Climbing bean Caseknife outgrows its wigwam. This is a very old variety, known to have been in cultivation by 1820. It grows to about ten feet tall. D'oh!
It's really only when you delve into the world of heirloom/heritage beans that you realise just how boring the choice of beans is in most UK garden centres. It's not so bad for Americans, who are used to having a much more elaborate range. But in the UK you have to search around to find the interesting ones. Until a couple of years ago the ubiquitous Blue Lake was the only climbing variety you could find in most catalogues (it is a heritage variety though). Now there is a much better selection. But you still don't see many of the wonderful varieties intended for shelling out and eating the actual beans rather than the pods. These shelling types are often very beautiful, and so diverse.
Large beautiful flowers on Spagna Bianca, which masquerades as a butter bean
Last autumn I posted a picture of some "butter beans" called Spagna Bianca which I ordered from Seeds of Italy and am now in the process of growing. Butter beans are rarely grown in the UK because they're too tender for our climate, but I'm fairly confident this is not actually a butter bean. Neither is it a climbing French bean, which is what it says it is on the box (yes, these beans come in a box rather than a paper packet). French beans (Phaseolus vulgaris) are easily recognised when they germinate because the bean itself rises out of the ground on a stalk and the seedling unfurls from it. With Spagna Bianca though, the seedling emerged straight from the soil and the bean stayed resolutely underground. So it's definitely not a French bean. It looks to me like a runner. It has runner-type leaves and flowers and growth habit. Gawdhelpus, it'll be cross-pollinating like billio with next door's crop.
Ah well, between us we'll end up with one heck of a gene pool.
And now for something completely different.
These really are French beans. From left to right: Purple Queen, Purple Prince, Early Warwick, Dog Bean.
Shortly after being photographed this exhibit was eaten. Purple Queen was probably the best tasting, but of course it lost the lovely purple colouring when cooked and turned a dull dark green. Dog Bean also had a nice refined flavour. Early Warwick had a really strong no-nonsense old-fashioned beany flavour, and a firmer texture and rougher surface than the others. Purple Prince had the least interesting pod flavour and was already a bit stringy, but that's not altogether surprising when this variety has been bred for its stunning and unusual purple beans rather than for eating the fresh pods. You can probably see in the photo that it has attractive slate blue mottling on the outside of the pod ... but this also disappears with cooking.
And here's another French bean still a way off being ready to pick ... Canadian Wonder, introduced around 1873, which has large rose-pink flowers and creamy buds and should eventually produce some nice dark red kidney beans.