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What are the balls on my cedar tree?

What are the balls on my cedar tree?

Moist to the touch and about the size of a golf ball, these ornaments adorning the cedars are actually fungi. Over the course of the summer the fungus matures and eventually spores are blown back to the cedar trees to overwinter as small galls. The fungus does not permanently harm the eastern red cedar trees.

How do I get rid of cedar galls?

Galls may be removed from trees before reaching the telia stage by pruning them from the cedar trees in late winter. Removal of any nearby red cedar (usually within a two-mile radius) and the use of resistant apple varieties can also help.

What are cedar cones?

One of the easiest ways to identify a cedar is by checking out its cones. All members of the genus Cedrus produce upright, barrel-shaped cones. Male cones are smaller and don’t stay on the tree for very long. Female cones, on the other hand, are quite large and stay on the tree until the seeds are ripe.

Is cedar-apple rust harmful to cedar trees?

Cedar-apple rust and similar rusts are incited by several species of the fungal genus Gymnosporangium. On the native Eastern red cedar and ornamental cedar, Juniperus spp., cedar-apple rust is not known to be extremely harmful. However, some ornamental cedar plants are covered with fungal galls and become unattractive.

How do you treat cedar rust?

If you see the lesions on the apple leaves or fruit, it is too late to control the fungus. In that case, you should focus on purging infected leaves and fruit from around your tree. Spraying apple trees with copper can be done to treat cedar apple rust and prevent other fungal infections.

How do you treat cedar-apple rust on cedar trees?


  1. Fungicides with the active ingredient Myclobutanil are most effective in preventing rust.
  2. Fungicides are only effective if applied before leaf spots or fruit infection appear.
  3. Spray trees and shrubs when flower buds first emerge until spring weather becomes consistently warm and dry.
  4. Monitor nearby junipers.

Do cedar trees get disease?

Cedar-apple rust is a fungal disease found on cedar and apple trees, and affects each host differently. Cedar-apple rust on eastern redcedar. Photo by Patrick Voyle. If you look carefully, cedar-apple rust has a hyphenated name.

What does a real cedar tree look like?

Cedars have bluish-green needles, growing in groups along woody branches. Another identification feature of true cedar trees is their large, barrel-like cones that grow upward on branches rather than dangle. A mature cedar tree has reddish-brown bark with long scales that are easily peeled.

What does a cedar cone look like?

Their cones are small (about 1/4-inch long) with a blue or purplish color that turns reddish-brown in the fall. Needles are thin, pointed and blue-green, and foliage is scaly and fan shaped.

How do you get rid of cedar apple rust on cedar trees?

How do I get rid of cedar apple rust?

What causes rust on cedar trees?

Cedar apple rust is caused by Gymnosporangium juniperi-virginianae, a fungus that needs both a cypress-related evergreen plant and an apple-related plant to complete its lifecycle. Incidence and severity of the disease varies from year to year and is more prevalent in very wet springs and very humid summers.