Origin: Central/South America
Flower color: pink, except O. regnellii which is white.
Flowering period: entire summer
Average plant height: 4 – 12 inches
Planting depth to base of bulbs: 2 inches
Spacing between bulbs: 2 inches
Type of bulb: (depending on the variety) bulb, tuber, rhizome, with O. regnellii being a rootstock.
Light requirements: warm and sunny (up to 25% shade)
Landscape uses: border, beds, rock garden and pots.
Oxalis species can be divided into two groups: winter hardy and not winter hardy. Those that are not winter hardy are: O. deppei, O. lasiandra and O. regnellii. The petals of Oxalis open wide when the sun is shining and close in the dark. The leaves are clover-like.
There are over 800 different species that include both garden plants and noxious weeds.
- Oxalis deppei (lucky clover) – pink-red
- Oxalis deppei ‘Iron Cross’ – blackish brown at the base of the four leaflets.
- Oxalis lasiandra – pink
- Oxalis regnellii – white