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Butternut fruits turning yellow!

Posted: Fri Jul 19, 2019 11:33 pm
by Grandma99
Maybe all small fruits looked like this and I never noticed but I don't think so. I notice that the newer smaller ones are looking like they are in trouble - yellow and a black spot at the end. Is that 'blossom end rot'? Or is that only on tomatoes? I thought my first fruits looked light green when very small (similar to the one above although it is getting bigger). But now the newer small ones are looking yellow!

Please see attached! Can you help me figure out what is going wrong or am I being a worrisome plant-parent for nothing?

Re: Butternut fruits turning yellow!

Posted: Fri Jul 19, 2019 11:55 pm
by Grandma99
Actually, this might not be the best forum for this question. My Butternut are in 10-gallon airpots outside. If it should be in a different forum, could someone move it for me? This forum seems mostly directed towards indoor plants in pots. Sorry if I posted it in wrong place. :)

Re: Butternut fruits turning yellow!

Posted: Sat Jul 20, 2019 12:42 am
by pepperhead212
Those are butternuts that have not been pollinated, or very little, at least. Some people this season are seeing a reduction in pollinator numbers, and are having to hand pollinate the squash, and similar plant. I have one - the bottle gourd - with a bunch of female blossoms this last week, but no males, so I couldn't even hand pollinate them! (now there are plenty of males out there, finally). Some people have had this happen with winter squash, too, but I usually get a bunch of males well before the female blossoms. If pollinators are plentiful, you'll see them in the open flowers, esp. in the morning, so if not, hand pollinate by rubbing a Q-tip around the inside of a male blossom (the ones on long stems), then inside the female. Too late for those in the photo, but be sure not to let any get like that again!

Re: Butternut fruits turning yellow!

Posted: Sat Jul 20, 2019 1:44 pm
by Grandma99
Oh I am so very grateful to you, Dave! I was so worried! Thank goodness for Google too! The first link showed pictures of a male and female but I couldn't spot the difference so I found YouTube videos showing, not only how to tell the difference, but how to pollinate! How very cool! https://youtu.be/oT2je60YyyE

I'm so tickled to know I haven't killed my beautiful butternuts! Thank you again for helping a newbie! Oh, one last question ... should I clip off those yellow fruits, as I would yellow lower leaves or does it matter?

Re: Butternut fruits turning yellow!

Posted: Sat Jul 20, 2019 1:58 pm
by pepperhead212
I would clip them off. They are never able to recover, as the flower will never come back. And those things might be rotting, and attracting varmints.

Re: Butternut fruits turning yellow!

Posted: Sat Jul 20, 2019 2:00 pm
by Grandma99
Thank you! I shall do that right now! I'm growing two in 10-gallon pots and there is a cattle panel trellis but they're already outgrowing it and nowhere for them to go! I LOVE BUTTERNUT SQUASH! :-) Next year, I'll add a trellis across the top of my entire patio!

Re: Butternut fruits turning yellow!

Posted: Sat Jul 20, 2019 2:15 pm
by Grandma99
Well, I just removed 18 yellow withered fruits. Major bummer. :shock: But now I know and I'll never let it happen again! I'm now turning to 'how to draw pollinators' to my garden to help me out and for next year. :D

Re: Butternut fruits turning yellow!

Posted: Sat Jul 20, 2019 3:35 pm
by applestar
Now that you’ve removed those fruits, the plant might decide it needs to grow more fruits. You could hand pollinate them if it does.

Re: Butternut fruits turning yellow!

Posted: Sat Jul 20, 2019 3:39 pm
by Grandma99
Oh I sure hope so, Dave! And I'll be ready for it. In fact, I've already pollinated four females! Maybe the bees already did it but I'm not taking any chances. Such fun! To think that I've lived in big city my whole life and never knew anything about growing vegetables ... oh what I've been missing out on! :-()

Re: Butternut fruits turning yellow!

Posted: Sun Jul 21, 2019 12:04 am
by pepperhead212
Hopefully it will all work out, @Grandma. Here's a photo showing that you aren't alone, so don't feel bad! Those bottle gourds I told you about, that had a BUNCH of female flowers, with no males, finally got a munch of males, so that I could hand pollinate them. Here's a photo of one of mine turning yellow, then rotting. I cut at least a dozen today! They had those dried up blossoms on them, so no way to pollinate.
ImageUnpollinated bottle gourd. by pepperhead212, on Flickr

On a good note, my wax gourds got their first blossoms, and they are male! That's what usually happens with other squash, at least in my garden.
ImageFirst wax gourd blossoms - males this time! by pepperhead212, on Flickr

Re: Butternut fruits turning yellow!

Posted: Sun Jul 21, 2019 12:08 am
by Grandma99
Wow, and with me, when I decided to be sure they were all pollinated, can't find any females open but 8 males open! I wish I could take their 'thingy' and save them in a glass jar so I can pollinate the females when some finally open! Maybe all the females are done; I sure hope not!

There are several 'buds' at the base of the plant - they look like rosettes. I'm hoping they come on to be females, now that I understand how it works. Good luck to you with your gourds and thank you for showing I'm not the only one! Happy gardening!! BTW, I plan to check them three times a day to catch them to be sure I never miss another one!