Diseased Salix Shrub

Hello Master Gardeners, thank you for providing an opportunity for people to obtain knowledge about plants. My house came with this shrub (see pics attached) and we have had it for over 14 years now. It has grown significantly over…

Transplanting bulbs

Hi there, I am in zone 6b and have a clay soil. This year I had many diseases present in the garden, botrytis, blight, powdery mildew, maybe downy mildew etc. I am planning to plant tulips, daffodils, muscari, iris reticulata…

Leaves: Oak and Norway Maple

1. Is better to leave oak leaves in the garden or remove them? 2; For oak leaves not in the  garden I rake and shred, then put in compost… they are slow but do compost. Any problems with this? 3.…

Horse Chestnut

IS A CERTIFIED ARBORIST THE SAME AS A CERTIFIED TREE DISEASE DIAGNOSTICIAN? I NEED TO FIND OUT WHAT IS AILING MY TREE AND AM LOOKING FOR A REFERRAL. MANY THANKS!…

Sad looking Boxwood

Hi, My boxwood is along a garage and faces south but has some shade because of a beautiful oak that is situated in our garden. At the beginning of the season there were some brown areas on the bush but…

Coneflowers wilting and drying up

Hello, why are my coneflowers are wilting and drying up. I’ve attached a photo. It seems to be happening section by section as you can see some stems are still fine. I live in Scarborough. They’re planted in a flower…

Cucumber Disease

I live in zone 6. Clay soil, that has been amended with manure worm castings, compost and balanced organic fertilizer. My cucumbers have had a few leaves like this one in the photo. I am not sure if this is…

Spruce tree dripping sap

We have 5 spruce trees Along our fence line and for some reason they are all dripping sap. Seems to be coming from the needles but has been going on for weeks now. Earlier in the spring I noticed lots…

Powdery mildew on zucchini leaves?

There is some white spots on my zucchini leaves. I was wondering if they were infected by powdery mildew. How can it be treated? Thank you so much for your help!…