Maple
Ryusen
Acer palmatum
A groundbreaking and completely unique cultivar in the Japanese Maple world. 'Ryusen' breaks all traditional design rules by combining a strictly pendulous, vertical weeping habit with standard star-shaped palmate foliage rather than cut-leaf dissectum traits. The branches cascade straight down parallel to the trunk like flowing water. Foliage emerges a brilliant chartreuse-green in spring, matures to a rich, glossy emerald green in summer, and delivers an outstanding autumn explosion of blazing orange, bright gold, and uniform crimson red.
Growing Specifications
- Height
- 6-10 feet (Completely dependent on the height of the stake or graft configuration)
- Spread
- 4-6 feet (Maintains a narrow, columnar weeping profile over time)
- Watering
- Moderate; requires regular deep watering but highly resilient once established
- Light
- Full Sun to Partial Shade
- Heat Tolerance
- Elite; handles high southern ambient sun and heat with exceptional durability
- Growth Rate
- Fast / Vigorous (Can push pendulous trailing shoots 3-6 feet in a single season)
- Soil Requirement
- Rich, highly porous, organically loose, sharply well-draining, slightly acidic
North Texas Micro-climate Notes
Expert Curated Selection. This is one of the single most sun-tough and heat-durable weeping maples available for Southern landscapes. Its thick palmate leaf cuticle prevents the cell-wall collapse and severe crispy tip-scorch that plagues traditional weeping laceleaf maples. In North Texas, it thrives beautifully in full morning sun to tighten its node spacing, though afternoon protection from the brutal 3 PM southwest winds will keep its fall transition absolutely flawless.
History & Lineage
- INTRODUCED BY
- Kazuhara Kobayashi (Kobayashi Nursery)
- HISTORY
- Discovered as a historic, one-in-a-million chance seedling mutation in 1990 by Kazuhara Kobayashi at the renowned Kobayashi Nursery in Saitama Prefecture, Japan. Originally evaluated and registered under the name 'Ryu sei' (Falling Star), it was patented and officially introduced to Western commerce in 2008, quickly becoming a global sensation for its unmatched architectural versatility.
Care Instructions
Must be planted in high-porosity soil mixtures with excellent drainage to prevent root stagnation. Use flexible garden ties to securely train a primary vertical leader up a sturdy structural stake until it reaches your desired height clearance, then let the lateral canopy weep freely. Provide deep-soaking irrigation cycles throughout summer droughts.
Landscape Usage
Sensational when trained up to arch gracefully over wooden entry arbors, allowed to spill down steep stone retaining walls, grouped into narrow vertical garden zones, or grown as a 'thriller-spiller' in tall estate courtyard pots.
Fun Fact
The trade name 'Ryusen' translates directly to 'Flowing Waters' or 'Dragon Spring', which perfectly matches its growth pattern. Because its genetics force it to grow strictly downward, it has zero vertical drive on its own; if it isn't staked upward by a grower, it will crawl along the ground to form a dense, lush green structural ground cover trailing across rocks.
Awards
Highly acclaimed across global landscape architect syndicates for introducing a radical new structural form to the Acer palmatum species
