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Oxalis triangularis
Oxalis triangularis
Oxalis triangularis
Oxalis triangularis
Oxalis triangularis
Oxalis triangularis
Oxalis triangularis
Oxalis triangularis
Oxalis triangularis
Oxalis triangularis
Oxalis triangularis
Oxalis triangularis
Oxalis triangularis

Oxalis triangularis
Free Gift

"Purple Shamrock"

SIZE 1

Perfect for pots

Loved by pollinators

Hand packed in paper bags

Half Hardy, may need
winter protection

£6.75

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.

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Colour:

Purple-maroon leaves + pink flowers

Height:

15-20 cm / 6-8"

Planting season:

Spring

Flowering time:

Summer

Botanical name:

Oxalis triangularis subsp. papilionacea

Light requirements:

Partial shade / full sun

Soil moisture:

Average

Naturalising:

Strong

Perennial:

Yes

  • Plant your little Oxalis bulbs (technically rhizomes) in late spring, in a pot or straight out into the garden soil after all risk of frost is over
  • Select an area with moderately fertile, humus-rich soil, that is in full sun or part shade
  • If growing in a pot, use a well-drained soil mix of equal parts loam, leaf mould (or soil-less compost) and grit
  • Set the oxalis bulbs 5cm, and space them 13cm apart
  • Water moderately when in growth and, for best foliage and flowers, apply a balanced liquid fertiliser monthly between April and September
  • Outdoors, in late autumn the top growth will die back. Pull or cut this away
  • Provide frost-free conditions for the bulbs to remain dormant over winter. During this time the compost should be kept barely moist
  • To freshen the compost, re-pot the bulbs every couple of years (when dormant), using the same pot, or move up to one size bigger
  • Indoors,pots will remain colourful throughout autumn and early winter. At this stage, allow the oxalis plants to dry out and have a period of dormancy before starting them into growth again in spring
  • Read more in our planting guide
  • Orders placed before 1 March 2022
    You can expect your order in March 2022
  • Orders placed 1 March - 15 April 2022
    You can expect your order in April 2022
  • Orders placed 16 April - 15 May 2022
    You can expect your order within 10 business days

    See our full shipping & delivery schedule

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