors in winter and keep at 70°F for 3 weeks to break dormancy, then stratify at 36, 40°F in the refrigerator for 4, 6 weeks. Return seedlings to 55, 65°F and expect germination within 30 days; if germination fails, repeat the warm/chill cycle. Seeds require a long chilling period, so starting indoors well before spring frost gives them the cold period they need.
Transplant seedlings outdoors after the last spring frost once they have developed true leaves and the soil has warmed. Harden off seedlings by gradually exposing them to outdoor conditions over 7, 10 days before planting in the garden.
Direct sow seeds in late summer to fall outdoors; the natural cold of winter will provide the chill period needed for spring germination.
For cut flowers, harvest stems when the flower heads are fully open and have developed their silvery-white coloring, typically from mid-summer onward. Cut stems in the morning when they are most turgid, and bring them indoors immediately. For dried flowers, allow stems to remain on the plant until fully mature and papery to the touch, usually by late summer or early fall, then cut and hang upside down in a warm, dry location to dry completely.
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“This heirloom carries the spirited legacy of Ellen Willmott, a legendary British gardener and plant collector of the early 20th century. The plant earned its whimsical common name from Willmott's mischievous habit of secretly sowing seeds in friends' gardens during visits, only to delight them months later when the ghostly flowers appeared unexpectedly. The practice became so famous that gardeners began finding her calling card in their borders, and the plant became permanently associated with her audacious generosity and horticultural wit. Today it remains a beloved heirloom, passed along by gardeners who appreciate both its otherworldly beauty and the charming story of the woman who helped spread it across gardens everywhere.”