[sazzy123]

do potatoes grow, i have some in tubs and they are about 2 1/2 foot tall and bushy!!! they went in in feb...

[DD.]

Generally not as tall as that!

Are they inside? Is that the height of the foliage, or the height of foliage plus the tub?

[sazzy123]

yes they are just under 2 1/2 ft not including the pot..... 

[DD.]

Are they outside? (Sorry about the 20 questions!).

[sazzy123]

Yep outside

[DD.]

Blimey!

Probably won't grow a lot taller if they've been in 3 months.

Have they flowered yet, or have you had a scratch around to see what lies beneath?

Earlies, I take it?

How many questions do I have left?

Darn it, just used another one up!

[WebSiteEvo]

My 1st earlies are about that size also and buds are forming nicely. Not checked on any spuds yet, but are hopping to get some soon.   

[gobs]

I think eventual hight varies with variety. Some main crop go to 4-5 feet.

But the very early planting - less light conditions - would pull a bit on most of them , I'd think.

[SG6]

Last year my potatoes grew stems that were just over 6ft long. They all fell over and were awful to manage. The cropping was pretty poor also.
This year I have gone bcack to pot. So far 2 pots have grwon well but not as tall as yours, but they are still going.