Thanks for this, I'll go have a look! I daren't grow outside here, we have nosy people visit who would know what canna looks like... not to mention any grow here indoors or out isn't legal.
Mine are in the veg drawer of the fridge. They take up about a quarter of it
I really need to try it out. I've had a pdf of it for years but I'm not very organised outdoors so I've never got round to it - and I don't have a dedicated patch for veg as the garden is very haphazard! Can I still plant peas this late?