Tree diseases

  • All resources in tree diseases 256
  • Environmental factors and damage 117
  • Fertilization and soil management 3
  • General information 9
  • Insects and pests 122
  • Plant health care 171
  • Tree management and consulting 18

This tree could be suffering from multiple issues. The best way to assess this tree with regard to health, is to set...

There are many factors that go into a proper diagnosis of potential biological or environmental conditions which can...

Yellowing of the leaves and leaf drop could be symptoms of heat stress, aphids, psyllids, or nitrogen deficiency. If...

What you are describing on the autumn blaze maple are likely two different pests. The bumps on the leaves are galls...

Collar lesions on maples are often the result of Phytophthora infections, particularly those with soil or heavy mulch...

What you are describing is most likely squirrels. Their teeth make very clean angular cuts and spring is the time of...

Japanese maples have a lot of variation based on their cultivar. As a general rule, Japanese maples change to a more...

It is not uncommon for Tulip Poplar trees to shed leaves and small branches (1 to 3 inches in diameter on mature...

Your intuition is correct on two points: it is indeed a type of mold, and it is indeed getting too much water. Your...

We would have to see and possibly test the tree. It sounds like you may have a fungal problem, possibly below and...