Broad-leaved paperbark (Melaleuca quinquenervia) – hardiness zones in USDA, RHS, Canadian & Australian systems

Medium to tall Australian wetland tree with distinctive thick papery white bark and creamy bottlebrush flower spikes.

Hardiness ratings

Broad-leaved paperbark hardiness across the four zone systems
System	Rating	Temperature range	How to read it
USDA hardiness zone	Zone 9–11	−6.7 °C to 10 °C	Plant tolerates down to this zone
RHS hardiness rating	H3	−5 °C to 1 °C	Plant needs at least this level of cold tolerance
Canadian plant hardiness zone	Zone 9	−1 °C and warmer	Plant tolerates down to this zone
Australian (ANBG) zone	Zone 4–7	0 °C and warmer	Plant tolerates down to this zone

Excellent forage for honeyeaters, lorikeets and native bees
A key tree of eastern Australian wetlands and swamps — tolerates seasonal flooding
WARNING: Highly invasive in the Florida Everglades, where it has displaced vast areas of native sawgrass marsh — DO NOT plant in the United States, listed as a Federal Noxious Weed
Within Australia it is best confined to the eastern wetland regions where it is native
Not reliably hardy outdoors in Canada — Canadian zone values shown represent the system maximum and do not imply garden cultivation north of the warmest coastal pockets.