Brompton Stock is a fragrant, showy flowering plant that takes its name from a legendary discovery in 18th-century London. In the 1700s, a particularly highly fragrant form of Matthiola incana was identified at the Brompton Park Nursery, and that clove-scented excellence has defined the variety ever since. Hardy in zones 7-10, this cool-season bloomer reaches 12-36 inches tall and produces colorful, sweetly-scented flowers from May through July. Grow it as a tender perennial in mild climates or as a cool-season annual in hotter regions, where it thrives in full sun and moderate moisture before temperatures climb too high.
Full Sun
Moderate
7-10
36in H x 18in W
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Moderate
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The defining feature of Brompton Stock is its intoxicating clove fragrance, a quality so distinctive that it earned the variety its enduring name over three centuries ago. The flowers are colorful and showy, opening reliably from late spring through early summer in cool weather. Deer leave this plant alone, making it a safe choice for gardens where browsing is a concern. Low-maintenance and unfussy about soil, it asks only for consistent moisture, full sun, and the freedom to fade gracefully when summer heat arrives.
Brompton Stock is grown for its cut flowers and fragrance, bringing clove-scented blooms indoors for arrangements and perfuming garden spaces. In mild climates where it survives winter, it serves as a tender perennial garden flower; in colder regions, gardeners treat it as a cool-season annual to capture its spring and early-summer bloom.
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Start seeds indoors at 65-75°F, sowing 6-8 weeks before your last spring frost. Germination typically occurs within 7-10 days at these temperatures.
Transplant seedlings outdoors after hardening off once soil temperatures remain above 50°F and frost danger has passed. Space plants 9-18 inches apart to allow for mature width.
Direct sowing is possible in fall (in zones 7-10) or early spring for cooler-climate gardens, sowing seeds directly into prepared soil.
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“The Brompton Stock story begins in 18th-century London at the Brompton Park Nursery, where growers noticed something remarkable: one stock plant released an unusually strong, clove-like fragrance that set it apart from ordinary varieties. That discovery proved transformative enough to earn a lasting name. The common name Brompton Stock has persisted for centuries, often used broadly to describe fragrant stock varieties in general, a testament to the significance of that single find. Over the generations, nurserymen have developed numerous stock varieties, many of them hybrids crossing Matthiola incana with related species like M. sinuata and M. odorata, but the Brompton remains celebrated for its aromatic heritage.”