Photinia leaf spot is a commonly encountered disease on photinia in commercial landscape settings. Systemic fungicides are the best management strategy but many are not labeled for use on the species. Do the risks of using an unapproved fungicide outweigh the benefits of treatment? Leaf spot on Photinia can be a serious problem. Internal leaves are affected first, then affected shoots stop growing. Eventually new growth is affected and the leaves fall off. The leaf may turn brown and die, or remain green but turn brown at the edges. Severely affected bushes have a noticeable lack of vigor especially in hot weather. Eventually they will die if not treated correctly. Systemic fungicides (those absorbed by the bush’s roots and distributed through the plant) can be used to treat photinia leaf spot. Systemic fungicides are designed to penetrate throughout your plants’ system – and this means that your plant’s leaves will be treated at the same time! As well as treating the top of your plant, these products also treat areas of your plant that are below ground, such as the roots. Ideally, you want the product to reach right into the heart of the plant (below ground) and completely surround it (above ground).

Systemic Fungicide For Photinia

Photinia is an evergreen shrub.

• Photinia is an evergreen shrub.
• It is grown for its flowers, spring color and red foliage.
• This shrub can suffer from leaf spot disease caused by Cercospora and Gloeocercospora fungi, which cause brown spots to appear on the leaves of the shrub. Powdery mildew can also affect photinias.

It is grown for its flowers, spring color, and red foliage. However, it is vulnerable to several diseases like leaf spot disease caused by Cercospora and Gloeocercospora fungi.

It is grown for its flowers, spring color and red foliage. However, it is vulnerable to several diseases like leaf spot disease caused by Cercospora and Gloeocercospora fungi. Leaf spot attacks the leaves of photinia causing them to turn yellow or brown in patches. The spots are initially small but later grow larger as the season progresses. Powdery mildew causes white or grayish patches on the upper surface of infected leaves due to which they appear powdery. This disease can be controlled by pruning off affected branches in early spring before symptoms appear

Powdery mildew can also affect photinias.

Powdery mildew is a common fungal disease that affects the leaves and shoots of photinia shrubs, and it can be controlled by using systemic fungicides. This type of powdery mildew is caused by the fungus Podosphaera leucotricha. It’s more common in warm and humid climates than in cooler temperatures.

Planting resistant cultivars and using fungicides helps in controlling these diseases.

If you’re growing a plant susceptible to powdery mildew or anthracnose, consider planting a resistant cultivar. Resistant photinias are available from nurseries; they’re often less than half the size of their susceptible cousins and are sometimes more ornamental than their disease-prone counterparts.

If you have an established photinia that’s showing signs of disease, be sure to get in there with systemic fungicide as soon as possible. If you can’t treat your plants before summer arrives—when fungal spores are most active—don’t panic: these diseases aren’t fatal unless left untreated for an extended period of time.

Systemic fungicides can be used to protect against fungal leaf spot and powdery mildew diseases in photinia shrubs.

Systemic fungicides are chemicals that are absorbed by the plant and distributed throughout its tissues. Systemic fungicide applications are effective against fungal leaf spot and powdery mildew diseases in photinia shrubs.

Application of systemic fungicides must be made through the soil to ensure that they reach the roots where they can be absorbed by the plant.