Giant Summer Hyacinth is a South African and Madagascan native that brings unexpected elegance to late-summer gardens. This bulbous perennial rises 2 to 4 feet tall, producing tall spikes of fragrant, creamy white funnel-shaped flowers often tinged with soft green. The blooms emerge in late August through September, creating a second wave of interest when many other perennials are fading. Hardy from zones 6 to 10, it thrives in full sun with moderate moisture and moderate maintenance, making it a worthwhile addition for gardeners seeking something beyond the typical summer palette.
Full Sun
Moderate
6-10
48in H x 36in W
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Moderate
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The fragrance alone justifies growing Giant Summer Hyacinth; the funnel-shaped flowers release a sweet scent that carries across the garden in late summer. Rising 2 to 4 feet on sturdy stems, the flower spikes tower over nearby plantings with creamy white blooms tinged in pale green, reminiscent of gladiolus in form yet distinctly more graceful. The long, strap-like foliage creates architectural interest even before the flowers appear, and the late bloom time fills a crucial gap when many perennials have already peaked.
Giant Summer Hyacinth serves primarily as an ornamental bulb for garden beds and borders, valued for its dramatic late-summer flower spikes and fragrance. It works well as an annual in cooler climates or as a perennial in warmer zones, bringing vertical interest and scent to the garden when few other plants are blooming.
No timeline data available yet for this variety.
Plant bulbs outdoors in spring once soil is workable, positioning them 5 to 6 inches deep and 6 to 12 inches apart in full sun to light shade. In colder climates at the northern edge of the growing range (zones 6 to 7), choose sheltered locations and plan to provide winter protection with deep mulch, or lift and store bulbs indoors over winter.
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“Ornithogalum candicans hails from South Africa and Madagascar, where it evolved as a bulbous perennial adapted to seasonal moisture patterns. It entered the nursery trade under the synonymous names Hyacinthus candicans and Galtonia candicans, reflecting its long journey through European and American horticulture before settling into its current scientific classification within the Asparagaceae family. The genus name derives from Greek, rooting this plant in botanical history that spans continents and centuries.”