Because there are no polinating insects you need to hand pollinate. Whether there are a lot of flowers pollen from them male flower does not get transferred easily. When a male flower (Flower without a small cucumber) opens you need to pull the leaves off the flower gently till its just the center then take that and gently rub it on the female flower (flower at the end of the small cucumber)

When you say there are tons of fruit are you referring to the ovary that's behind the female flower or and actual cucumber? The reason I ask is because you stated you only have female flowers and if that's the case none of the female flowers could have been pollinated to produce an actual cucumber from the ovary. If you have tons of female flowers you need to wait until you get some male flowers to pollinate them with. It's a common issue with cucumbers that they produce all of one gender flower in the beginning and then they will start to produce both and you're off to the races.

Thanks, chuckwagon009. Like I said, I'm new to this and reserve the right to be totally wrong about anything :-). But I was told that there are only female flowers on this plant, I believe implying that it does not need to be pollinated. I can see where I believe the male flowers would be, if they bloomed. But there are only females for sure.

Yes, lonestarfx. That's what I meant. The ovary. I did email Johnny's again today to tell them what happened, but when I was researching this I reached out to them and they definitely said there were only female flowers and said that the plant was "self-pollinating". I believe I read that some cucumbers are sterile and I thought that this was something that was bred into this variety.

I'd love to think that something will magically turn around, but I'm afraid it's not looking good. Shame because this plant is so healthy.

If there were male flowers I'd know what to do for sure.

FYI - Johnny's customer service got back to me. They're really good. They said "Corinto is definitely a parthenocarpic variety that does not need seed pollination". They asked me to give them more info and send pics, which I will. They already know it's DWC. I'll check in if we can work this out. Thanks again.

Lenny, I definitely saw a video recently that said "greenhouse cucumbers" do not need pollination. I'm still at the very beginning of all of this, so I don't imagine I'll be looking at flowers for a while. :) My cucumber plant is about 2" tall.

If that is indeed true and it's a parthenocarpic variety then I would say it may be a nutrient issue. What's needed to fruit properly may be deficient or being locked out. Potassium is very important in production of starches and sugars in fruit and some plants, in my experience, can just kind of freeze until they get what they need which is generally K during fruit production. I had a green chile plant in dwc that did that. Once I upped the K by about 20% it took off. I handle my nutrient management different than most and can generally see what is getting taken up by the plant as everything is not being added at once with water changes, there are no water changes, and can attest to higher P and K uptake during fruiting.

That's just my first thought. Also you may want to try to cut down the number of fruit. 100 on that plant may be just too many for the plant to handle so it shuts down. Similar to what's done with tomatoes leaving 3 or 4 per cluster to optimize size and quality. Too many and they all suffer.

Anyway, good luck. Hope you figure it out.

Good luck, mitchnc!

lonestarfx, that's good stuff. Thank you. This is my first pass with everything and, as you can imagine, I could only tackle so much. I've got 2 tomatoes, a pepper, a cucumber, 5 romaine, 3 arugula, and an aerogarden full of herbs. So I bit off a lot!! I expected to take some lumps. I did get a meter for Christmas to measure TDS, but I haven't even tried it yet. I do wish there were better written resources for a lot of this. It's hard to cobble it all together even with the internet and YouTube. I did cut the plant back last weekend, but I'm afraid it was too late. I'll see what Johnny's says but will most likely cut bait soon. Do these fruit twice? That's another thing that I read a little about but have not had a chance to go back to. If so, I'd probably cut it back further and learn more about proper nutrient balance.

Thanks!!

Nutrients are something I need to learn also. I figured I had some weeks to put it off while I was growing seedlings, but now those weeks have passed and I'm clueless. Lol

There's a lot to learn for someone that's new to this! Wow. I heard back from Johnny's Seeds. They're great. I almost feel bad because I only bought two packs of seeds from them. I definitely let the cucumber grow out of control. I've been pruning it over the last few days. Funny thing is, this plant seems to have self-regulated a bit. As it got huge, the smallest fruit shriveled up out of the gate. Now, a cucumber at the top has started to balloon in size. I'm a lot more hopeful now.

My cucumber is exactly the same size as it was 2 weeks ago. It has a little yellow "spike" pushing up the middle, though. LOL...I'm so ignorant. The seed leaves haven't changed in weeks.

Lenny, how's the cucumber doing? Any luck with fruit setting?

Mitch, I'm guessing your res temps are to blame for the stalled growth.

Hey. Thanks for asking. One cucumber ballooned up and I got hopeful, but so far it's the only one. Johnny's told me that this cucumber, which is a greenhouse variety, should be kept to one stem. I have 3 stems (like 6" from the bottom was one stem, but it branched out to 3 from there). And that all fruit should be removed up to the 6th....tier, course? I can't remember the terminology. I removed one stem, because I didn't want to take away like 2/3 of the plant. Also removed the fruit down low and any that didn't look good. And so far, there isn't much change. Do you have any suggestions? The plant still looks healthy overall. Just not much fruit growth. There's still an awful lot of fruit on there.

Try easing off the grow formula and just using micro/bloom. I know mine are happy under bloom formula only and growing great. I am not growing a parthenocarpic variety so I am still waiting on male flowers but all the fruit and flowers are very happy and plants look good.

I know alot of MJ growers use the micro/bloom only throughout their grow (veg and flower) and consider It Lucas formula. Ive tried it before on alot of different veggies and it works great, is cheap, and sets Fruit rather quickly.