Oxalis triangularis
"Purple shamrock"
Orders placed before 1 March 2025
You can expect your order in February/March 2025
Orders placed 1 March - 15 April 2025
You can expect your order in March/April 2025
Orders placed 16 April - 15 May 2025
You can expect your order within 10 business days
UK orders over £50
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UK orders under £50
£4.99
Northern Ireland orders under £50
£5.99
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Description
Often referred to as the purple shamrock, this beautiful and curious plant actually has nothing to do with Ireland—it comes from Brazil! Oxalis triangularis has stunning triangular, three-lobed leaves—each lobe like a pair of butterfly wings—in vivid purple-maroon and shades of wine-red. In summer, the leaves are accompanied by numerous small, trumpet-shaped pinkish or white blooms. These are attractive in their own right, but it’s the leaves that are the real stars of the show. Incidentally, the foliage has a photonastic response—in other words, the leaves open up during the day and close again at night!
Oxalis triangularis subsp. papilionacea may be grown to plant outdoors in summer pots, or a position at the front of the border. It is, however, a frost-tender plant: it might survive outdoors over winter in warm, sheltered gardens, but expect to give it some winter protection. Luckily, it does adapt very well to indoor conditions, and it can survive and indeed thrive, for many years as a long-lived houseplant.
Key features
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Perfect for pots
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Suitable for indoors
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Comes back every year
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Loved by pollinators
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Thrives well in full sun
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Great for shade
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Packed in paper bags
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Low maintenance
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RHS Award (AGM)
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May need winter cover
Specs & details
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Botanical name
Oxalis triangularis
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Flower colour
White
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Bulb size
1
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Established height
10-20cm
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Established spread
10-20cm
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Plant spacing
100 bulbs per m2
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Leaf colour
Purple
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Habit
Spreading
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Life cycle
Perennial
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Hardiness
Half hardy
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Years to establish
1st year
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Sunlight
Full sun
Partial shade
Dappled shade -
Position
Sheltered
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Suitable for
Indoors
Pots
Large containers
Borders
Gravel gardens
Low maintenance gardens -
Soil acidity
Any
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Soil moisture
Free draining
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Soil type
Loam
Sandy
Stony
Multipurpose compost -
RHS Award (AGM)
Yes
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Growing skill
Easy to grow
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Scented
No
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Pollinator-friendly
No
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Mouse resistant
No
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Rabbit resistant
No
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Deer resistant
No
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Toxicity
No report
Useful information
-
Orders placed before 1 March 2025
You can expect your order in Feb/March 2025Orders placed 1 March - 15 April 2025
You can expect your order in April 2025Orders placed 16 April - 15 May 2025
You can expect your order within 10 business days
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