Yes, you can
Yes you can. However, pickling cucumbers have smaller and fewer seeds and a thinner skin than other cucumbers. Therefore, they absorb the pickling solution better and tend to be more crisp than larger cucumbers.
No. Pickles are cucumbers that have been preserved by pickling
Just like salt, to preserve meat, vinegar does the same to cucumbers.
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Certain varieties of cucumbers have been bred specifically for use in pickling. By using these varieties, the home pickling enthusiast will end up with a crisper and more flavorful result. If growing cucumbers at home, be sure to select seeds that are labeled as "pickling" or "good for pickling" on the seed packet. Good choices for pickling cucumbers include: Pioneer, National Pickling, Saladin, Bush Pickling Liberty Hybrid, Ballerina, Boston Pickling, and Eureka Hybrid.
Making pickled cucumbers aka pickles.
Plant cucumber seeds that specifically say they are pickling cucumbers. Then pick the small ones for Gherkin (small, whole, sweet) pickles. The recipe on the pickling lime package is a real good one.
Yes cucumbers will climb a trellis. It promotes good air circulation and the cucumbers will have less rot and a more uniform shape. It will also be easier to harvest.
during the pickling process, things shrink, which also causes the warts
Any NaCl.
Sure, they would be good for picking. Whether they are good for eating is another question.
The recommended pickling ratio for preserving vegetables like cucumbers is 3 parts vinegar, 2 parts water, and 1 part sugar solution.