Q: This oak was planted a few years ago. Initially it was diagnosed with sun scald. Despite measures to try to help it, it just seems to be going downhill. When it budded out this spring there was new ...

Galls on oak leaves are harmless growths caused by specific insects. They have different shapes depending on the insect species causing the gall.

Agriculture officials in Marin County are alerting property owners and arborists to be on the lookout for a tiny invasive ...

Agriculture officials in Marin County are alerting property owners to lookout for a tiny invasive beetle that attacks oak ...