Start seeds indoors 3 weeks before last frost or sow directly outdoors in spring when night temperatures are above 10C. Grow in fertile, well drained soil, spacing seeds 1-2 ” apart. Press seeds into soil but do not cover. Thin seedlings 4-6″ apart when small. Keep evenly moist for best bloom. After flowers fade, shear plants back to half their height to encourage rebloom.
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