Oxalis - Seeds

Flower Details: Yellow. Cup-shaped. Five petals. Ten stamens.
Height: 2 to 16 inches (5 to 40 cm).
Flowers: Spring and/or summer.
Foliage: Obovate. Usually three, sometimes four leaflets.
Growing Regions: Zones 3-10

Sow Outside: Seed: cover seed. Late Summer and autumn. Spacing 3 to 16 inches (8 to 40 cm).

Sow Inside: Germination time: two weeks to two months. Temperature 60 to 70°F (16 to 21°C). Late summer and autumn (use fresh seeds). Transplant outdoors a few weeks after the last frost; temperatures should not drop below 41°F (5°C).

Requirements: Full sunlight or light shade. Good drainage. Soil pH 4 to 5. Ordinary soil. In cool areas bring tubers indoors over the winter. Propagate: dividing in the spring or autumn).

How to grow
Shamrock, and other Oxalis members can be grown from either roots or seeds. If growing from roots then bury the tubers about 4 to 5cm deep in the autumn. The seeds should be sown using fresh seed; this normally is produced at the end of summer. The seeds of shamrock should be lightly covered once sown. Oxalis species like to grow in sunny areas of the garden and have a preference for an acidic soil (pH 4 to 5) soil that has good drainage. If first growing shamrock indoors the seeds will take about two to eight weeks to germinate at 12 to 21 degrees centigrade. The young seedlings should be transplanted into the garden at about 10cm (small species) to 40cm (large varieties) apart in mid spring, well after the last chance of a frost.