Photo of the Week
Be on the lookout for the second generation of Euonymus scale crawlers! The second generation emerges about 6 weeks after the first, putting them in mid-late July this year.
Category Archives: IPM
Those Precocious Blooms of April!
outher Norway maple (Acer platanoides and its cultivars) are just starting to bloom in the GTA, making this one of the earliest blooms for trees since 2012! Continue reading
April Showers and April IPM Opportunities
Unusually warm weather has hastened the flowering of many trees, shrubs and bulbs! Although we have more seasonable daytime high’s in the forecast for the next week, night time low’s will be above 0C in southern Ontario. Silver maples may … Continue reading
Posted in Arboriculture, IPM, landscape
Tagged bagworm, bugfinder, city of toronto, eastern tent caterpillar, fall cankerworm, gypsy moth, Jen Llewellyn
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Crabapple Disease Management Begins Soon!
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 fireblight is looking low again this week.
Posted in Diseases, IPM, landscape, Nursery Production
Tagged apple scab, fireblight, Jen Llewellyn, katie goldenhar, kristy grigg-mcguffin
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2021 Will Be Remembered as “The Year of the Gypsy Moth”
Posted in Arboriculture, Insects, IPM, landscape, Weekly Nursery Landscape Report
Tagged biocontrol, bugfinder, dave cheung, gypsy moth, Jen Llewellyn, lymantria dispar
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Dormant Horticultural Oil App’s This Week!
Dormant oils should not be applied if the temperature is below 4C or if the temperature will approach freezing soon after application of the dormant oil spray. The freezing temperatures can mess with the emulsion of the oil mixture and cause uneven application. Continue reading
Questions About Pesticide Resistance?
OMAFRA Lunch and Learn Series has Answers. REPOSTED FROM: DECEMBER 18, 2020 SARAH JANDRICIC, GREENHOUSE FLORICULTURE IPM SPECIALIST, OMAFRA Pesticide resistance is something most growers have run into at some time or another. High pesticide resistance in species like western … Continue reading
Temporary Mild Weather Spell Supports Fall Dormant Oil App’s
Now that trees have dropped their leaves and the weather has turned mild for a bit, hort professionals have a short bonus shot at managing overwintering plant pests! The full, dormant rate of horticultural oil is excellent for smothering juvenile … Continue reading
IPM in The Middle of August
We recently cracked a case of stunted, distorted leaves and premature leaf drop on honeylocust this week….
Watch Out For Hot Spots of Magnolia Scale
Magnolia scale females have given birth to live young, and these tiny, dark crawlers have started to venture out to feed on twigs in the landscape. Signs of magnolia scale include honeydew: sticky leaves and sticky residue on vehicles and … Continue reading