Red tip photinia is a high maintenance species due to the rigorous fungicide program that is needed to keep the leaves on the plant.
A fungus called Entomosporium maculatum is what causes leaf spot on photinia. This disease commonly occurs on the southern landscape plant, red tip photinia.
To minimize the effects of this disease, start applications of fungicide at bud break and repeat until the majority of leaves have matured.
Share about your garden joys and woes? Beautiful flowering alternatives include Escallonia, Mock-orange, Weigela, Camellia and a host of other flowering-bearing hedge shrubs. This will increase light and airflow around the shrub and decrease the conditions in which the fungus thrives.
Home; Arborist Advice; Photinia leaf spot disease is caused by a fungal pathogen. This may require at least three applications in the spring and three applications from mid-October to late November, when the cooler temperatures and rainfall lead to more fungal activity. However, in moist climates with very wet spring and fall seasons, it may prove fatal to your photinia hedge. The production of spores can be seen in the black blotches inside the circular damage. She and her not-a-fawn-anymore have eaten all of the leaves on my Photinia bushes! Photinia shrubs sometimes contract a disease called Photinia leaf spot or Photinia black spot. Find more gardening information on Gardening Know How: Keep up to date with all that's happening in and around the garden. In a matter of days, the spots enlarge and eventually become dark purplish circles surrounding gray, dying tissue. First and foremost, rake up all fallen leaves, and if the shrub is already infected, remove all affected leaves and branches.
Your email address will not be published. This particular strand of leaf spot, Entomosporium, can directly infect other members of the Rosaceae family such as: A favorite shrub that resists leaf spot is holly, as does its North-American endemic variant yaupon. Plant photinia in full sun and provide good air circulation.
Do not repeatedly trim endangered shrubs to encourage the new red growth. View our. It is a microscopic fungus that overwinters on twigs and leaves that have fallen on the ground. Sign up to get all the latest gardening tips! Photinia facts to know Name – Photinia x fraseri Family – Rosaceae Height –…, When should a hedge be trimmed, what is the right timing, and how should one go about it best?
Diseases like this one tend to spread from the bottom to the top of the infected plant because the spores can’t travel that far. A mixed hedge will be more resistant to photinia bush diseases if the susceptible shrubs are placed farther apart. These spores are released into the air in late winter or early spring where they land on any nearby photinia bush.
Photinias are large shrubs that grow well in the eastern portion of the United States. The red tips of new growth that made these shrubs so popular are particularly vulnerable to the ravages of the photinia bush diseases and over the years, photinia leaf spot has destroyed countless shrubs. All Rights Reserved. This disease commonly occurs on the southern landscape plant, red tip photinia. Avoid overhead irrigation that keeps leaves wet for long periods of time.
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Credits for images shared to Nature & Garden (all edits by Gaspard Lorthiois): Mary Ann Hansen, VA Polytechnic Institute & State University, Pruning Photinia Shrubs: How And When To Prune A Red Tip Photinia, Red Tip Photinia Fertilizer: How And When Should I Feed My Red Tip Photinia, Herb Bundle Bouquet – How To Make An Herbal Bouquet, Herbal Vinegar Recipes – How To Infuse Vinegar With Herbs, Fruit Flavored Vinegar Recipes – Learn About Flavoring Vinegar With Fruit, Growing Black Eyed Susan Vines: How To Propagate A Black Eyed Susan Vine, Cocoa Shell Mulch: Tips For Using Cocoa Hulls In The Garden, Growing Pineapple Lilies – Learn About Pineapple Lilies And Their Care, Brown Spot On Peach Fruit: Learn About Peach Scab Treatment, Pressing Flowers: Bringing The Outdoors In Year Round, Halloween In The Garden: When Plants Become Dormant For Winter, Haunted Houseplants – Top Houseplants For Halloween, Giant Pumpkin Growing: Life Lessons Through Gardening. This inability to move any great distance is also the reason photinia leaf spot may attack a shrub in one area of the yard while another area remains untouched. Chlorothalonil, propiconazole, and myclobutanil are the effective ingredients to look for in available fungicides. First signs of infection appear near the ground on the lower levels of the tree. So well, in fact, they soon became one of the most popular hedge plants in the South. It starts off by creating spots of light swelling on leaves and then the color changes to brown and dark red, and ultimately to black or gray. Sometimes this happens before the leaf is even fully mature (still red). So, I've been tolerating the pair of deer who visit us, which is probably the wrong thing to do. Photinia leaf spot disease is caused by a fungal pathogen. In severe cases, spots grow until the entire leaf is weakened and falls off. As a result of this season-long disease, photinia hedges can become thin and scraggly due to premature leaf drop of infected leaves.