Organic Black Spot Control Recipe

Black spot is a plant disease caused by wind-born fungus spores dispersed in water droplets.  The spores land on the top of leaves and, when growing, looks like circular black spots with irregular edges  The infected leaves will finally turn yellow and drop off.  If the disease is severe, all the leaves will drop from the plant and a new set will have to grow, this causes undue stress for the plant.  The quality of blooms will suffer and the plant will be weakened.  

Black spot cannot be cured but it can be controlled.  In climates where there is a lot of rain in the summer or high humidity, black spot is more prevalent.  Blacks pot can be controlled by spraying with a fungicide every ten days.  In addition to spray control, clean up all dead and fallen leaves, water just before the sunny part of the day, when the sun will dry the leaves or use drip or soaker type hose.  Remove the first six inches of leaves from the bottom of the bush from the ground up so water splashed spores won’t get on the foliage.  Feed and water the plant well, a weak or stressed plant will succumb more quickly.  Also, choose varieties that are resistant to black spot.

Control Remedy

Use one tablespoon of the following two part recipe per one gallon of water.

1.  Application #1:  Baking Soda, Canola Oil, Miracid (if you don’t have this, omit it), and Ivory soap.
   
   
2. Application #2:  Cider vinegar, Liquid Seaweed, Epsom Salt, Ivory Soap and Canola Oil.
   
   

Application #1 should be followed by application #2 ten days later.  This should be applied as a foliar spray.  The underside of leaves should be sprayed as well as the surface.  Be certain to water roses the night prior to spraying.  Apply spray to roses either early morning or late evening.  Remove all dead leaves from base of plants, mulch beds and avoid watering leaves when watering roses.  Powdered Sulfur may be applied after rain or during wet weather.

Organic Black Spot Control Recipe

Blackspot is a plant disease caused by wind-born fungus spores dispersed in water droplets.  The spores land on the top of leaves and, when growing, looks like circular black spots with irregular edges  The infected leaves will finally turn yellow and drop off.  If the disease is severe, all the leaves will drop from the plant and a new set will have to grow, this causes undue stress for the plant.  The quality of blooms will suffer and the plant will be weakened.  Blackspot cannot be cured but it can be controlled.  In climates where there is a lot of rain in the summer or high humidity, black spot is more prevalent.  Blackspot can be controlled by spraying with a fungicide every ten days.  In addition to spray control, clean up all dead and fallen leaves, water just before the sunny part of the day, when the sun will dry the leaves or use drip or soaker type hose.  Remove the first six inches of leaves from the bottom of the bush from the ground up so water splashed spores won’t get on the foliage.  Feed and water the plant well, a weak or stressed plant will succumb more quickly.  Also, choose varieties that are resistant to blackspot.

Control Remedy

Use one tablespoon of the following two part recipe per one gallon of water.

1.  Application #1:  Baking Soda, Canola Oil, Miracid (if you don’t have this, omit it), and Ivory soap.

1.  Application #2:  Cider vinegar, Liquid Seaweed, Epsom Salt, Ivory Soap and Canola Oil.

Application #1 should be followed by application #2 ten days later.  This should be applied as a foliar spray.  The underside of leaves should be sprayed as well as the surface.  Be certain to water roses the night prior to spraying.  Apply spray to roses either early morning or late evening.  Remove all dead leaves from base of plants, mulch beds and avoid watering leaves when watering roses.  Powdered Sulfur may be applied after rain or during wet weather.