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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.
Crop Protection Guide for Nursery & Landscape – 2016 version
http://www.omafra.gov.on.ca/english/crops/pub840/p840order.htm For detailed management and biology for common pests of woody plants, check out the new 2016 edition of OMAFRA publication 840. It is just being edited for pdf online. In the meantime, you can email our OMAFRA Contact Centre and request … Continue reading
Posted in Arboriculture, IPM, Nursery Production
Tagged ipm in the landscape, ipm in the nursery, Jen Llewellyn, publication 840
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Going To Be Cool For a While Still
What a treat! Several of our sugar maples are blooming this year all over southern Ontario, from Barrie to Niagara, these native beauties are gracing our landscapes with blooms. Its been 5 years since sugar maples were blooming like this. The cooler … Continue reading
Protect Malus Against Apple Scab
Fireblight (apple, pear, see above) and Apple Scab (apple) diseases are normally reproducing and spreading this time of year. This week we are more concerned about Apple Scab. The cool weather has really reduced the activity of fireblight bacteria and so the risk of … Continue reading
Posted in Diseases, Nursery Production, Uncategorized
Tagged apple scab, fireblight, Jen Llewellyn, mike celetti
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Cool Weather, Warm Hearts
This cooler weather has been a nice break, slowing down plant development and reducing heat and desiccation stress on newly planted or harvested nursery stock. We inched up … Continue reading
Spring is Spring-ging
Lots of new Plant Phenology indicators are starting to bloom this week! That puts us somewhere between 20 and 35 GDD’s Base 10C in the GTA. A little more in the southwest and a little less above Hwy 9.
Dormant Oil, Still A Great IPM Tool
We’ve got milder temperatures starting today and yes, it’s still a good time to get some late dormant oil applications on in many areas of southern Ontario (Photo: overwintering nymphs of magnolia scale). As long as there is no sensitive … Continue reading
REMOVE & DESTROY Cankered-Looking Deadwood
While woody plants are still dormant and bark is very visible, its a great time … Continue reading
Posted in Diseases, IPM, Uncategorized
Tagged botryosphaeria, filbert blight, fireblight, Jen Llewellyn
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Is it Needlecast Disease….or something else?
We’ve seen a fair amount of dieback on spruce trees in the nursery and landscape over the last few years. It all seemed to start back in the fall of 2013, just after that wicked hot summer where some areas … Continue reading
Posted in Christmas Trees, Diseases, IPM
Tagged Jen Llewellyn, rhizosphaera on spuce, stigmina on spruce
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A Few Early Season Pests
Now is a great time to scout for overwintering pests in the landscape and nursery. There is still an opportunity to apply cultural management methods to reduce pest incidence on woody plants. For those of you in areas where bagworm … Continue reading
Posted in Insects, IPM
Tagged bagworm, eastern tent caterpillar, gypsy moth, Jen Llewellyn, viburnum leaf beetle
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