Tulip tree (Yellow poplar) (Liriodendron tulipifera) – hardiness zones in USDA, RHS, Canadian & Australian systems

Fast-growing tall eastern North American tree with distinctive four-lobed leaves and tulip-shaped greenish-orange flowers high in the canopy.

Hardiness ratings

Tulip tree (Yellow poplar) hardiness across the four zone systems
System	Rating	Temperature range	How to read it
USDA hardiness zone	Zone 4–9	−34.4 °C to −1.1 °C	Plant tolerates down to this zone
RHS hardiness rating	H6	−20 °C to −15 °C	Plant needs at least this level of cold tolerance
Canadian plant hardiness zone	Zone 4–8	−29 °C to −1 °C	Plant tolerates down to this zone
Australian (ANBG) zone	Zone 2–5	−10 °C to 10 °C	Plant tolerates down to this zone

Larval host for the eastern tiger swallowtail and tulip-tree beauty moth
Tulip-shaped flowers signal late spring — easy to miss as they are usually high overhead
One of the most important honey trees in the eastern United States
Very fast growing — needs space, not for small gardens