The Richgro Problem Solver can be helpful in resolving problems you might be experiencing in your garden. This section and the products we recommend to help can be used as a general guide to assist in determining your problem and possible solutions.

Blackspot

This disease can attack leaves, stems and fruit of plants. Black spot is caused by a fungus. It starts with circular, feathery black spots which first develop on the upper surface of leaves and continues with all infected leaves turning yellow and falling prematurely. When the new leaves are produced they can also be infected. This is a popular problem on roses especially during warm conditions and can have devastative consequences so be sure to check your rose bushes daily for any signs of black spot.

For preventive action on roses use Rose Marvel in Autumn which will help reduce the incidence of fungal diseases in next seasons. For control use Richgro Blackspot & Insect Killer for Roses or Richgro Triforine. Or for other applications use Richgro Copper Oxy Chloride.