Learn about several plant varieties and the planting information for each zone.
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Stems have tiny sharp thorns
Plant in rich, moist, but-well drained soil
Plant in full sun
Heat and drought tolerant
Plants reseed; deadhead to control self-sowing; may need staking
Height: 36-48 inches
Width: 18-24 inches
Annual in all zones:
All zones: Plant seeds or plants in spring after danger of frost has passed; plant in full sun; water until established; collect seed in late summer or fall.
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