Perennial plants with clover - like leaves are most likely members of the oxalis genus ( Oxalis spp . ) , which is very big , contain about 700 species , most of which are perennial . Oxalis plants , sometimes known as sorrel or shamrock , grow from stringy tooth root , tubers or rhizomes . pop plants in the genus sport the characteristic deeply lobed leave and round , five - petaled flowers that egress from tightly furled buds . Depending on the species and variety , some oxalis are hardy in cold weather climates , while others can not survive freezing weather and should be grown as houseplant .
Step 1
Among the best - known perennial oxalis are wood Hibiscus sabdariffa ( Oxalis purpurea ) , hardy in U.S. Department of Agriculture plant hardiness zones 9 and 10 and grown as houseplants elsewhere . Bearing pinkish , purple or white flowers in early to mid - summer , the industrial plant also feature green , clover - like leave that are creased in the center and empurpled underneath . The works grow to 6 column inch tall , prefer full sun to part shade and are suitable for container and edgings . Bowles variety ( Oxalis purpurea var bowlesii ) , hardy in USDA zones 8 through 10 , grows magniloquent , reaching 12 inches . The flowers are pink - purple .
Step 2
Edible Sorrel
Native to parts of the United States , violet woods sorrel ( Oxalis violacea ) , fearless in USDA zones 5 through 9 , features three - lob leaves that have a sour gustatory modality . Sprouting from bulb , the works spread via runners and can mold colonies when planted in sunny to lightly shaded spots . The flowers , which range from white through pink and purple , appear in mid - spring , with an episodic bloom seem in fall . Each violet Sir Henry Wood sorrel bears three heart - shaped leaf that are crease in the middle . The plants top out at 9 in , with an equal spread .
Step 3
Edging Plants
Some repeated oxalis species make excellent march plants , especially for loose garden within their hardiness zone . These include the depressa species ( Oxalis depressa or Oxalis inops ) , stout in USDA geographical zone 7 through 10 and featuring showy , swirl rose wine - pinkish flowers in summer . The plants , which grow only 2 inch grandiloquent , with a 3- to 4 - inch spread , require full sun and a sheltered location . Little strawberry mark oxalis cultivar like " Rosea " ( Oxalis crassipes " Rosea " ) , hardy in USDA zone 5 through 9 , according to Washington State University , are clump - forming plants , with heart - forge , scrunch up green leaf and small pink blossom .
Purple-leafed Varieties
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