Oxalis

Summer flowering bulb

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.

Principal varieties

  • 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

Watch our planting flower bulbs video

Related variations

Widow’s tears

African lily

Belladonna lily

Windflower

Tuberous begonia

Bletilla

Indian shot plant

Commelina

Crocosmia

Cyrtanthus

Eucharis

Eucomis

Summer hyacinth

Gladiolus

Gladiolus callianthus

Homeria

Hymenocallis

Leucocoryne

Liatris

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