bizarre looking butternut squash

On my little lottie I have 2 butternut squash plants, they are doing really well and huge.
The first fruit appeared about 2 weeks ago and has since grown at a phenomenal rate...it is long and pale green with darker stripes (not your typical butternut colour or shape!), it looks very much like a pale marrow and is about a foot long (no lie!), the plants are now producing other fruit that have the more typical butternut shape but are still stripey green.
Is this normal? if so, will they turn yellow when ripe? (I'm expecting that to be Sept-Nov).
Thanks

 

They'll retain the stripes Alison. We bought a packet of squash seeds a couple of years ago and they produced all manner of shapes and stripes as well as some plants of the 'normal' variety. I now ensure that the seeds I buy are the true butternut type. Though the fancy looking ones are just as tasty.

 

thanks Dave, the seeds are cheapy wilko ones, but the picture on the packet look like 'standard' butternut squashes...how do you tell which seeds are true butternut type

 

They all look the same to me and I doubt if anyone could tell the difference ,

 

Thanks Shiney, that first one looks just like mine (in colour), I shall pick the largest and do as you say, I shall try to get some piccys of it on here later!

 

Ooops, I cut them before reading your last post, oh well, hopefully they'll be ok.
Here's a piccy of the 2 I picked, as you can see one is the standard shape and the other looks more like a marrow!
Will they be ok if I leave them in the greenhouse to ripen?

 

brilliant, thanks

 

I've sometimes had the green stripey ones too Alison that didn't ripen to buff, but they tasted fine.
I leave my squash on the plant to ripen and don't harvest them til first frost is expected. As said above cut them with a good 2 inch stalk on them. If they're well ripened and stored they keep for months. Butternut squash for the winter. YUM.

 

I know, I love butternut squash, this is the first time I've tried growing them myself