[Lavender lady]

One of the potato stems has large oval growths with small leaves growing from the axils what is it?

[peapod]

Hi LL and welcome to the site

A pic would be great if you could?

[Lavender lady]

Sorry unable to submit photograph.  Tried but won't accept it.

[Ice]

Does it look like a small green tomato?

[DD.]

Are these at the base of the stem, near to the ground?

If so, it's quite common and just the spud trying to grow more.

[Lavender lady]

There are four of them growing out of the axils along the stem two of them are oval and two are pear shaped they have leaves growing around the tops. They are not seed pods from the flowers or new potatoes forming.  I would post a photograph if I could manage it.

[arugula]

I would post a photograph if I could manage it.

Just in case you're not sure how to, Lavendar Lady:

Posting pictures in a thread

Hope this helps.

[Lavender lady]

Just tried still won't let me says that the picture is too big.  Its only from the mobile so I thought it would have been alright.

[Ice]

You can get free picture resizer downloads on the web or use photobucket to store and resize them.

[Diddy Gardener]

What I do is once they're on my pc, I open with Microsoft picture manager, I then compress them there... dead easy 

[DD.]

How to do it in more ways than one, including downsizing, is all covered in the link that Argyllie gave.

[pink aubergine]

Was wondering if it could be Aminopyralid damage-
http://www.allotment-garden.org/garden-diary/261/contaminated-manure-aminopyralid-update/
The straw in the manure is contaminated by herbicide use, we've had a few cases on our site this year.

[gobs]

Sounds like just potato tubers, anyway.

[Lavender lady]

I've done a lot of research on aminopyralid so haven't  used any form of horse manure on my plot for at least four or five years.  Been very busy today so haven't had time to look into trying  to post a photograph but will try again tomorrow.

[Lavender lady]

Third Attempt to post picture.