Photo: Margaret Donald, CC BY-SA 2.0 (via Wikimedia Commons)

Sweet Bursaria

Bursaria spinosa

Also known as Native Blackthorn, Christmas Bush, Prickly Box, Bursaria

At a glance

Family

Pittosporaceae

Type

Evergreen spiny shrub or small tree

Parts used

Flowers and foliage (ornamental and ecological value; not established as a medicinal or culinary herb)

Size

Usually 2 to 5 meters, occasionally reaching 9 meters as a small tree

Bloom

Summer, roughly November through January in its native Australia

Habitat

Open forests, woodlands, coastal scrub, and heathy bushland across southeastern Australia

Acquisition

Grow

This plant in HerbSense

Key benefits

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Feeds native bees generously

Fragrant, honey-scented summer bloom

Tough, drought-hardy hedging shrub

Shelters rare native butterflies

Traditional uses

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Sweet Bursaria has never been a kitchen or apothecary herb, but it has long earned its keep in other ways. Its dense, spiny growth made it a natural boundary hedge and stock-deterrent shrub for early settlers, while its close-grained timber was valued by Aboriginal communities across its range for small tools and implements. Beekeepers have prized it for generations, since its cream, star-shaped flowers pour out a sweet, honeyed scent in midsummer and draw bees in from every direction. In more recent decades it has become famous for a different reason entirely, as the single plant an endangered Australian butterfly cannot live without.

How to grow & use it

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The full apothecary for Sweet Bursaria

Traditional remedies and step-by-step preparations, a complete growing guide, and how to harvest, dry, and store it, all unlocked with HerbLens Unlimited.

✦Remedies & preparations
✦ Growing guide
✦Harvest & storage

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Pairs well with

✦Correa
✦Grevillea
✦Westringia (Native Rosemary)

Substitutes

✦Westringia (Native Rosemary)
✦Lilly Pilly (Syzygium)

Choose it when

“For the corner of the garden that asks for almost nothing and gives back a whole summer's hum of bees and butterflies.”

Did you know?

In the woodlands around Melbourne, the rare Eltham Copper butterfly cannot complete its life cycle without Sweet Bursaria. Its caterpillars shelter by day in tunnels dug by small Notoncus ants at the base of the shrub, then climb up after dark to feed on its leaves, tended and protected by the very ants that share their home.

Safety

Sweet bursaria is not used as food or medicine; its branches are genuinely spiny, so wear gloves when pruning or handling cut stems.