Certified Seiridium Canker Treatment

Have you noticed branches on your Leyland cypress turning brown and dying back while the rest of the tree still looks healthy? Seiridium canker is a fungal disease that kills branches selectively, and most property owners mistake early symptoms for drought stress or winter damage until the disease has already spread significantly.

At All Natural Tree Experts, our ISA-certified arborists diagnose and manage Seiridium Cankers on residential and commercial properties through multiple seasons. We assess how far the disease has progressed, remove infected material using proper sanitation techniques, and put a management plan in place to give your trees the best chance of long-term survival.

Is your Leyland cypress showing dieback without an obvious cause? Call us today to get an accurate tree disease diagnosis before the disease spreads further.

Leyland Cypress is one of the most widely planted privacy screen trees in the country, largely because of how fast it grows and how dense its foliage becomes. Rapid growth produces bark tissue that is thinner and less resistant to fungal penetration than that of slower-growing species that develop naturally.

The way Leyland Cypress is typically planted compounds the problem significantly. Trees planted in tight rows create conditions where any disease that establishes in one tree has direct contact with its neighbors. Seiridium Canker spreads through rain splash and wind, which means a privacy screen planting is close to an ideal environment for this disease to move through quickly.

While Leyland Cypress carries the highest risk, Seiridium Canker affects several other Cypress and related species commonly found in residential landscapes:

Not sure if the species on your property is at risk? Book our insect and disease management to identify the host and assess disease presence.

Homeowners who attempt to manage Seiridium Canker without certified arborists often accelerate the very decline they are trying to stop.

When you hire arborists from All Natural Tree Experts, you eliminate these risks entirely. We bring the training that professional arborist tree disease treatment demands.

Some trees reach a point where management is no longer the solution. When that happens, we tell you clearly and move forward with a removal process that protects everything still standing on your property. Infected debris is handled and disposed of carefully so the disease does not get a second opportunity.

Losing a tree does not have to mean losing your privacy or your landscape. We help you choose naturally resistant species that suit your property, plant them with the right spacing from the start, and set up a watering schedule that gives your new trees a genuine chance to establish properly.