Dahlia "Bishop's Children" in pots

I have grown the above dahlias from seed and they are growing nicely.
Last time I grew them I put them in the ground, but this time I thought I might try some in pots. I have pots around 12 inches in diameter and thought perhaps 3 or 4 plants in each one, as they are a comparatively small variety.
Too many, or can I fit a few more in ?
Any thoughts welcome .

 

I think 3-4 would be ok.

They do increase in size year on year.
I sowed this one about 5-6 years ago and it's now a substantial plant about 4ft tall and wide-


Some of the colours can be a bit drab, so I replace them.

 

Hi,

They grow to 2-3ft high and about 2ft wide so we would only put one in a 12" pot.

Would also choose a pot or tub with even width sides rather than a narrowing taper to the bottom as that type can be easily blown over when you have a tall plant in them.

You can put two or more in such a pot but they will just compete with each other and only give a reasonable display for a short while, while just one should flower until the autumn frost.

Try both methods and see which is best ...?

 

Thanks @Pete8 and @ricky101.
I might well try both methods, one in each pot .
Could be interesting .

 

I would put one in a pot too. I grew mine in the ground and the tubers got quite big. I left some in the ground and they survived the winter.

 

No more than one per pot, and be prepared to move them on to bigger pots if you keep them for further years. I grew some from seed some years ago and some of them got to be taller than me (I'm 5'2" or thereabouts). I dug one up because it was really too tall for the spot and the tuber was enormous, over a foot across and nearly as deep.

 

Thanks @JennyJB and @Busy-Lizzie .
I think the name makes me think they're a dwarf variety !

 

I've been growing them for years.
The size and colour can be very variable.
Year 1 I've had them get to between about 1ft and 2ft
By year 4 they're about 4-5ft

Most colours are vibrant and tropical but some will just be a creamy white.
Most are single flowered but some doubles appear too.