Description: Spots on the leaves become covered with a lavender
or purplish mold. Requires cool temperatures and rain
or high humidity. Under these conditions, onion leaves
bend, resulting in lower yields and bulb quality.
Solution: Grow onions
in well-drained soil to keep roots from getting soggy.
To prevent the spread of disease, wash tools and shoes
after you work in the vegetable patch. Remove weeds
and garden debris, which harbor insects that transmit
diseases. Check plants every few days for signs of damage,
and destroy infected plants. Spray regularly with Soap-Shield® Fungicidal Soap
to reduce infection. (Because of the continual emergence
of new leaves from the neck, timely and thorough spraying
will be required to keep new growth covered).