Blue Flowered Perennial??

Hi peoples, any ideas on this one, I got it off freecycle a few months ago and its now flowering; it's in a large pot at the moment until my 'perennial' bed has been dug.

It stands about 2ft tall and the flowers are a slightly deeper/stronger blue than in the picture..and the bees love it

Thanks in advance :thumb:

 

I am not entirely sure Marley.


This picture of Physostegia from the net seems to be much more ordered. Also I always think of Physostegia as being pink, though maybe there are other colours.

My first thought was Echium vulgare, but I don't think it is that either.

 

I have just googled the 'Obedient' plant and can only find white's and pinks (some near purple) and as you say Peter the flowers are more ordered and tightly 'bunched'.

I'm pretty sure I have a white one too (also off freecycle :thumb, if it is one it's definitely not the same as this blue flowered plant.

I'll try and get a better picture when it's light outside and I'll take one of the leaves too to see if that helps :thumb:

Thanks so far...:thumb:

 

Ok, here's a few more pics :thumb:

 

Thank you for the new pics. That really helps.
I believe it is Lobelia siphilitica.

http://www.google.co.uk/search?q=lo...&source=og&sa=N&hl=en&tab=wi&biw=1272&bih=501

http://en.wikipedia.org/wiki/Lobelia_siphilitica

 

That looks like the one, thanks Silver Surfer :thumb:

 

I am sure you are right Silver Surfer. In which case it should grow to about 3 feet. Also, whilst many Lobelias are a bit borderline hardy, L syphilitica is very hardy. I lift my other Lobelias over the winter and put them in a cold frame - but I never lift syphilitica.

 

Thanks guys for your input, Peter I'm sure it would reach 3ft tall in the ground, perhaps being in a pot at present has curtailed it somewhat; lovely flower though :thumb: