A Tree Care Calendar for Grand Island and Niagara Falls: Pruning Timing, Oak Wilt and Ash Borer

Western New York weather is hard on trees: lake-effect snow, ice storms, wind off the river and the lake, saturated soil in spring and drought stress in August. Doing the right job at the right time of year keeps trees healthier and cuts the risk of a failure. Here is a simple calendar for Niagara Falls.

Winter (December to February)

• A good time to prune most trees. They are dormant, the branch structure is easy to see, and the ground is firm for equipment.
• After ice or heavy snow, look for cracked limbs, hung-up branches and leaning trunks. Do not shake a snow-loaded tree or try to knock ice off. You can snap branches and get hurt.
• Dead and hazardous wood can come out at any time of year.

Early spring (March to April)

• Finish dormant pruning of most species before buds break.
• Check for storm damage that was hidden by snow, and for soil heaving at the base of trees after the thaw.
• Watch for leaning: saturated, thawing soil is when large trees are most likely to tip.

Spring to early summer: the oak rule

Oak wilt (Wikipedia) is present in New York. It is spread by beetles that are drawn to fresh pruning wounds on oaks, and the beetles are active in spring and early summer. The standard advice is to avoid pruning oaks from about April through July unless it is an emergency, and to prune them in the cold months instead. If an oak is storm-damaged in that window, seal the wound promptly and ask a professional.

Summer (June to August)

• Water young and newly planted trees deeply and slowly in dry spells, not a quick daily sprinkle.
• Watch for drought stress: wilting, early leaf drop, scorched edges.
• Summer limb drop is real. Heavy, leafed-out canopies can shed large limbs on calm days, especially on older maples and ash. If a limb is cracked or has a dark split at the union, get it looked at.

Fall (September to November)

• A good time for an inspection visit before winter, once you can see the whole structure.
• Take out dead and declining trees before the first ice storm, not after.
• Remove leaves from the base of young trees and keep mulch a couple of inches back from the trunk.

Emerald ash borer

Emerald ash borer (see the Emerald Ash Borer Information Network) is established across Western New York, and ash trees that are not protected are being lost. Signs of an infested ash include a thinning crown that starts at the top, bark that is splitting or flaking in patches, D-shaped holes about the size of a pencil, and woodpecker activity that strips bark off the trunk. Dead ash becomes brittle quickly, which makes removal riskier and more costly the longer it waits. If you have an ash that is declining, plan its removal before it fails.

When to call a professional

• Anything over your roof, a service line or a neighbor’s property.
• Any tree with a cracked trunk, major deadwood, fungus at the base or a new lean.
• Before cutting anything you cannot reach safely from the ground.

We offer tree trimming and pruning, tree removal and 24/7 emergency response across Niagara Falls and the Niagara frontier. Call (716) 599-8733 for a free quote.