Elm Leaf Beetle damage treatment control

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Control Of Elm Leaf Beetle (Pyrrhalta luteola)

Treetec provides Elm Leaf Beetle treatment

Call Mark on 0419 349 268
Melbourne Victoria Australia

The most appropriate control method depends on the season, degree of insect infestation, tree size, tree location / siting and philosophy.

Elm Leaf Beetle infestation can defoliate a tree, if this happens continually the tree may die. Other factors such as drought, poor pruning / lopping or soil compaction will contribute to a decline in tree health.

Currently the most effective control measures for Elm Beetle involve chemical application. We recommend soil injection in most instances though we provide a range of alternatives.

Visit our site for a full run down on Elm Leaf Beetle treatments both from us or DIY and the advantages and disadvantages of those treatments.

Elm Leaf Beetle further detail
To manage Elm Beetle infestation you need to understand a little about the Elm Leaf Beetle life cycle.

The Elm Beetles spend the cooler months in sheltered places such as wood piles, house eaves, cars & under bark. As trees come into leaf the Elm beetle emerges, moves onto the new growth and begins to feed; they damage the leaves by eating small holes that look as though someone let off a shotgun through the tree.

About November the Elm leaf beetles lay small yellow eggs usually on the underside of the leaf, about 8 days later the eggs will hatch larvae (looks like a tiny shaved caterpillar). The Elm beetle larvae will also feed on the leaf but they eat the green material leaving a skeletonised appearance, they can trash a tree in a couple of weeks. The larvae will go through a series of instars and moults where they progressively get larger (and consequently defoliate more of the host tree). The mature larvae will then migrate down the trunk* and pupate into mature Elm leaf beetles, you may see this at Christmas or soon after. In southern Victoria there are usually 1 or 2 cycles per year

* Many of the Elm Beetle larvae will fall off the tree rather than use the trunk.

Recommended treatment
Unfortunately eradication of the pest is unlikely in the short term so the best approach is to look at long term management of your tree using an Integrated Pest Management (IPM) system. This involves planning, monitoring, taking action and evaluating the outcome.

Generally it comes down to looking after your trees health as best you can and a soil injection application each 3 years (we guarantee success for at least 2).

Happy to help with advice or a quote over the phone or email.

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