White Star Oxalis Bulbs

Oxalis triangularis — White Star. Most purple shamrocks flower in pale pink, which sits close in tone to the foliage and reads as muddy from a few feet away. These open pure white with a green centre, and the contrast is clean at any distance.

The flowers are also larger than average and held higher, so at the peak of a flush the pot looks white-speckled rather than solid purple.

Flowering runs in waves through summer: a heavy flush, a pause of two or three weeks, then another. Feed lightly after each one.

What you get

• Pure white star flowers with a green eye.
• Strong contrast against deep purple triangular foliage.
• Larger flowers held well clear of the canopy.
• 6–12 in, indoors or outdoors in zones 8–11.
• Dormant corms, cleaned and graded before dispatch.

How to grow it

• Plant: 1–2 in / 3–5 cm deep, pointed end up, 3–4 in apart in a pot with drainage. Soak the corms for an hour first — they wake up faster.
• Light: bright, indirect light or a few hours of morning sun. Strong light keeps the purple deep; deep shade turns the leaves green.
• Water: keep evenly moist while growing, then let the top inch dry between waterings. Never leave the pot standing in water.
• Temperature: 60–75°F indoors. Hardy outdoors in USDA zones 8–11; elsewhere grow it in a pot and bring it in before frost.
• Dormancy: the leaves die back every few months — that is normal, not death. Stop watering for 4–6 weeks, then start again and it regrows from the corms.

Shipped dormant as graded corms, cleaned and ready to plant. Dispatch in 5–7 working days. Leaf colour and flower shade vary with light, season and the age of the corm — the first flush after planting is usually the darkest. Keep away from cats and dogs: oxalis is high in oxalic acid and is not pet-safe if chewed.