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Author Archives: Jen Llewellyn
Get OUT! Honeylocust Plant Bugs Are
Honeylocust Plant Bug nymphs were found feeding on emerging foliage of Gleditsia tricanthos (honeylocust) in the Greater Toronto area this week. Plant bugs are tiny, yellow-green insects that feed with piercing-sucking mouthparts on emerging foliage. They have a toxic … Continue reading
Lots going on in IPM this week May 30/14
Environment Canada is forecasting a lovely, warm weekend. Rain may return on Monday so keep that in mind if you are still managing diseases during leaf emergence. What a beautiful weekend for digging up dandelions and re-seeding the lawn and … Continue reading
Lot’s and lot’s of spots (May 30/14)
Until recently, we’ve been experiencing a fairly cool, wet spring with some pretty significant temperature shifts over a short period of time. The differences in day and night temperatures can be very damaging to plant tissue and we have seen … Continue reading
Posted in Diseases, Nursery Production, Weather
Tagged Jen Llewellyn, low temperature injury, Pseudomonas syringae
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May 26/14: Is that one dead too?
PLANT PHENOLOGY indicators this week, A) north of 401, include: Cercis canadensis (redbud, full bloom); Amelanchier laevis (serviceberry, late bloom); Syringa vulgaris (common lilac, early bloom) (150-200 GDD base 10oC)B) Niagara: Aesculus hippocastanum (horsechestnut, full bloom); Prunus serotina (black … Continue reading
Posted in IPM, Nursery Production, Uncategorized
Tagged arboriculture, Bronze Birch Borer, Emerald Ash Borer, euonymus scale, IPM, Jen Llewellyn, nursery crops, ontario
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It’s raining again (May 20, 2014)
Rain is in the forecast for much of southern Ontario for the next 24 hours. There is a chance of thunderstorms in some areas. This is FANTASTIC weather for shopping at the local garden centre and watering in newly planted … Continue reading
Posted in Arboriculture, Insects, IPM, Nursery Production
Tagged arboriculture, euonymus scale, IPM, Jen Llewellyn, nursery crops
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May 10 Nursery-Landscape Report: “Those Darling Buds of May”
Well it’s the Friday of the Victoria Day long weekend and although it’s going down to 2-3C in many areas tonight and tomorrow night, I don’t see any risk of frost for areas south of Barrie. Keep in mind that … Continue reading
A rainy, warm week ahead
Environment Canada is forecasting a 40-60% chance of precipitation for much of this week, its raining in the southwest this morning. There are several diseases that will be active this week on Rosaceous plants such as apple, pear and serviceberry…..
Spring has sprung!
For those of us that have been wishing for warmer temperatures, our dreams are finally coming true. But along with the heat, we have some precipitation coming. Spruce spider mites are hatching as new growth is emerging, monitor for … Continue reading
A slow, wet start to spring
Due to the cool, overcast weather, we haven’t been receiving much heat in most parts of southern Ontario. In Guelph, the Cornus mas (Cornelian cherry dogwood) is just starting to bloom, many still in flower bud, the Acer saccharinum (silver … Continue reading
Posted in IPM
Tagged boxwood psyllid, dormant oil, ipm in the landscape, ipm in the nursery, Jen Llewellyn, tree and shrub pests
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Horticultural Oil Applications Starting (again?) Soon
Applications of horticultural oil to dormant trees and shrubs will be starting soon (daily temperatures between 4C and 12C are ideal). Timing of dormant oil applications are critical since freezing temperatures, mixing with sulphur and applying at the dormant-rate on actively … Continue reading
Posted in Insects, IPM, landscape, Weekly Nursery Landscape Report
Tagged dormant oil, horticultural oil, Jen Llewellyn
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