Sow seeds in greenhouse in late winter, or direct sow in garden beds after threat of frost. Seeds require light to germinate, so sow seeds on the surface of the soil, and press in lightly. Grows best in well drained soils, even in gravel. Plants will re-seed easily if the spiky blooms aren’t harvested or deadheaded. In zones 3-8, the plants will perennialize. Prune stems/blooms back to the ground before new growth the following spring. Plants can be divided every 3-4 years in spring or early fall for new plantings. Globe thistle is drought tolerant, so will only need regular watering while new plants are getting established. Hardiness zones 3-8. Perennial.
Planting Depth
surface requires light
Soil Temp. Germ.
65-70Days to Germ.
14-21Plant Spacing
18”Row Spacing
12-24”Full Sun,
Moist Well Drained Soil