- You will get 101+ Seeds of Rocky Mountain Bee Plant Flower Seeds. - Seller Notes: “Cleome serrulata. U.S. Grown seed. Tested 1/23-Germination 94%. Packed 1/23.”. - Planting Time: 7 Weeks. - Soil Type: Clay, Loam, Peat, Sand. - Life Cycle: Annual. - USDA Hardiness Zone (°F): 11 (40 to 50 °F). - Soil pH: Neutral. - Watering: Medium. - Sunlight: Full Sun. - The Rocky Mountain Bee Plant appears in the records of the Lewis & Clark expedition back in 1804. It was officially classified Cleome serrulata in 1817. The plant was used extensively as a dye, also for medicines and food. The Bee Plant grows fast and starts blooming in May, the blooms continue until the first frost. The bloom spikes are covered with small purple/pink flowers and will grow to over 4' tall. The flowers give off a scent bees and butterflies can't resist, also hummingbirds. The Bee Plant goes strong until the first frost and then dies. If you leave a few blooms to die on the plant, it will reseed itself. The Bee Plant evolved in the Rocky Mountains, so the seeds need to be stratified before a early spring planting. 100+ Quality heirloom seeds. - Some American Native Wildflower seeds need to go through a cold winter to germinate. This plant is one of them. They do this so the seed won’t sprout in fall, only to have the seedling not make it through a cold winter. I have stratified these seeds to simulate a cold winter(stratification) This raises the germination rate considerably. Thanks for looking!!. - Cleome serrulata. - Annual. - Full sun. - Spring, soil temp 65F+. - SOW 1/16" deep, 6"apart. Keep moist. - Germination 7-14 days. - Medium water. Light fertilizer if needed. - Flowers are lavender. Blooms from early summer through late summer.