
Western bracken fern
One of the most widely distributed plants on earth, and it stands green in dry grass in August.
In brief
Pteridium aquilinum var. pubescens, Dennstaedtiaceae.
- Deciduous fern from a creeping rhizome
- Native, and near-worldwide in distribution
- Fronds spring to first frost
- Reproduces by spores, and by the rhizome
Where it grows
Open woodland, burns and grassland across most of the temperate world. The rhizome runs deep, which is how a patch survives a fire that takes everything above it.
When it comes up
Fronds unroll in spring and stand until the first hard frost takes them brown.
Spores
Spores on the underside of the pinnules, under a rolled leaf margin instead of a separate cover. The plant spreads far more by rhizome than by spore.
Here
Photographed on August 30, 2026, standing green in grass that had gone gold around it.
The frond is triangular and divided three times, on a single stiff stalk that branches into three near the top. Nothing else here has that shape.
It is not forage. Bracken carries a compound that is toxic to stock and carcinogenic, and the young fiddleheads carry the most of it.







































