In mid-late autumn, we have an opportunity to manage some of our plant pests, such as mite eggs and scale insect nymphs, before they go completely dormant. Now that trees are starting to drop their leaves and the weather has turned mild for a bit, horticultural professionals have a great window for managing some overwintering plant pests! The full, dormant rate of horticultural oil is excellent for smothering juvenile stages of insects this time of year as long as the application isn’t followed too closely by a significant freeze event. Magnolia scale (photo above: overwintering nymphs in autumn J. Llewellyn) populations were… Continue reading →
I am Mieke Boecker, the 2021 OMAFRA Summer Field Technician. I worked closely with Jen Llewellyn, OMAFRA Nursery and Landscape Specialist on several projects and this article outlines some of the highlights of my summer contract with OMAFRA.
White waxy filaments produced by beech scale mothers protect eggs and hatching nymphs on the trunk of this American beech (J. Llewellyn)
Introduced Beech scale (Cryptococcus fagisugae) goes hand in hand with beech bark disease (Neonectria faginata and N.ditissima). It is believed that the wounds made by the tiny scale nymphs create entry points for the lethal fungal disease. Beech scale is easier to see this time of year on our native American beech (Fagus grandifolia). That’s because of the white waxy coverings the females produced to protect their eggs in late summer. Continue reading →
Do you ever see chlorotic or stunted leaves and wonder if it could be a particular nutrient deficiency? Soil nutrient testing can be a good tool to assess levels of macro and micronutrients. We use soil tests to help make decisions about adding fertilizer and organic materials to the soil. But what soil tests don’t always tell you is……how much of the nutrient is available for plant uptake? To get a more accurate picture of nutrients that could be deficient (or excessive), we look to foliar nutrient content analysis.
Looking up at the sky today, it was so hazy you couldn’t see much but a fuzzy-looking grey. This is a different kind of overcast than what we normally get to experience. Hundreds of wildfires are burning in the west and prevailing winds are carrying the smoke eastward to Ontario and beyond. “The layer of smoke is in the upper atmosphere and it is not affecting air quality”, Peter Kimbell, a warning preparedness meteorologist for Environment Canada based in Ottawa, told CBC Toronto. Get ready for some cooler weather on its way for Wednesday 🙂
Here’s a pest you have been hearing about more and more, the Spotted Lanternfly (Lycorma delicatula). It is not a fly, but a planthopper. In the Order Hemiptera, Family Fulgoridae. It is actually a much stronger hopper than it is a flyer. They may remind you of frogs they way they sit and hop around. Found recently in the US and now spreading rapidly across several states, Spotted Lanternfly is a pest we are actively looking for in Ontario. IF YOU THINK YOU HAVE FOUND THIS PEST, PLEASE REPORT IT TO CFIA BY CLICKING HERE. OR Call: 1-800-442-2342