How to plant oxalises

Also known as Lucky Clovers or Iron Crosses, oxalises Tetraphylla are pretty clump-forming plants native to Mexico. Widely spread around the world, these summer-flowering perennials produce delicate umbels of funnel-shaped, soft pink flowers and clover-like leaves on wiry stems. Undemanding and fully hardy, they are equally suited to the border, rockery and container.

Plant around 10 cm deep in moderately fertile, humus rich, well-drained soil in full sun — allowing around 75 bulbs per square meter. Water regularly during growth and apply high potash feed monthly; if you garden organically, liquid seaweed is ideal as it is organic and comes from a sustainable source. Lift and divide overcrowded clumps in spring.

Always unpack on arrival and store in a cool place until ready to plant.

Potential problems, pests and diseases:

  • Snails and slugs: these pests will happily eat away at the young shoots and stems. Watch out for damage!

  • Rust: appearing in the form of bronze pustules on the underside of the leaves, this fungal disease can dramatically impact the appearance and strength of your lavateras. Since humidity promotes infection, avoid growing plants in areas with poor air circulation and water them first thing in the morning to allow their leaves to dry out quickly. Destroy any affected foliage.
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