- Up for sale is budleja davidii, lavender flowers. 1000 seeds. - Butterfly bush is a semi evergreen shrub of about 12' tall with grey-green foliage. In late summer and early fall its arching canes bear at their tips long, 6-10", cones of densely packed, wonderfully perfumed, lavender flowers with an orange eye in the center. They are very attractive to butterflies and hummingbirds. - They are very fast growing and will bloom their second year, first year if planted early indoors. - They can be invasive. Check with the invasive plant list for your area. - Perennial bush. - Zone: 5-10 - Sun: full sun - Water: regular - Soil: rich, well-draining soil. - Height: 12' - Bloom time: late summer through fall. - Difficultly: easy