Look for amethyst flower at nurseries nationwide. It grows well in Zones 2-11 of the U.S.D.A. Plant Hardiness Zone Map.
Choose a variety of amethyst flower. Several are available, but 'Blue Troll' is one of the most popular.
Plant amethyst flower 8 to 10 inches apart in well-drained soil after the last frost date in your area.
Prepare the bed by working in a little compost or sphagnum peat moss.
Mulch with dried grass clippings, pine needles, wood chips or another organic material.
Keep moist. If desired, fertilize once every four to six weeks with a water-soluble fertilizer.
Pinch off spent blooms to direct growth into strong roots.
Deal with any problems promptly. Whiteflies are a common pest. If they strike, spray with an insecticidal soap as directed on the package.
Pull out the plant after the first frost.
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