What is the amount of Hydrogen Peroxide to 1 gal. of water for a spray solution to be applied to the leaves?
Straight 3% peroxide can be diluted 1 to 1 with water (1 part peroxide to 1 part water). In addition, a weekly spray of milk at a concentration of 1 part milk to 9 parts water may significantly reduce the severity of powdery mildew infections. Neem oil is also effective in treating powdery mildew.
I will be going away in August for two weeks and want to know is it bad for the cucumber plant to be harvested too soon? What about watering? Can it last without water for that long?
You can harvest your cucumbers at a small size such as when you pick them for pickling.
I would recommend you enlist a friend or neighbor to check in on your garden. Your garden will most likely need watering during the week if no rainfall is predicted.
https://www.gardeningknowhow.com/edible/vegetables/cucumber/how-to-harvest-cucumbers.htm
My cucumbers have prickly bumps on them. Can I pick and eat them like that? They seem to be ready otherwise.
Most cucumber varieties have these prickly things on them and are quite safe to eat. Normally, the little prickles come off once you clean them.
After picking my Burpless cucumbers, I take them in the house. A few hours later they are all starting to shrivel up. Do they need to go straight to the fridge after picking?
Cucumbers are best fresh but they may be stored in the crisper for up to three days. Commercial growers use wax coatings when storing cucumber fruit to prevent moisture loss. You can just place the fruits in loose plastic or perforated bags. Avoid stacking them and keep them from smashing against the side of the crisper drawer.
Pickling cucumbers will keep a bit longer and do not necessarily need to be refrigerated. Store them in a cool, dark place for up to five days before preserving them.
Can you graft a cucumber and a zucchini plant?
It is possible.
Here is a link with more information.
https://cals.arizona.edu/grafting/howto/cucurbits/selecting_cucurbit_rootstocks
Something is cutting the leaves off my cucumber plants. What is it and how can I stop it?
There are several pests that could be doing this, such as slugs, cucumber beetles, and cutworms. Regardless of the pest, neem oil should help. Here is more information: https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm
These articles should help pinpoint the culprit: https://www.gardeningknowhow.com/plant-problems/pests/facts-about-slugs-and-how-to-kill-garden-slugs.htm
https://www.gardeningknowhow.com/edible/vegetables/cucumber/cucumber-beetle-control.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects/get-rid-cutworms.htm
I would like to know how to connect a cucumber tendril to my chain link fence in the backyard.
Normally all you have to do is direct the vine in that directions and it will eventually attach itself. Occasionally, you may need to gently coax it along by carefully wrapping it around the fence, but this is rare. They should do this on their own. Here is more information: https://www.gardeningknowhow.com/edible/vegetables/cucumber/planting-cucumber-fence.htm