My cucumbers are not turning green; they are staying white, then yellow. You mentioned a yellow cucumber may have a deficiency.
I answered this but it didn't show up. Do you have them planted in full sun? They require it. The only other answer I can come up with is that there IS indeed a white cucumber. If you purchased regular green cucumber seed, this could be a labeling error. Have you tried eating one while it is in the white stage? You may be pleasantly surprised?
Are they in full sun? They are sun lovers. Only other answer I can think of is that there are white cucumbers available. Could be a packaging error if you bought what was labeled as regular green ones. Have you tasted any of them while in the white stage? Might be worth a try.
I moved my cucumbers to a different part of the garden this year as part of my 3 years rotation and they are dying too soon. Once the plant vines were about 2 to 3 feet long, the leaves started to get yellow spots and drying out. Even with enough watering. At one point it was only at the base of the plant for the longest time and now it's making its way to the flower tip of the 8 to 9 foot vines. There is about 3 feet of nice green vine left for each plant, but I feel they will soon die too. Can I savage what I have left? I know there is a disease like this. Please help! I have harvested about 65 to 75 cucumbers so far. The ones now on the vines are yellowing prematurely too fast. Not even big enough for harvest. I am growing "Burpless" this year instead of Marketmores. I never had this problem with Marketmores.
Unfortunately, it sounds like it may be wilt. This article will have more information:
https://www.ag.ndsu.edu/pubs/plantsci/hortcrop/pp747w.htm
We have always had success in planting cucumbers in our garden, harvesting several a day in the summer. We live in NJ. However, this year our cucumbers are not growing. We have tons of yellow flowers, the leaves look healthy, but the only cucumbers we are getting are small (pickle size) and already yellow and bitter. It has been abnormally hot here this past month; however, we do have an in-ground sprinkler system that waters the garden every other day. Any idea what is happening?
It sounds like a pollination issue. With the heat and the extra sprinkler watering, the pollinators are likely not able to get to the flowers. You will need to hand pollinate. Cucumbers are identical to melons on how they pollinate, so this article will also apply to cucumbers:
https://www.gardeningknowhow.com/edible/fruits/melons/hand-pollinating-melons.htm
How do you know if your cucumber plant has a virus or it's just overwatered? It is the only plant in the garden that is yellow and all of the cucumbers are half developed and yellow. When picked and cut open, they seem almost gassy. A lot of the vines look to be dead, but at the end have green growth starting. What could it be?
It sounds as if you are dealing with cucumber beetles. These articles should be of help:
https://www.gardeningknowhow.com/edible/vegetables/cucumber/cucumber-beetle-control.htm
We grew 2 varieties of cukes last summer and had a huge harvest. This year we had many volunteers come up. I put up trellises and let them grow. They have spade-shaped leaves and vigorous vines and are now producing white flowers- but no sign of any fruit. Is it possible that an infertile hybrid was created?
It's possible, but your problem may actually be a lack of pollinators for your blooms. You can do that yourself with a small paint brush. For successful veggie growth, do try to include some plants in and around your garden that draw bees, hummers and other pollinators.
My cucumbers have lots of flowers but they're not getting any fruit.
Sounds like a pollination problem. Cucumbers have male and female flowers, but only male blooms appear on young plants. As they grow, the female flowers will appear, and bees will carry the pollen from male blooms to female blooms. Bee activity can be low when it's cool or when pesticides have discouraged them from the area.
If there appears to be little pollinator activity, you can pollinate by touching a male bloom with a cotton swab or small paint brush, then touching a female bloom (with miniature fruit below its petals). If not fertilized, the fruit will not enlarge, and the flower will drop from the plant in a few days. The blossoms of both sexes are open and fertile only during the morning hours of one day.
Sometimes when I slice cukes from my garden, there are holes that seem to run the length of the cucumber. I've never found a worm. What could be causing this?
What your describing suggest your cukes are reacting to uneven watering. If the middle has not filled out the fruit is not fully matured as well. Normally insect damage of cucumbers don't appear as you described.
This article may be of some help to you:
https://www.gardeningknowhow.com/edible/vegetables/cucumber/deformed-cucumbers.htm