Description of Disease
Black spots appear on leaves, expands to larger spots which may turn yellow and
whole leaf dies. Entire leaves turns yellow and falls off, mostly affects lower leaves on
A fungus which likes moisture in air and soil, caused by dead soil,
eco-system, chlorinated city water, using high nitrogen fertilizers (urea based), over head
watering encourages fungi to spread.
Reduce over head watering, provide soaker or drip, apply rock dust, compost
and mulch over.
add a good organic fertilizer to insure good new growth.
Use a Garden Filter when watering to reduce chlorine
Use Bacterial sprays such as nitron.com Shure Crop, Superseaweed, Agri-Gro etc.
Spray a fungus spray such as garlic/
baking soda, add 5 drops garlic oil , 5 tablespoons Baking soda to 1 gallon water, add 2 drops
Dr. Bronners Peppermint soap (as wetting agent)
See baking soda formula. for more info
Compost tea spray
will also encourage beneficial bacteria. See compost tea page. Compost Tea Page
Short Term Solutions:
Composting/mulching several times per year.
Controlling water thru soaker or
drip systems, using a garden filter when ever possible.
Use the bacterial sprays.
Use a good foliar seaweed such as Superseaweed.
Use no chemicals, no high nitrogen fertilizers, use composted animal
manures, use organic fertilizers, use only natural sprays. See also Organic Fertilizer Dept
Long Term Solutions:
Proper composting and mulching is important. Use soakers or drips systems,
best with inline feeder systems, use beneficials (like beneficial nematodes), Beneficials Dept use only organic fertilizers (or
make your own), Organic Fertilizer Dept use natural
foliar mentioned in this book, encourage earthworms, companion planting, A fine horticultural
oil can be used here in the early spring to control spores. From Using Soap to Using Ultra Fine Oil
March 10, 2013
The Invisible Gardener
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