Answer: The scientific name for the Sweet Pea Shrub is Polygala ? dalmaisiana. It grows best in USDA zones 9-10 or Sunset zones 8,9,12-24. It is hardy to 20F and grows in full sunshine to part afternoon shade in the hottest summer areas. The plant comes from western Australia and grows about 5' tall and wide. It flowers almost continuously from spring through fall and requires well-draining soils. Water regularly and enjoy!
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