Why Are the Leaves Turning Brown on Holly Bushes?

Save

Holly plants have become classic symbols of the winter holiday season in America, with their dark green, pointy leaves and red berries. Holly bushes are generally very hardy plants with very few problems. One of the few conditions associated with holly plants is holly leaf spot disease, which causes discolored lesions to appear on the plant's leaves.

Descriptions

  • Holly leaf spot, also known as tar spot, is characterized by small, yellow spots that appear on leaves throughout the summer, according to the Tree Help website. As the disease progresses, spots grow and turn reddish brown. Eventually the spots turn black with a tar-like appearance.

Causes

  • Holly leaf spot is caused by a several different fungi, according to the University of Massachusetts. Some of the fungi types associated with holly leaf spot include Phacidium curtisii, Coniothyrium ilicinum and Phytophthora ilicis.

Long Term Damage

  • The University of Massachusetts states that holly leaf spot will cause no lasting damage to a holly plant. As the disease progresses, holly leaves may turn completely brown and fall off. However, the bush typically lives and will grow new leaves.

Prevention

  • There are steps gardeners can take to prevent fungus from infecting holly bushes and causing holly leaf spot. When spots first appear, treat the holly bush with a fungicide, recommends the Gardening Know How website. It is important to prevent the fungus from returning because repeated infections can cause the bush to die. Avoid composting with infected leaves, which causes the plants to become infected again.

Proper Care

  • The best course of action is to grow healthy holly plants, which are less likely to become infected with leaf spot fungi. The University of Massachusetts suggests providing holly plants with proper fertilization, monitoring pH levels in the soil, mulching garden beds and providing proper irrigation during dry seasons. Pruning the plants promotes sunlight penetration and air circulation.

References

  • Photo Credit Holly Leaves in Winter image by Jimmi Schneider from Fotolia.com
Promoted By Zergnet

Comments

You May Also Like

  • Holly Bush Leaf Disease

    The holly bush is one of the most popular landscaping plants in the United States, according to the University of Mississippi Extension...

  • My Holly Tree Is Losing Leaves

    Holly trees produce pointed leaves with serrated edges that stay on the tree all winter, accompanied by bright red berries. If leaves...

  • How to Get Rid of Brown Spots on Rose Leaves

    Roses are among the more difficult flowering bushes to grow, primarily because they are vulnerable to a wide range of plant diseases....

  • Types of Holly Leaves

    The foliage on a holly tree of shrub is one of its major selling points, with these ornamental leaves either evergreen or...

  • My Holly Has Yellow Leaves With Black Spots

    Holly plants range in size from shrubs of just over a foot to full-sized trees that reach 50 feet or higher, and...

  • Problems With Holly Bushes

    Holly bushes belong to the Ilex plant family, which has nearly 400 different varieties. The shrubs have prickly edged, dark-green, shiny foliage...

Related Searches

Check It Out

How to Make a Vertical Clay Pot Garden

M
Is DIY in your DNA? Become part of our maker community.
Submit Your Work!