White spots on cucumber leaves

akalaniJune 26, 2013

Hi, I planted cucumber plants about two months ago, and now strange white spots have started to appear on the lower older leaves. These leaves are beginning to look very old and appear to be on their way to dying out. Could someone suggest what might be going on? Is it a fungal disease or a natural process for the plant.

Attaching a pic.


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Powdery mildew.

Get new plants.

    Bookmark   June 26, 2013 at 5:30AM
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Based on advise I found on the internet , I sprayed a mixture of 2 cups milks and 3 tpsp baking soda (and 1 drop soap). The leaves now show yellow colored scaling :-(

Any suggestions on fungicides to use or other remedies??

    Bookmark   June 28, 2013 at 11:36PM
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Avocado101(9A Southern California)

Personally I haven't tried this, but try: four teaspoon baking soda, 1 teaspoon dawn, and one gallon of water. The recipe is from the link. You might want to spot test first.

Here is a link that might be useful: homemade fungicide recipe

    Bookmark   June 28, 2013 at 11:56PM
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Well, wash off what you have on there now.

It's not milk AND baking soda--- it's either OR. 1 part milk to 10 parts water.


1 TB baking soda and 1 tsp insecticidal soap to a gallon of water

Here's some more info.


Here is a link that might be useful: Powdery Mildew

    Bookmark   June 29, 2013 at 12:03AM
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seysonn(8a WA/HZ 1)

Powdery Mildew.

Milk/water is only good if you've have been spraying regularly before out break.

At this stage I suggest NEEM oil spray.

    Bookmark   June 29, 2013 at 2:49AM
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