Grapefruit tree - Ask an Expert
Based on the symptoms you described, my best educated guess is that you are dealing with the sooty mold fungus which explains why the nursery personnel recommended that you spray with soap. While that should be effective against the mold fungus, it does nothing to kill the sucking insects that are the main cause of the problem.
What is the life expectancy of a hybrid cottonwood tree (non …
The lifespan of any tree can vary enormously depending on environmental conditions, soil type, planting practice, etc... However, assuming everything is in the tree's favor, a cottonwood lives an average of 40 - 50 year. They are fast growing, weak limbed trees that …
Need to ID a fungus at the base of my white oak tree
From your photos it looks like it may be a fungus decaying in the mulch around the tree trunk. As long as the fungus is in the mulch it is ok. The mulch may have wood in it causing it to breakdown. If this is not what you are noticing, or the fungus is on the trunk, you can send additional photos.
Fungus on Western Red Cedar? - Ask an Expert
Fungus on Western Red Cedar? Asked January 12, 2015, 5:12 PM EST A row of Western Red Cedars appear to be infected with a fungus or other disease as the needles have fallen and some branches are dead.
Cherry Maple fungus - Ask an Expert
Tree is approximatly 13 years old. It is on the North side in partial shade. No pesticides or fertilzer have been used. It has a relatively thin layer of old mulch which was not replaced this year. It has been a hardy tree throughout its life with wonderful colors during the seasonal change. Is there anything I should do to eliminate this fungus.
Sick fig tree - Ask an Expert
Second, I see leaves and mulch over the crown of the fig tree. The crown is where the 1st main roots meet the trunk of the tree. If this is covered they your tree will go through a slow death--like smothering a tree. Finally, the Chlorine could certainly stress/kill your fig tree according to how much got to the tree.
diseased tree - Ask an Expert
Photo 2 suggests that the willow has also been damaged or killed back by canker (fungus) diseases of the trunk and branches. Overall, this tree is probably not worth keeping, because:-willows are not valuable trees-they require lots of water, growing season and during dry spells in winter-they are prone to canker diseases, borers and aphid ...
Tree Riddled with Holes - Ask an Expert
The tree in question has severe sapsucker damage. These birds, related to woodpeckers, will peck a series of holes, usually in a pattern, in order to cause the tree to bleed sap. The bleeding sap will attract insects and the sapsuckers will return to feed on the insects. They also derive sugar from the sap as they peck the holes.
Plum tree blossoms turn brown. - Ask an Expert
From your description it sounds like brown rot. This is the information on brown rot - a fungus. Brown rot blossom blight is a common and destructive disease of all stone fruits including flowering cherry and plum as well as their fruit bearing relatives. Flowering and weeping cherry, flowering plum, fruit trees; apricot, cherry, peach, and plum.
Strange growth on pine tree branches - Ask an Expert
Your trees – Norway spruces – are hosting a composite organism called lichen (a combination of an algae and a fungus); these are important and generally beneficial organisms in nature. Lichens are slow-growing and long-lived, and often grow on tree trunks, branches, and twigs, because bark provides a stable place for them to reside and ...