Twilight Shamrock Oxalis Bulbs

Oxalis triangularis — Twilight Shamrock. The usual problem with purple shamrock indoors is that it goes green. Away from a bright window the anthocyanin fades and you are left with an ordinary-looking clover.

Twilight Shamrock holds its tone in moderate room light — still darkest in a bright spot, but not green in a normal living room. It is the one to buy for a shelf, a desk or a north window that still gets decent daylight.

Deep red-purple leaves, white flowers, and a compact habit that suits a small pot.

What you get

• Holds colour in ordinary room light rather than fading to green.
• Deep red-purple foliage with white flowers.
• Compact habit, comfortable in a 4–6 in pot.
• Folds at night — the classic oxalis movement.
• Dormant corms that regrow after the rest period.

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.