When to plant
Plant Alstroemeria rhizomes in spring after frost danger has passed and the soil begins to warm. In milder climates, autumn planting is possible if the ground remains workable and well-drained.
Where to plant
Choose a location with full sun to partial shade. Morning sun with afternoon shade can help protect foliage in hot regions. The soil must be well-draining — Alstroemeria dislikes standing water or slow-draining soils.
Preparing the soil
Loosen soil to a depth of 20–25 cm. Remove stones, weeds, or old roots. Mix in compost or organic matter to enrich the bed. In heavier soils, add grit or coarse sand to improve aeration and drainage.
Planting the rhizomes
Lay the rhizome horizontally or at a shallow angle, and cover it so the top is just below soil level. Space plants about 30–45 cm apart to allow room for growth and air circulation. In containers, choose a deep pot and ensure free drainage.
After planting
Water gently but thoroughly to settle the soil. Maintain even moisture during establishment, but avoid overly wet conditions as the roots grow in.
During growth & blooming
As shoots and foliage develop, feed periodically with a balanced fertilizer. Flowering stems form above the leaves, offering clusters of blooms that last several weeks. Deadhead spent blooms to keep the display tidy and prompt further flowering.
After blooming / end of season
Allow foliage to die back naturally, which helps the rhizome store energy for next year. In colder climates, provide mulch for protection or lift rhizomes if frost is severe. In warmer zones, plants may overwinter in place if soil drainage is good.
Extra tips
Alstroemeria works beautifully in mixed borders, with tall perennials, or as a cut‑flower source. Use clumps rather than single stems for visual impact. In containers, rotate or turn pots so light reaches all sides. Avoid disturbing established roots frequently — they perform best when left undisturbed.
