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Category Archives: Arboriculture
July 3, The Friday Report
What a gorgeous week to be living in ONtario! If can you, get outside this weekend and participate in one of the many butterfly/dragonfly/bioblitz counts going on. A full list of events can be found at Ontario Nature. Plant Phenology … Continue reading
Spruce Sawfly is Doing It’s Thing
Take a quick scan of the new growth on spruce, especially Colorado spruce (Picea pungens). Look for straw-like needles that are withering….and the disappearance of needles all together. This is very typical damage of Yellow Headed Spruce Sawfly (Pikonema alaskensis).
Posted in Arboriculture, Insects, IPM
Tagged gypsy moth, Jen Llewellyn, spruce sawfly, yellow headed spruce sawfly
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Flower Buds and a Few Thugs
We’ve had such a cool spring that when we did start to get some “heat” a few weeks ago, it hastened the development of some of our earliest flowering plants. Instead of there being distinct periods of bloom, many of … Continue reading
Is Your Spruce Tree Dropping Twigs?
This time of year arborists and landscapers often get calls from homeowners worried about all the twigs they find scattered on the ground below their spruce twigs. It’s just the current season’s growth that is affected and although it’s been … Continue reading
Posted in animal injury, Arboriculture, IPM, landscape
Tagged ipm on landscape trees, Jen Llewellyn, squirrel damage on spruce
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Listen, I know it’s raining. And by now you are thinking that you just can’t handle another rain day. Believe me, I hear ya. And I’m there too. But I checked the weather forecast and they are predicting sunny skies … Continue reading
Mid-Fall is a great time for IPM in the Landscape
The rainy, cool conditions that characterized the 2014 growing season have left their mark on several trees and shrubs. There is an unprecedented amount of foliar diseases in the landscape, some of which we don’t commonly see from year to … Continue reading
Posted in Arboriculture, Diseases, IPM, landscape, Mites
Tagged ipm nursery, Jen Llewellyn
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Keep Trees and Shrubs Healthy With Fall Fertilizing
Leaf drop and fall colour is visible on trees and shrubs in the landscape. This is especially true of woody plants on roadsides, high sandy knolls or compacted sites. In some cases where individual specimens are entering senescence earlier than … Continue reading
Some late season pests (September 17, 2014)
There are a few odds and sods kicking around this time of year. Usually late season feeding injury is not a big deal. However when the pest is going to make your ornamental plants its “forever” home…..you might want to … Continue reading
Rodent Patrol…..Are your woody plants protected for winter?
Yes fall is here, early. And if you haven’t already, its time to start your rodent management program. In Ontario we are blessed with several different species of herbivores that love to chow down on our ornamental woody plants.This past … Continue reading
Posted in Arboriculture, IPM
Tagged feeding damage on trees, Jen Llewellyn, vole management for trees
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Winter Injury Still Rearing It’s Ugly Head
Believe it or not (and maybe you don’t believe it), but many horticulturalists believe that the recent dieback on trees and shrubs in the landscape and nursery can be at least partially explained by winter injury. By winter injury … Continue reading
Posted in Arboriculture, IPM, landscape, Nursery Production, Weather
Tagged Jen Llewellyn, winter injury to landscape trees
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