burning barberry

Question

Five barberry against a brown brick building. They get full morning and early afternoon sun-complete shade after that. They appear to be burning but I’m not sure. What can I do to determine if they are burning or if something else is happening?

Answer 1

The first thing is to consider how long the plants have had this problem. If they'v been in for several years, and the burn appearance has always been there, that's a good vote for burn. If the problem just started, it's more likely to be a disease. You can take some leaf samples to an Extension Service for analysis. This article will tell you more: https://www.gardeningknowhow.com/garden-how-to/info/what-is-extension-service.htm