Oxalis triangularis bulbs

Oxalis triangularis, commonly known as the purple shamrock, is grown for its striking triangular foliage in deep purple and burgundy tones. Each leaf is divided into three distinctive sections that open in daylight and gently fold together as evening arrives. Delicate pale pink or white flowers rise above the leaves on slender stems, adding a soft contrast to the richly coloured foliage. With its elegant form and almost constant movement, this is a plant that rewards a closer look.

Our Oxalis triangularis bulbs are ideal for growing in indoor pots, conservatories or sheltered patio containers. Although often described as bulbs, they are technically small rhizomes, which begin producing fresh shoots after planting in spring. Plant several together for a full, generous display, using a free-draining, peat-free compost. Position the pot in bright, indirect light and water when the upper layer of compost feels dry, taking care not to leave the rhizomes sitting in water.

Oxalis triangularis is not fully hardy, so protect it from frost and bring outdoor containers inside before temperatures fall. The foliage may occasionally die back as the plant enters a natural period of dormancy. If this happens, reduce watering and allow it to rest; fresh growth should follow when watering resumes. Easy to grow and wonderfully distinctive, purple shamrock brings lasting colour and character to windowsills, tabletops and summer container displays.