How to Cure Mildew on Cucumbers

Overview

Most mildew infestations of cucumber plants are carried in by the wind. Two natural organic solutions to a mildew problem are a milk solution and a tea made from chives. However, for some more resistant infestations, a harsher natural or chemical fungicide may be required. If you live in an area prone to mildew, you can use either the milk solution or the chive tea as a preventative measure.

Milk Treatment

Step 1

Mix one part milk with one part water. An enzyme in the milk helps control cucumber mildew.

Step 2

Spray the plants every three or four days when you first notice the mildew.

Step 3

Spray the plants weekly as a preventative measure for mildew and several other fungal diseases.

Chive Spray

Step 1

Put a cup or two of chives in a glass container.

Step 2

Cover the chives with boiling water.

Step 3

Strain the mixture.

Step 4

Spray your cucumbers two or three times a week as a preventative measure.

Other Natural Fungicides

Step 1

Apply a natural copper-based fungicide according to label instructions. Be careful, however, as fungicidal levels of copper can be toxic to some beneficial organisms, like earth worms.

Step 2

Apply a fungicide containing neem oil. Again, although it is a natural fungicide, the concentrations may be toxic to some organisms, like ladybugs.

Step 3

If all else fails, try using minimal quantities of chemical fungicides. Be aware, though, that these can harm beneficial organisms and are not considered organic.