I had the same problem a few years back, after I had grown cucumbers in the same lot for 2~3 consecutive years. Now I know that each year I have to find a place in the garden where no-cuke had been grown for the previous 3~5 years. Hope this will help.

Try below from Victory seeds, or others that may carry same. In eastcoast 'sandy' central Fla, I liked the Pointsett 76, type. Both are open pollinanted, and NO mention of Heirloom status, sorry... Plus not certain on the pickler either. Marketmore 76 70 days  Bred by Dr. Henry M. Munger of Cornell University and released in 1976. The fruit are eight to nine inches long and dark green in color. They have a sweet mild flavor and are very disease resistant (downy mildew, powdery mildew, scab, cucumber mosaic virus). Does well in cool climates. During our 2003 growing season we had some extremely hot (100F) and dry weather here in Oregon. The cucumber in the picture was picked in the midst of our heat wave and was not bitter at all. It remained of excellent flavor.

Pollination is a problem, but I think the main problem is that no flowering is even taking place to begin with. Interesting update on the situation - I mentioned that until yesterday I had only seen 1 striped cucumber beetle, and then killed 3 in the morning... well I went out on my nightly slug hunt last night and ended up squashing about 10-12 more SCB's, 6 of which were coupled up and going at it on the leaves. Rest assured I busted in like a disapproving father and brought an end to their shenanigans. No signs of any eggs this morning, and only one more single beetle seen/squashed. SCB damage to the leaves seems very minimal... no wilting going on, but still no flowering :/

Hi DL, You only have to worry about other cucumber varieties(Cucumber sativus.) Cucumbers will not cross with squash, melons, or fruits commonly called a cuke that are other species. To be absolutely sure of no cross pollination, it is recommended that different cucumber varieties are grown 1/2 mile apart. If you must grow other cucumbers, you will need to cover or tape the blooms shut the day before the blooms will opening to keep pollinators away and then hand pollinate. When it comes to cukes, you have to make sure you dab pollen from male blossoms onto the female ones. Since male cukes flowers don't make fruit, you can just break them off and rub them onto the female ones. Cuke flowers open in the morning and you need to get out there and get it done then, and then recover or re-tape. I personally find growing just one variety each year, a much easier thing to do. To save seed from a cucumber takes a little work too. You need to let them get fully ripe on the vine. They will turn orange. Then you pick them an let them sit for at least a couple weeks inside. Once you do that, you need to ferment the seeds like you do for tomatoes. I hope this helps. Also if you are interested in saving other veggie seeds or want even more in depth info, looking into purchasing Seed to Seed by Susanne Ashworth. I got it for a present and love it. Remy