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Hookedspur Violet (Viola adunca) is a native perennial plant found in various habitats across North America, including meadows, open woodlands, and mountain slopes. One of its most attractive features are the delicate, deep purple flowers that stand out against the deeply-veined, heart-shaped leaves. The flowers have a sweet fragrance and give an intriguing charm to the forest understory in early spring. Hookedspur Violet's compact and clumping growth habit makes it suitable for small garden spaces and edging along pathways.

 

Hookedspur Violet typically blooms from late winter to early spring, often in March and April. The cheerful purple flowers emerge on slender stalks above the foliage, attracting early-season pollinators such as bees and butterflies and providing an important early season source of nectar. Hookedspur Violet also serves as an important larval host plant for several endangered butterfly species, including several subspecies of Zerene Fritillary (Speyeria zerene) and the Mardon Skipper (Polites mardon). The Hookedspur Violet itself is listed as endangered in Connecticut and Massachusetts. Although cross-pollination is important for genetic diversity, the perfect flowers (meaning they have both male and female reproductive parts) allow them to produce seeds without the need for pollinators. This adaptation ensures that Hookedspur Violet can reproduce successfully even in areas where pollinators may be scarce. Violets also make use of a reproductive strategy referred to as “ballistic seed dispersal”, in which pressure builds in the fruit capsules until fully ripened, when they explode with a force substantial enough to widely scatter the small, lightweight seeds several feet away from the parent plant.

 

The plant's ability to thrive in various soil types and light conditions makes it adaptable to many landscape applications, but it prefers well-drained soils that are rich in both mineral and organic matter, tolerating a wide range of soil types, including loam, sand, and clay. Plants thrive in moist soils but can tolerate some dryness once established. For germination, Hookedspur Violet seeds require a period of cold stratification to break dormancy. Sow the seeds in a prepared seedbed in the fall, ensuring they are lightly covered with soil and watch for emergence the following spring.

Hookedspur Violet - Viola adunca

SKU: S-VIOADU
$8.00Price
  • Scientific Name Viola adunca
    Habitat Grasslands, meadows
    USDA Zone 3 - 9
    Native Region W North America
    Phenology Perennial
    Height 4 - 6"
    Light Requirement Full Sun - Partial Sun
    Water Requirement Low
    Soil Type Loam, Sand
    Germination Time 90-120 days cold treatment, 20-30 days warm
    Difficulty (1 - 5) ⸙⸙⸙⸙
    Planting Season Fall, Late Winter
    Bloom Season Mid Spring - Mid Summer
    Pollinators Bees, Butterflies
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