4 Common Tree Diseases in New Hampshire

The beauty of New Hampshire’s forest landscape is undeniable. With over 100 native species in the state, it is understandable why the locals are proud of their natural surroundings. However, tree diseases are also common with the abundance of native species. Luckily, tree health care professionals in Hooksett, NH, are more than up to the task of taking care of these majestic plants. 

Collins Tree Service, Inc., is the premier tree care service in New Hampshire, serving the community of Hooksett and nearby counties. We are dedicated to taking care of New Hampshire’s trees in both forest and landscape settings. We guarantee high-quality, affordable, and reliable tree care services for all our customers.

4 Common Tree Diseases in New Hampshire Trees

Beech Leaf Disease (BLD)

Beech leaf disease is a foliar disease that is common in various beech tree species, namely American beech, Oriental beech, and European beech. The disease is caused by the nematode Litylenchus crenatae.

It is commonly found in trees while in their younger life cycle. The nematode feeds on bud breaks on new leaves, causing a dark brown band at the base. Over time, the leaves wither and turn leathery, destroying the capacity for photosynthesis.

Trees infected with BLD are slow to show symptoms, typically taking between 3-6 years to develop recognizable signs. Unfortunately, there is no treatment against this disease other than keeping trees healthy enough to fight it off.

White Pine Blister Rust

White pine blister rust is a non-native disease caused by the fungus Cronartium ribicola. It commonly infects five-pine needles but is highly contagious to all North American white pine species such whitebark pine, southwestern white pine, and limber pine.

The disease is usually seen during summer and fall, with infected trees showing yellow leaf spots and early defoliation. When the disease becomes too severe, whole branches can die off and become bright red. Diamond-shaped cankers can also be seen on the bark. These cankers are orange and ooze resin when opened.

Currently, the Forest Health Protection Agency is trying to develop resistant varieties to white pine blister rust.

Caliciopsis Pine Canker

First reported in New Hampster in 1997, Caliciopsis pine canker has since spread to other states, including New York and Virginia. It is commonly found in white pine (Pinos strobus) and red pine (Pinos resinosus) trees, although it can also infect other species in the Pinos genus.

Caliciopsis pine canker diseases can be caused by two different fungi species, namely Fusarium circinatum and Caliciopsis pinea. The cankers usually appear as elongated depressions on the bark, although they can also manifest as extremely thick and rough growth in some cases. The fruiting bodies appear as black, hair-like structures that mature during late winter and spring.

Oak Wilt

Another fungal disease, oak wilt is caused by Certocystis fagacearum. This disease is a commercially important one as it is one of the most virulent and fast-acting tree diseases. Red oaks are the most susceptible species, and infected trees can die in as little as a few weeks from infection.

This disease attacks the root of oak trees, causing them to fuse together and prevent proper nutrient and water absorption. It can also be spread by beetles that attack the roots of the tree, such as the Asian longhorn beetle.

While the disease has not been recorded in New Hampshire yet, there have been recorded outbreaks in New York. Given the virulence of oak wilt, officials in New Hampshire are careful to prevent the disease from breaking out in the state.

Protect Your Conifer Trees

Being able to identify the signs and symptoms of tree diseases early is the best way to protect your trees in and around Hooksett, NH. Learn more about insects and disease control by reaching out to our team at Collins Tree Service, Inc., today at 603-485-4761.

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