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Tag Archives: Jen Llewellyn
June 12/14: Yellow headed spruce sawfly is OUT
Look for tiny larvae of Yellow-headed spruce sawfly feeding on tender new needles of spruce (e.g. Colorado spruce) in the landscape. Plant phenology indicator: Robinia pseudoacacia (black locust) in full bloom. Larvae are green with lighter longitudinal stripes, yellow-brown heads. … Continue reading
Posted in Insects, IPM, landscape
Tagged Jen Llewellyn, spruce sawfly, yellow headed spruce sawfly
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June 7, 2014 IPM in the Nursery & Landscape
Environment Canada is calling for a gorgeous weekend, right through until early next week!!! Do you have a Harlequin Norway maple (Acer platanoides ‘Drummondii’ )? Did you notice how sometimes the twigs will revert back to solid green? Keep … Continue reading
Potato Leafhoppers are BACK!
ADULT Potato leafhoppers have arrived in southern Ontario! ADULT potato leafhoppers overwinter in the southern states, gradually migrate up from the south each spring and will feed and lay their eggs on newly expanding leaf tissue as they go. The … Continue reading
Posted in Insects, IPM, Nursery Production
Tagged Jen Llewellyn, pests of shade trees in the nursery, potato leafhopper
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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…..
