Yes. Apple scab rarely kills a tree outright, and while this season's infected leaves and fruit can't be cured, treating now stops the fungus from spreading further and protects the tree heading into next year.

Can This Season's Fungicide Spray Reverse Existing Scab Symptoms?

No. A fungicide works as a protectant coating, meaning it stops new spores from germinating on the surfaces it covers, but it can't clear lesions that have already formed on infected leaves or fruit. Spraying now is about protecting whatever healthy tissue remains, not undoing damage that's already visible.

Is Fruit With Visible Scab Spots Still Safe to Eat?

In most cases, yes. Infected fruit typically stays edible even though scab can leave it misshapen, cracked, or covered in rough brown spots that affect its appearance rather than its safety.

What Can Be Done Right Now to Limit the Spread?

Spraying Liquid Copper Fungicide Spray onto the tree's remaining healthy growth, to the point of runoff, protects new leaves and fruit from further infection for the rest of the season. Reapplying every 7 to 14 days, sooner after heavy rain, keeps that protection in place while the tree finishes out the year.

How Can Next Year's Infection Be Reduced?

Raking up and removing fallen leaves in autumn cuts down the number of spores that would otherwise overwinter on the ground beneath the tree and reinfect it the following spring. Since this year's spray can't reverse the current damage, that fall cleanup is the single most effective step toward a cleaner season next year.

Frequently Asked Questions

Will the tree need to be removed if scab comes back every year?

No, not typically. Apple scab mainly affects leaf and fruit quality rather than the tree's survival, though repeated severe infections across several seasons can gradually reduce vigor if left unmanaged.

Is it too late to spray once scab symptoms are already visible?

No. Spraying still protects any new growth that forms for the rest of the season, even though it won't clear the spots already present on existing leaves and fruit.

Does rain affect how well this year's remaining sprays work?

Yes. Rain washes the protective coating off the leaves faster, so reapplying sooner than the standard 7-to-14-day interval keeps coverage active during wet stretches.

Should already-infected leaves be pruned off mid-season?

Not necessarily. Removing a few heavily infected leaves is optional, but the fall leaf cleanup matters more for reducing next year's infection than mid-season pruning does.