Description
Contorted mulberry—often sold as Unryu mulberry—is valued not for harvest, but for structure. Its branches twist, spiral, and contort as they grow, creating a living sculpture that stands out in every season, especially once leaves drop and the framework is fully revealed.
In spring, trees flower heavily with inconspicuous catkins, but despite abundant flowering, fruit set is typically absent or extremely sparse. This variety is grown primarily for its ornamental character, not for edible production, making it well suited for landscapes where form matters more than yield.
As a landscape tree, contorted mulberry is vigorous and adaptable, tolerating a wide range of soils and growing conditions. It can be allowed to develop into a large, expressive specimen or pruned to emphasize its twisting structure and manage size.
Overview
- Highly ornamental mulberry with twisted, contorted branches
- Strong winter interest once leaves drop
- Flowers heavily in spring
- Typically fruitless or very sparsely fruiting
- Grown primarily for form and visual impact
Growing Details
Latin Name: Morus alba ’Unryu’
Site and Soil: 1/2 day to full day of sun; adaptable to most well-drained soils
Hardiness: USDA Zone 5–9
Rootstock: Russian mulberry (Morus alba tatarica)
Bearing Age: Grown for ornamental form
Size at Maturity: Typically 15–25 ft tall and wide without pruning- easily kept smaller
Flowering: Spring; inconspicuous catkins (not showy)
Fruiting: Typically fruitless or very sparse; grown primarily for its contorted form (fruiting is not reliable)
Pests & Diseases: Generally low-maintenance with few serious issues
Additional Notes
- Grower’s Insight: After growing hundreds of contorted mulberries, we’ve never observed reliable fruit set—despite abundant flowering. This aligns with how the variety is used in designed landscapes and with university extensions publications.
- Regional Insight: Performs well across a wide range of climates, including the Pacific Northwest, where its structure and winter form are especially appreciated.
- Best showcased where branch structure can be appreciated year-round.
- Pruning can be used to highlight contortion and manage overall size.
- Explore more mulberries in our collection: Mulberry Trees
