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Whats happening to my zucchini
+3
yolos
camprn
brubakes
7 posters
Page 1 of 1
Whats happening to my zucchini
Whats happening to my zucchini? It just started this past week by seems to be going down fast. 



Re: Whats happening to my zucchini
That looks like powdery or downey mildew. Get in there and with your garden clippers cut off all the effected leaves near the vine. Do not cut the vine.
The milder happens when it's hot and humid. I have had some success keeping ahead of it by pruning (increasing the air circulation in the bed) and using a baking soda spray on top and underneath sides of the leaves.
Baking soda spray disrupts the life cycle of the mold and will need to be reapplied after it rains and every 10 days or so.
Baking Soda Recipe for Powdery Mildew
Ingredients: in a milk jug
1 gallon of water
1 tablespoon of baking soda
1 tablespoon of vegetable oil
1 tablespoon of dishwashing liquid
The milder happens when it's hot and humid. I have had some success keeping ahead of it by pruning (increasing the air circulation in the bed) and using a baking soda spray on top and underneath sides of the leaves.
Baking soda spray disrupts the life cycle of the mold and will need to be reapplied after it rains and every 10 days or so.
Baking Soda Recipe for Powdery Mildew
Ingredients: in a milk jug
1 gallon of water
1 tablespoon of baking soda
1 tablespoon of vegetable oil
1 tablespoon of dishwashing liquid
43 years a gardener and going strong with SFG.
https://squarefoot.forumotion.com/t3574-the-end-of-july-7-weeks-until-frost
There are certain pursuits which, if not wholly poetic and true, do at least suggest a nobler and finer relation to nature than we know. The keeping of bees, for instance. ~ Henry David Thoreau
https://squarefoot.forumotion.com/t1306-other-gardening-books
Re: Whats happening to my zucchini
Camprn, your recipe should take care of the powdery mildew, but what about the yellowing leaves. Does the mildew cause the leaves to turn yellow. I have some powdery mildew on squash I am fighting right now but so far the leaves have not turned yellow. Could the OP have more than one problem.
yolos-
Posts : 4151
Join date : 2011-11-20
Age : 73
Location : Brooks, Ga Zone 7B/8A
Re: Whats happening to my zucchini
I think the yellowing leaves are a result of the mildew. I would remove all effected yellowing leaves, spray and then see how things progress from there.
If I start having PM issues, I usually go in there with the clippers and remove anything showing signs of PM, to reduce the risk of further infection.
If I start having PM issues, I usually go in there with the clippers and remove anything showing signs of PM, to reduce the risk of further infection.
43 years a gardener and going strong with SFG.
https://squarefoot.forumotion.com/t3574-the-end-of-july-7-weeks-until-frost
There are certain pursuits which, if not wholly poetic and true, do at least suggest a nobler and finer relation to nature than we know. The keeping of bees, for instance. ~ Henry David Thoreau
https://squarefoot.forumotion.com/t1306-other-gardening-books
Re: Whats happening to my zucchini
Thanks for the suggestions everyone. I've gone and cut out the worst of the leaves and will start from there. Its been horribly hot and humid here for the past few week.
Re: Whats happening to my zucchini
I forgot to add that the white powder in the pic is actually sevin bug killer for some japanese beetles I found started to eat my leaves.
Re: Whats happening to my zucchini
SEVIN kills bees and can kill a colony. Just thought I would point that out, seeing as how you have blooms. http://en.wikipedia.org/wiki/Pesticide_toxicity_to_bees
43 years a gardener and going strong with SFG.
https://squarefoot.forumotion.com/t3574-the-end-of-july-7-weeks-until-frost
There are certain pursuits which, if not wholly poetic and true, do at least suggest a nobler and finer relation to nature than we know. The keeping of bees, for instance. ~ Henry David Thoreau
https://squarefoot.forumotion.com/t1306-other-gardening-books
Re: Whats happening to my zucchini
brubakes wrote:I forgot to add that the white powder in the pic is actually sevin bug killer for some japanese beetles I found started to eat my leaves.
Read the LABEL folks! It is a violation to use Sevin dust on blooming plants. You can be cited for pesticide misuse - and you could be held liable for losses if a beekeeper in your neighborhood reports that his livestock has been poisoned.
Re: Whats happening to my zucchini
Pollinator wrote:Read the LABEL folks! It is a violation to use Sevin dust on blooming plants. You can be cited for pesticide misuse - and you could be held liable for losses if a beekeeper in your neighborhood reports that his livestock has been poisoned.
I don't use Sevin, so I had no idea about this, Pollinator. Wow.
JeanneRamick-
Posts : 49
Join date : 2012-03-16
Age : 82
Location : West MI (5b)
Re: Whats happening to my zucchini
I'm wondering if the powder is not mildew, could some of the plants have SVB (squash vine borer) and are just started to die back because of it?
Lindacol- Posts : 777
Join date : 2011-01-24
Location : Bloomington, CA
Re: Whats happening to my zucchini
Typically with SVB this is what I see, sudden collapse of the entire plant.Lindacol wrote:I'm wondering if the powder is not mildew, could some of the plants have SVB (squash vine borer) and are just started to die back because of it?

http://texasgardeningadventures.wordpress.com/tag/squash-vine-borer/
43 years a gardener and going strong with SFG.
https://squarefoot.forumotion.com/t3574-the-end-of-july-7-weeks-until-frost
There are certain pursuits which, if not wholly poetic and true, do at least suggest a nobler and finer relation to nature than we know. The keeping of bees, for instance. ~ Henry David Thoreau
https://squarefoot.forumotion.com/t1306-other-gardening-books
Re: Whats happening to my zucchini
Oh my gosh. I've never seen the results of SVB; have only read about it on the forum. That's gotta be gut-wrenching.

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