Apple Scab is one of the most common diseases to attack apple trees in the Ottawa area.  Apple Scab is caused by a fungus (Verturia Inaequalis) and is most prevalent in areas with mild/wet spring conditions.

Apple Scab first appears as small brown spots on the underside of leaves, eventually spreading to the top of the leaf and the fruit.  When a tree is attacked by Apple Scab the fruit becomes malformed and usually drops early.  Severe cases can cause trees to become defoliated.

There are spray options to help control Apple Scab which are applied in the early spring, pre-bud break.  To discuss control options please contact one of our Experts.