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Tree · Fabaceae Draft — unreviewed

Skyline thornless honeylocust

Gleditsia triacanthos var. inermis‘Skyline’

Also called thornless honeylocust.

Thornless, largely seedless honeylocust with a broad pyramidal crown. Fine leaflets cast light, filtered shade that lets lawn and perennials grow beneath.

Size over time

Typical landscape size 12–15 m (39–49 ft) tall and 9–12 m (30–39 ft) wide; fast growth, about 15 years to maturity. Intermediate sizes use the planner’s growth curve (k = 0.45) from the BB-2in install size.

051015mPlanting3.4 × 1.5 mYear 310.9 × 8.2 mYear 1013.4 × 10.4 mMature13.5 × 10.5 m

Design notes

  • Tiny leaflets drop and disappear into lawns — little raking.
  • Widely planted; mix with other species to avoid monoculture pest outbreaks (plant bug, webworm).

Regions

Native range: Central and eastern U.S. (species).

Native to these OpenLandscape3D pilot regions:

Native status describes where the species occurs naturally. It is not a promise that it suits a particular garden; site conditions decide that.

Related plants

Plan with Skyline thornless honeylocust

Place it in a design, check it against your zone, light and moisture, and see it at year three and year ten.