Montessori's picture

Cause for concern?

Observed: 15th March 2013 By: Montessori

Lukas was a little bit concerned about these spots on these leaves, does anyone know whether it is anything to worry about?

Species interactions

No interactions present.

Species with which Violet Bramble Rust (Phragmidium) interacts


chrisbrooks's picture

ID comment

It looks like a species of Bramble Rust, which is very common.

markwilson's picture


The small spots are the reproductive structures of a rust fungus. They will slightly weaken the plant but do not usually kill. Most rusts are specific to one (or a few) host species and unless you/ your naeighbours grow blackberries commercially it is very unlikely to affcet other plants. On an earlier post in the fungus section today I put a link to a "rust" site

Mark Wilson