Most species of Oxalis are from South America and southern Africa.
Oxalis crassipes 'Rosea' is a popular shade plant that just doesn't know when to quit blooming! Although it's a perennial, this Shamrock blooms like an annual from late spring to early fall if kept moist. Vivid green, clover-like leaves are dotted with bright pink flowers that butterflies adore and are nice in fresh bouquets. Oxalis crassipes 'Rosea' forms a low mound that is the perfect size for edging or containers. Like many Shamrocks, the leaves of this variety close up at night or when light levels are very low. It does not set viable seed, so there's no need to fear that it will become a nuisance in the garden. This variety has been used in Southern gardens for many years.
| Plant Types: | Interior Plant, Perennial |
| Light: | Shade to Partial Sun |
| Height: | 10 inches to 1 foot |
| Width: | 1 foot 2 inches to 1 foot 4 inches |
| Zones: | 5a to 9b |
| Bloom Color: | Pink |
| Bloom Seasons: | Early spring, Mid spring, Late spring, Early summer, Mid summer, Late summer |
| Leaf Color: | Green |
| Special Features: | Deer resistant |
| Shape: | Mounded |
| Fertilizer: | Miracle-Gro® Water Soluble All Purpose Plant Food |
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Propagate from the seed in late winter or early spring at 55-64°F (13-18°C). Conduct division in spring. Rhizomatous species root readily.
Fibrous-rooted, bulbous, rhizomatous, or tuberous annuals and perennials. Some species can reach 1 ft. in height, but most species of Oxalis are low to the ground. Most species do well as shade plants in the under stories of trees. Members of the Oxalis genus spread via underground rhizomes and some can be extremely invasive.
In less hardy areas, grow Oxalis in a temperate or warm greenhouse.
Species from Southern Africa and South America make nice additions to a rock garden, raised bed, trough, or alpine house.
Flowers come in pink, white, rose or yellow. They are 5-petaled, bowl-shaped. Flowers will open only in sunlight. Close at night or in gloomy weather conditions.
Container grown plants should be kept just moist when dormant. Water moderately during the growing season. Does best in moist, rich soils. Most prefer soils with good drainage.
Implement a balanced liquid fertilizer on a monthly basis during the growing season.
Warning: can become invasive.
Leaf miners and spider mites. Also prone to rust, powdery mildew, fungal leaf spots, and seed smut.