Jacqueline Hillier Elm (Ulmus × hollandica 'Jacqueline Hillier')
 
A rare, dwarf cultivar of elm, Jacqueline Hillier is prized for its tight, zig-zagging branch structure, tiny textured leaves, and naturally compact, slow-growing form. This one stands out among elms for its refined structure and minimal maintenance needs, making it a strong candidate for bonsai and small-scale landscape use.
 
As a Bonsai:
With its fine twigging, small leaves, and dense branching, Jacqueline Hillier is exceptionally well-suited for bonsai, especially for those looking to work with deciduous material that naturally stays compact. It tolerates pruning well and builds ramification quickly. Best suited to informal upright or broom-style bonsai.
 
📢 This is a cold-hardy species—it requires a winter dormancy and should be kept outside year-round. In locations with extreme cold, we recommend placing it on the ground, mulching around the pot, and protecting it from wind.
 
Plant Features:
Hardiness Zone: 5–7 (cold-hardy and requires winter dormancy)
Growth Habit: Dwarf, densely branched, with a naturally rounded form
Mature Size: 8–10 ft tall and wide in the landscape; much smaller in bonsai
Foliage: Small, deeply veined, serrated green leaves
Trunk & Bark: Bark becomes fissured and textured with age
Sun Requirements: Full sun to partial shade
Soil Type: Well-draining loamy soil; tolerates a range of conditions
Water Needs: Moderate; prefers regular watering but doesn't tolerate soggy roots
Pests/Disease: Generally resistant; not known to be susceptible to Dutch elm disease
Special Features: Naturally dwarf, rare cultivar, excellent branching and leaf size for bonsai