Elm Leaf Beetle Treatment Southern Highlands
Do you live in the SOUTHERN HIGHLANDS?
You may not have heard about the Elm Leaf Beetle.
Two mature elm leaf beetles 5-6mm long, biting holes in an Elm leaf resulting in a “shot-hole” appearance
URGENT NOTICE FOR THE 2019/2020 GROWTH SEASON
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In July 2017, starting in Mittagong, I found it had spread to Bowral, High Range, Burradoo, Moss Vale, Sutton Forest, Exeter, Bundanoon and Berrima and had attacked every Elm I stopped to look at. Fitzroy Falls, Kangaloon and Robertson were the same. Judging by the level of foliage damage, it is in its second or third season in the Highlands. This means there is a significant build up of the beetle population sufficient enough to defoliate a 50 year old Golden Elm, by February, having started in October in one growth season. The only reason the Grand English Elms we love and Golden Elms weren’t seriously attacked by Christmas was the late zero degree frost in October.
But hoping there’s a frost is hardly a reason not to protect your elm against the inevitable. We can provide an effective level of protection of your tree for up to 3 growth seasons or part thereof. Last spring(2017), the Highland Elms, were lucky, but the beetle numbers have been increasing since then, as they do, because ELB cannot be eradicated, and you will see shot holes in the leaves then the larvae causing leaf skeletonising till late March -April. In fact, the beetles will hibernate and emerge in October typically; and the cycle continues.
Repeated defoliation results in terminal bud dieback and loss of the Canopy curvature with resultant tertiary (branchlet) dieback. If prolonged, sporadic dieback of primary and secondary laterals will occur, because photosynthesis will be repeatedly interrupted and photosynthate-storage will be reduced ; ultimately major laterals i.e. the scaffold branches of the tree will go into decline and die. contact elmconsultants.com.au if you would like to find out more. We service the Southern Highlands, and across to the Central Tablelands.
Sooner or later, most of the Elms in the Highlands will be decimated. Every leaf turns brown, curls and drops.
Proof of Treatment
St Peters Boys school Adelaide
Classic weeping elm
PROOF OF TREATMENT SUMMER 2015 ON 3 GOLDEN ELM CULTIVARS
1ST Cultiver 20 years old, injected mid summer of 2015
Same tree, first cultiver, one year later, summer 2016
Below, a second cultivar, front view one year after treatment, in the summer 2015
Below, same second cultivar, reverse view, 2 years later in the summer of 2017
Below, second cultivar, 35 years old (different tree) one year after treatment. “I couldn’t resist
putting this photo in,
it’s a beautiful specimen
3rd Cultivar 50 years old. Late Summer 2016
When are the Beetles most active and what damage do they make??
POST- HIBERNATION, EMERGENCE IN SPRING.
DEATH FOR BREAKFAST
Stem injection ONLY
What we do
Why we wont spray
Ladybirds and Assassin bugs help the natural predators colonise your garden.
WHAT YOU CAN DO
(A) Interrupt the life cycle
1. 3 DAY DUCT tape
DUCT tape is the safest method. CHANGE IT EVERY 3 DAYS.
Sticky pads can melt , running down trunk and blocking the lenticels of
the bark preventing the bark from breathing
2.Clear all litter from around each tree for 500mm and keep as bare
3.So when pupae settle there you sweep them up and drop them into
a bucket of water
(B) Irrigation particularly in hot dry climates like Adelaide
1. Water heavily before and after for a couple of weeks each time
your tree is irrigated then once per week through summer in hot
Damage from injectors methods to avoid
I don’t leave plastic plugs in your trees. I only drill a 3.5 mm hole using a sterile drill bit, a sterile injector, and a sterile filler nozzle. The images below show what should NOT be done.
Incredible service from Guy, very happy
We were so lucky to have Guy notice our Elm trees were in danger of not surviving. we hope all the work he has put into the injections work well.
01/09/2018Valerie de Burca
Guy is an absolute genius when it comes to pest control. Seriously talk to the man for just a few minutes and you’ll see that he knows what he’s doing and he cares. Extremely ethical and knowledgeable. Do yourself a favour and just have a chat.
Second year after treatment, some damage by beetles in last month to small section of one branch, only apparent from close range. Infestation probably from nearby tree which is badly damaged. No signs of eggs or caterpillars.
The damage, from Elm Leaf Beatle , to our 2 elms has been increasing each year and was getting to a state where we believed It would really impact the trees. After consultation and treatment by Guy during winter , this Springs new growth has shown very minor damage on the lower foliage on one tree and virtually no evidence of attack on the other. These are 30 plus year old trees and to us well worth saving , so will keep in touch with Guy for further advice and treatment if necessary.