Annual floral seed Ageratum houstonianum

purplebluefor pots

100% Guaranteed! Read our guarantee. Blue Horizon is a favorite annual for cutting and easy-care summer gardens, appreciated for its deep rich hue, abundant clusters of fuzzy flowers, vigorous growth, and never-ending bloom. Tall and elegant, it mixes beautifully with salmon zinnias and snapdragons. Missouri Botanical Garden Plants of Merit award winner! Lifecycle: Annual Hardiness: Half Hardy Annual Size: 2-2.5' h x 1-1.5' w Sun: Full sun to partial shade Soil: Rich, moist, well-drained Season: Summer to fall Seed to Bloom: 12-13 weeks Color: Deep lavender blue HOW TO GROW AGERATUM HOUSTONIANUM SOWING INSTRUCTIONS: Depth: Surface sow and press in lightly; requires light to germinate. Sprout Time: 5-14 days Starting Indoors: Recommended. Sow indoors 6-8 weeks before planting out and keep at 75°F until germination occurs, then at about 60-65°F. Water from below by placing containers/trays in a larger tray of water; this helps prevent damping off and disturbance of seeds. Starting Outdoors: Direct sow about 1-2 weeks after the last frost for flowers mid-summer to fall. When to Set Outside: 1-2 weeks after last frost. PLACEMENT & CULTIVATION Dr. William Houston introduced Ageratum to England from Veracruz, Mexico, where he first collected the species in the 1700s. A reliable summer border favorite, Ageratum has handsome foliage and clusters of long-blooming fuzzy flowers that withstand summer rains. Deadhead to keep it blooming all season, lovely at the edge of the garden and in containers. It is easy to grow, deer and rabbit resistant, it also attracts pollinators, helpful as a companion plant in vegetable gardens as it suppresses some nematode pests.