Description: Delphinium ajacis L., commonly known as Larkspur, is an herbaceous perennial plant that belongs to the Ranunculaceae family. It typically grows to a height of 1 to 3 feet (30 to 90 cm), with a spread of 1 to 1.5 feet (30 to 45 cm). The plant produces tall spikes of flowers in various colors, including blue, purple, pink, and white. The flowers are irregularly shaped with spurred petals, resembling the shape of a dolphin hence the genus name “Delphinium.” The foliage is deeply lobed and palmately divided. Larkspur blooms from late spring to early summer, attracting pollinators like bees and butterflies.
Known Range: Delphinium ajacis L. is native to Eurasia and North Africa. It is widely cultivated as an ornamental plant in gardens and landscapes around the world. It can thrive in temperate climates and is adaptable to various soil types, preferring well-drained, fertile soil.
Care Requirements:
Sunlight: Larkspur prefers full sun to partial shade. Ensure it receives at least 6 hours of sunlight daily.
Watering: Provide regular watering, especially during dry periods. Avoid overwatering to prevent root rot.
Soil: Plant in well-drained, fertile soil with a pH range of 6.0 to 7.5. Incorporate organic matter like compost into the soil before planting.
Fertilization: Apply a balanced fertilizer once a month during the growing season to promote healthy growth and prolific blooming.
Mulching: Mulch around the base of the plant to retain moisture, suppress weeds, and regulate soil temperature.
Pruning: Deadhead spent flowers to encourage continuous blooming and prevent self-seeding. Cut back the plant to the ground after flowering to promote vigorous growth for the next season.
Note:
Delphinium ajacis L. contains toxic alkaloids and should be handled with care. Keep away from children and pets.
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