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Author Archives: Jen Llewellyn
Protect Evergreens Now, New Growth is Emerging
Monitor for needlecast and blight diseases on older foliage where new foliage is emerging on pine and spruce.
Posted in Diseases, IPM
Tagged diplodia tip blight, Jen Llewellyn, rhizosphaera on spuce
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Fast times in the Ontario Landscape
This past week was way above average for temperatures for the beginning of May. This has increased the GDD accumulations and hastened plant and insect development. Many plants that normally bloom sequentially are blooming (and pollinating) at the same time, Aye … Continue reading
Continue to Protect Against Fireblight and Apple Scab
Now is the time that Fireblight (apple, pear, see above) and Apple Scab (apple) diseases are spreading to new, emerging growth in the nursery.
Posted in Diseases, Nursery Production, Uncategorized
Tagged apple scab, fireblight, Jen Llewellyn
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Potato Leafhoppers spotted in Hamilton Area!
Like Arnold said, “I’ll be back”. Potato leafhoppers were spotted on yellow sticky cards in the Hamilton area a few days ago.
Posted in Insects, Weekly Nursery Landscape Report
Tagged Jen Llewellyn, potato leafhopper
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EVERGREENS: Winter Desiccation or a Pest Issue?
I had a request for an article on diagnosing winter desiccation versus pest and disease issues on evergreens. I find diagnosing diseases of evergreens versus physiological and abiotic disorders to be tricky. But here is the decision-making process that I … Continue reading
Those Darling Buds of May, 2015
We’ve got a warm week ahead of us and for those of us in the green industry, we are all wishing that spring would slow down a little bit. Buds are bursting like crazy, making bloom periods as well as … Continue reading
Posted in IPM, Weekly Nursery Landscape Report
Tagged gypsy moth, Jen Llewellyn, plant phenology, septoria leaf spot, WHAT'S THAT SOUND
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Spruce needle drop in the Landscape?
It seems to be one of the most common complaints this spring: my spruce tree is turning brown and dropping needles!!!!
Posted in IPM, Weather
Tagged Allgreen Tree Service, Jen Llewellyn, spruce tree decline, spruce tree needle drop
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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
Managing a Few Diseases on Ornamentals
Remember all that Fireblight (1st photo) and Apple scab (2nd photo) we had the last couple of years on apple, crabapple and pear? Now is the time to start fighting back.
Posted in Diseases, IPM, Nursery Production
Tagged apple scab, filbert blight, fireblight, Jen Llewellyn, mike celetti, omafra
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Horticultural Oil, Slow Release Fertilizer and A Few Pests
Applications of horticultural oil to dormant trees and shrubs will be starting soon (daily temperatures between 4C and 12C are ideal). If you can wait for a few mild days to pass, overwintering insects will have a higher rate of … Continue reading
Posted in Insects, Plant Nutrition
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