Ask Categories: Pests & Diseases

Foam patches on my roses and yarrow

I have these ‘foam’ bubbles/clumps on my roses and yarrow. Are they harmful or should I remove them. The majority of my plants are native 90% and organic.…

Insects on Fagus ‘Red Obelisk’ Beech

I have a red obelisk beech tree in a large pot, 3 years old, South West facing lake Ontario on the terrace. I just noticed this white fluffy stuff on the underside of some leaves. Some of the leaves have…

Insects on Charles Albanel Roses

Blooming at present BUT many of the buds are infested with insects which include webs.Eaten into the bud. I just put on Safers insecticide – think its too late for that – I did take off some of the buds…

Boxwood issue

I have a boxwood that isn’t doing very well. It’s hard to tell from the pictures, but the leaves aren’t looking great and there are very fine silvery cobweb-type strands throughout the plant. Any advice?…

Camperdown Elm

  We have a mature Camperdown elm (approx. 60 yrs). Within the past couple of weeks we have noticed that the leaves on a number of branches are wilting. The affected area is random i.e. not confined to one area…

Pest or fungus damaging a peony plant

Peony plant, mostly sunny spot, well drained soil, began to have curled deformed leaves as it transitioned from red shoots to stalks and leaves. No buds, and patches of the plant are looking quite deformed and affected stalks now turning…

Rose rosette disease

Hello, This is a 2 year’s old pink knock out rose. Growing in part sun (4 hours) raised bed in zone 5. There are 2 canes out of 5 that are bright red with some narrow, curled down leaves. photo…

Clematis blight on a Josephine Clematis

I have a Josephine clematis in a pot on a south west facing terrace on the 8th floor of a condo. It has many blooms, but the flowers and buds have started to droop with brown stems. This happened last…

Disease in rugosa rose bushes

how do I treat these rose bushes. I have about 25 feet of rose bushes, facing south. my garden is just north of the 401, off bayview. The area of the bushes is fairly dry. most of the bushes seem…