Manyflowered Gromwell (Lithospermum multiflorum) is a perennial herb native to the central and western United States as well as parts of Canada and Mexico. This plant thrives in light soils that are either dry or moist, preferring full sun exposure. It can be found growing wild in various regions including Alberta, Arizona, Arkansas, British Columbia, California, Colorado, Florida, Illinois, Indiana, Iowa, Kansas, Louisiana, Manitoba, Mexico Northeast, Mexico Northwest, Mexico Southwest, Michigan, Minnesota, Missouri, Montana, Nebraska, Nevada, New Mexico, North Dakota, Oklahoma, Ontario, Saskatchewan, South Dakota, Texas, Utah, Wisconsin, and Wyoming. Known for its edible properties, the seeds of this plant are a valuable resource; they can be consumed raw or lightly toasted to enhance their mild flavor, making them suitable as a seasoning in small quantities. This hardy perennial grows up to 0.5 meters tall and is adaptable to diverse habitats, thriving in zones 3-7. Its ability to grow in light to medium soils makes it versatile for gardeners looking to add a drought-tolerant plant to their landscape. Manyflowered Gromwell can be propagated via seed, making it easy to cultivate. Given its native range across North America and Mexico, this plant can adapt well to various climates within these areas, providing a useful addition to gardens and landscapes in temperate regions.
Manyflowered Gromwell (Lithospermum multiflorum) is a perennial herb native to the central and western United States as well as parts of Canada and Mexico. This plant thrives in light soils that are either dry or moist, preferring full sun exposure.
Start with Manyflowered Gromwell as a simple, low-maintenance perennial for your garden.
Seeds or seedlings, gardening gloves, trowel.
Plant in spring after the last frost or in fall before the first freeze.
Choose a well-draining soil with a pH between 6.0 and 7.5. Ensure containers have drainage holes.
Direct sow seeds in the garden after danger of frost is past, or start indoors 4-6 weeks before planting out.
Water sparingly to keep soil moist but not soggy. Monitor for pests and diseases.
Provide full sun exposure and water only when the soil is dry. Deadhead spent flowers to encourage more blooms.
Prune dead foliage in late winter to maintain plant health and appearance.
Overwatering, planting in heavy soils, neglecting to prune dead foliage.
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