I saw these types of leaves on my plants and I was wondering what problem this is.
This looks like Angular Leaf Spot.
This article will help you.
https://www.gardeningknowhow.com/plant-problems/disease/angular-leaf-spot-on-cucurbits.htm
showing on the leaves, what does this cucumber plant need? Also the cucumbers are bitter
I’m sorry wrong picture...but this bean pole...and this shows a problem too
We haven’t been keeping up with our square foot garden
Yes, this is past ripe.
Sometimes you can use a ripe cucumber for relishes; but if it is mushy I would just compost them.
I want to stay organic in the veggie garden. The dahlias are being eaten a lot!
Spraying should be preventive in nature or early intervention, not waiting for advanced infestations and infections. I monitor daily to recognize an early infection or infestation and use a general purpose 70% neem oil (repellent) and pyrethrins (contact, knock down) tank mix and spray every two weeks. Insecticidal soap is good for an active pest infestation, but has more issues of concern for applicator safety (eye burn damage) and foliar burn of some sensitive plants.
https://www.gardeningknowhow.com/special/organic/natural-home-pesticides-organic-garden-pest-control.htm
Small ones are chomped but the large cukes are literally scooped out. We are trying to figure out if it's a squirrel or a rabbit based on those large front teeth. Could the squirrels be climbing a 5' fence and eat cukes one after another? Your thoughts please.
You'll have to catch the critter in the act to know for sure what is eating your cukes. Don't rule out raccoons or groundhogs; those guys can climb fences and dig under them. Critters seek out cucumbers and tomatoes when they need water. The following article on raccoon control will also control rabbits and squirrels. For rabbits, fencing should have holes less than an inch in size. https://www.gardeningknowhow.com/plant-problems/pests/animals/getting-rid-raccoons.htm
I have pulled up my cucumber plants and zuchini plants and the roots have been so bad, no wonder they were wilting and dying. They were as large around as a big cigar with nematodes. My entire garden is not doing very good. How or can I remedy this before next year's garden season in April?
This can be quite a challenge to overcome! Luckily, there are quite a few plants, and remedies. These two articles will help:
https://www.gardeningknowhow.com/plant-problems/pests/insects/root-knot-nematode.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects/nematode-control-with-plants.htm
White powdery mildew on cucumber and squash. Please suggest a treatment and identify a cause if possible. Thanks
This is very common. It is usually due to high humidity or overwatering. You should only water when the soil is completely dry down to about two inches.
The cure is simple, and there are many ways to do so. Neem oil is my "go to" but there are many others.
This article will help: https://www.gardeningknowhow.com/plant-problems/disease/get-the-cure-for-powdery-mildew.htm