Oca (Oxalis tuberosa) in the Wood Sorrels Database

Common names:
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General Plant Information (Edit)
Plant Habit: Herb/Forb
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Wet Mesic
Soil pH Preferences: Strongly acid (5.1 – 5.5)
Moderately acid (5.6 – 6.0)
Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Minimum cold hardiness: Zone 7a -17.8 °C (0 °F) to -15 °C (5 °F)
Plant Height: 30 inches (75 cm)
Plant Spread: Up to 42 inches (105 cm), usually smaller
Fruit: Other: Explosively dehiscent
Fruiting Time: Summer
Flowers: Showy
Flower Color: Yellow
Bloom Size: Under 1"
Flower Time: Summer
Other: Blooms intermittently throughout the year; some oxalis will bloom all year if given enough light
Underground structures: Tuber
Uses: Groundcover
Salad greens
Cooked greens
Dried Flower
Will Naturalize
Suitable as Annual
Edible Parts: Stem
Eating Methods: Raw
Wildlife Attractant: Bees
Other Beneficial Insects: Hoverflies, native bees, wasps
Resistances: Deer Resistant
Flood Resistant
Humidity tolerant
Toxicity: Other: All plants containing oxalic acid can be toxic to humans if enough is ingested.
Propagation: Seeds: Provide light
Needs specific temperature: 20C day, 10C night
Days to germinate: ~7 to 90
Depth to plant seed: Pressed into surface or barely covered
Start indoors
Can handle transplanting
Will not come true from seed
Other info: No dormancy, relatively short seed life; varieties with mid-styled flowers are poorly self-fertile, while other flower types are self-incompatible
Propagation: Other methods: Cuttings: Stem
Cuttings: Tip
Other: bulblets, tubers
Pollinators: Hoverflies
Various insects
Miscellaneous: Tolerates poor soil
Goes Dormant


Photo gallery:
Photo courtesy of: Markus Leupold-Lowenthal
By admin
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Location: EcuadorDate: 2014-07-05Photo courtesy of: Dick Culbert
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Location: PeruPhoto courtesy of: Laurenjm
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Location: RHS Harlow Carr, Yorkshire, UKDate: 2019-06-30
By kniphofia
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Location: PeruPhoto courtesy of: leguyb
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Discussion Threads about this plant
Thread Title Last Reply Replies
Oxalis tuberosa by valleylynn Dec 18, 2014 9:03 AM 1
☯ Welcome☆ by NickyNick Oct 20, 2019 12:58 AM 192
Garden Highlights 2019 by NickyNick Sep 2, 2019 11:10 PM 0

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