Lavatera trimestris. Stunning the garden, these snowy white mallows make excellent cut flowers. Gleaming white, massive 10cm (4") wide flowers glow in the moonlight. Aptly named Mont Blanc for its profuse blooms on a compact plant growing up to 90cm (36") tall earns this fast growing annual a place in the flower bed, front and centre. Mont Blanc Lavatera seeds are easy to grow, very hardy, and bloom from mid summer to frost. This fast growing plant works well in containers on their own, but even better in mass plantings. Try growing some at the end of your patio, where they can be enjoyed at night in the moonlight.
Annual Lavatera is also known as Mallow or Annual Tree Mallow. It is an easy-to-grow annual that blooms in the first year. The Latin species name trimestris translates as "three months," referring to the plant's quick life cycle. Continue reading below for tips on how to grow Lavatera from seed.
Season & Zone
Exposure: Full sun
Start indoors in peat or coir pots 6-8 weeks before the last frost, or direct sow outdoors in early spring when light frost is still possible. If starting indoors, maintain a soil temperature of 21°C (70°F). Seeds will sprout in 15-20 days. Transplant after last frost, being careful not to disrupt the roots. If direct sowing, repeat every 2 weeks until the nights get warmer for a longer bloom time.
Barely cover the seeds. Transplant or thin to 30-45cm (12-18″) apart.
Lavatera dislikes transplanting, so do not try to move them from their permanent planting site. Grow in moist, average soil. Water well and deadhead regularly. Avoid feeding plants, as Lavatera grown in rich soil will have lush foliage and fewer flowers. It may self-sow.