How to Grow Mallow (Lavatera): Hollyhock-Like Blooms for Sun and Containers

How to Grow Mallow (Lavatera)

Mallow (Lavatera trimestris) is a fast, bushy annual (perennial in mild zones) with hollyhock-like, 2-inch pink or white flowers and heart-shaped leaves. Native across North America, Asia, and Australia, it grows 1–4 feet tall depending on variety and attracts butterflies. Excellent in beds, borders, and patio containers; also makes lovely cut flowers.

Propagation

Sow seeds directly after frost, ⅛ inch deep. Germinates in 5–10 days at 70°F. Resents transplanting—use peat pots if starting indoors. Can also be propagated from softwood cuttings.

How to Grow Mallow

• Light: Full sun; tolerates light shade.
• Soil: Average to good, well-drained; enrich with compost.
• Water: Drought-tolerant but best with regular moisture.
• Fertilizer: Monthly balanced feed.
• Maintenance: Pinch tips at 12 inches for bushier growth. Deadhead for rebloom. Mulch to suppress weeds.

Bloom Time

Summer and fall.

Pests & Diseases

Infrequent.