Paula from Ashby Ma writes
We had a very wet spring in MA. Missed a spray application and now our trees have become heavily infected with scab and some other type of fungus (not sure exactly what it is.) Normally we just use Captan and Rally - but neither does much post infection.
Hi Yield Dusting Wettable Sulfur does say on the product label that it will control scab on plants whether it is a preventative or curative use. Depending on the type of scab, and if there are other diseases or insects present causing other damage, the applications may have to be applied more frequently and for longer than normal. You may need a systemic product as well if its a root disease. Try to get a sample of the tree to take to a local Master Gardner in your area to see if you can identify exactly what you have to make sure you are using the best products for your needs. Please let us know if you have any other questions.
Answer last updated on: 07/18/2013
