With all male flowers and no females, sounds like the plants are stressed. You'll need to think about and investigate everything that's occurred to date. then tell us more of the details.

Well, most of the blossoms will be male. Were you perhaps transferring pollen male-to-male? The soft fruits you got is more worrisome. You might be overwatering...

gardener, the same thing has happened to me. Out of 4 plants, only one has produced and that was just finally last week (planted in late April I believe)and I have had 2 total squash.

My plants started with female blossoms, then all male, and mostly males since. The males/females will not blossom at the same time, except for the one plant that apparently got 2 females which I didn't see see.

I have posted here about this numerous times, and get responses like "be patient" or "pollination problem" (have tons of bees) or "container too small" (4 gallon) or "container might be too hot for roots" (but two of the containers are white) or "not enough fertilizer/water". White I appreciated the respones, I just don't think any of these answers is the key to my lack of squash.

As far as bees/pollinators, they can't pollinate a female that isn't there. I would love to know why this has happened. You're not alone. I have seen a few other posts similar to this. It's so perplexing, especially when you hear the zucchini jokes made by people have so many. :(

I have concluded that I have either barren plants or I am doing something wrong which I haven't been able to fix. Sorry you are experiencing this, too. I still take care of the plants and watch them closely, but have pretty much given up on getting squash, especially now with SVBs arriving. If I do get some, I will be pleasantly surprised but no longer have expectations for this year. Maybe next year I will be luckier. Good luck to you with yours! You're in NYC so maybe your issue really is one of "patience"?

P.S. Is it way too late to plant more from seeds?

Check the maturity date on the seeds you have. You might still have time being in zone 7. I just started round 2 myself a week ago, zone 5/6. ( have hoops to put over my raised beds, just in case)

Thanks to all for suggestions - we have had record breaking amounts of rain, so maybe that is it - although the Earthboxes are self-watering/resevior containers with soil less mix so, not sure if water is the issue. Definitely not maturity date problem, since the plants are at maturity date. It's something pushing all male flowers and no female. And, yup, just started round 2 planting, but was hoping to figure out what I did wrong so it won't happen again (and, fyi, plants I and neighbors planted in ground all died of to much rain death without bearing any fruit).

Low calcium in your soil(or soil-less) mix for the container?
Not enough sun?

Those would be my two choices for no female flowers in a container-grown plant.

grew to about 4 inches then got soft and rotted.

That is BER (blossom end rot) and there is a FAQ here about it.

4 squash plants in one Earthbox? That is way over-crowded for any production - 2 plants max. The plants would very quickly be root-bound in the container with no soil left to provide either nutrients or water. That condition causes all male production only and fruit abortion if any even develop because the plants can't support any fruit and stay alive.

Dave

I think it's lack of sun. As for 4 plants in EB, that is what the EB company suggest - having great success with other plants per EB co. recommendations, so don't think that's it.

I have an EB too and 4 squash plants in one EB is definitely not too much. That's the recommended amount and its worked for lots of people.

Did you plant an EB kit that came with dolomite and fertilizer? I bring that up because someone mentioned calcium so if you didn't include dolomite at planting that could be part of it. At this point you can add hydrated lime to the watering reservoir.

How much sun are your plants getting? I have 2 squash plants and they did horribly when I was hit with heavy June gloom but once the sun came out and they got between 6-8 hours they really grew wildly. So move the box around if you can so it gets adequate light.