Kim from West Monroe, La writes
They have spots on them and I'm not sure if its a fungus or insect causing the damage.
Yes, the Fertilome Triple Action Plus II would be safe to use on your mandevilla plant and would take care of a large variety of fungi, diseases and insects that might be causing it damage. You will mix it at a rate of 1 ounce per gallon of water.
Answer last updated on: 06/29/2013