August 1, 2022
Searles Gardening Team
What are Black Spot symptoms?
Black spot is a real problem on roses, but can also affect fruit trees such as citrus, paw paw and apples. Black spot is a fungal disease which appears as black spots on leaves initially, then turns the leaf yellow and drops off. Black spot spores can be spread by wind and contact with an affected plant. Rose growers take great pride in growing their prized beauties and Black spot is an unsightly welcome that needs to be treated promptly.
Black spot is generally seen in cool weather or periods of wet weather and loves humid warm climates. Plants lacking in minerals and unbalanced soil structure are more susceptible to this disease also. It is very important to keep roses and fruit trees healthy.
How to control Black Spot
For severe cases, spray with the following sprays for effective treatment.
Roses & pome fruit - use either Searles Mancozeb Plus or Mancozeb.
Roses - use either Trifend or Rose Pro.
Citrus - use Copper Oxychloride.