Tiny bumps on bottom of apples

Asked August 8, 2020, 11:47 PM EDT

What might these tiny bumps be on the bottom of this apple? Several apples on the tree have this condition. Unfortunately, we do not know what variety this apple is.

Ramsey County Minnesota

2 Responses

I have sent your question off to one of the apple folks at Extension. Will let you know when I get an answer.

Paul W.

Replied August 11, 2020, 8:32 AM EDT

It is Cedar Apple Rust: https://ohioline.osu.edu/factsheet/plpath-fru-02 and

https://extension.umn.edu/plant-diseases/cedar-apple-rust#managing-rust-on-apples%2C-hawthorns%2C-and-other-plants-in-the-rosaceae-family-1172760

Paul W.

Replied August 12, 2020, 5:27 PM EDT