-
Join 1,286 other subscribers
Categories
- animal injury
- Application Technology
- Arboriculture
- Borers in Landscape Trees
- box tree moth
- Brown Marmorated Stink Bug
- Christmas Trees
- Conferences
- Covid-19
- Diseases
- Educational Opportunities
- Environment
- Funding
- Funding Opportunity
- Innovations
- Insects
- Invasive Species
- IPM
- Irrigation and Water Quality
- japanese beetle
- landscape
- Marketing
- mental health
- Mites
- Nursery Production
- Plant Nutrition
- Uncategorized
- Weather
- Weeds
- Weekly Nursery Landscape Report
Search (Enter search word below). Click on resulting document, press “Ctrl F” and type search word after Find: in pop up search bar.
Category Archives: Diseases
Those Darling Buds of May- 2018
Lots of early Plant Phenology indicators are blooming this week! That puts us somewhere around 15-25 GDD’s Base 10C in the GTA. A little more in the southwest (London and west). Plant Phenology indicators this week … Continue reading Continue reading
But Baby, It’s Cold Outside
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, mike celetti
Leave a comment
Crab-apples looking…..rough?
Yes the exceptionally cold, wet, cloudy spring has been particularly supportive of fungal and bacterial diseases during leaf emergence this year. And our ornamental crab-apples are paying the price with thinning canopies and dieback. Click HERE for the AUDIO … Continue reading
Posted in Diseases, Weather
Tagged apple scab, fireblight, Jen Llewellyn, mike celetti, onnurserycrops
Leave a comment
Injectable Solutions for Landscape Trees
The black locust (Robinia pseudoacacia) are in full bloom as this is the phenology indicator species for the emergence of emerald ash borer adults.
Blasted Blight on our Beautiful Maples
Seeing dark spots and blighted tissue on our native maple leaves?
Rough Winds Do Shake the Darling Buds of May
Click HERE for the AUDIO version of this blog post. We are seeing wind tattering damage on tender … Continue reading
Protect Evergreens Where New Growth is Emerging
Monitor for needlecast and blight diseases on older foliage where new foliage is emerging on PINE and SPRUCE.
Welcome May 24 Weekend!
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 weather continues! Climatologists are predicting that our daytime temperatures will stay moderate until about the […]
Protect Rosaceous Hosts Now From Juniper Rusts
Gymnosporangium rusts are sporulating now on Juniperus hosts. Look for orange, gelatinous structures on foliage and stems of various Juniperus spp. They are sporulating both in container production and in the field. They can usually be found sporulating when the … Continue reading
Posted in Diseases, Uncategorized
Tagged cedar apple rust, gymnosporangium rust, Jen Llewellyn
Leave a comment
Protect Malus and Pyrus Now
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, Nursery Production, Uncategorized
Tagged apple scab, fireblight, Jen Llewellyn, mike celetti
Leave a comment
