Originally from Brazil, Oxalis Triangularis is now grown all over the world as a houseplant. It is very popular because of its unique foliage and vivid colour. It belongs to the Oxalidaceae family.
It is a very low maintenance plant that adds a lot of colour wherever it is planted. The plant can go dormant if the soil dries out or inappropriate sunlight is provided. But you can easily revive it back by providing the ideal conditions again.
The plant can grow in full sun or partial shade. Lighting affects the colour of the blooms. If growing indoors, place it near a window where it'll receive few hours of sunlight every day. Protect the plant from hot afternoon rays as they may scorch the leaves.
The plant has large, velvety, triangle-shaped leaves which are purple in color. They usually occur in groups of three and create dense foliage. Stems topped with delicate white or lavender colored flowers rise above the foliage during the summer season creating a very unique look.
If you are growing your Oxalis in a container make sure it has proper drainage holes. Too much water or poor drainage can lead to fungal problems in the plant so do not over water the plant. Water when the top inch of the soil has dried. Stop watering the plant once it goes dormant.
Use a rich well-drained soil. The soil pH should be slightly alkaline about 7.5 to 7.8. You can add in organic content like compost while planting it. Add a layer of mulch over the soil to maintain moisture levels.
The plant grows around 6 to 12 inches.
Feed the plant once in two weeks with a balanced liquid fertilizer diluted by half. Feed regularly during early growth and blooming season. After that, you can cut back on fertilizing. Always water the plant before fertilizing.
Leaf spots, rust and powdery mildew are common problems. Also look out for spider mites. Treat with organic insecticidal spray. Clean the leaves for dust.
The plant is mainly grown for its ornamental value. It is edible and is eaten in certain cultures although it is toxic to pets.