One of my new plants this year has been the hyacinth bean or lablab bean. For those who do not know, this is supposed to be a heat-loving tropical plant so it would make sense to grow it in the polytunnel. Well I've now got a tropical jungle but no beans and even worse, no flowers.
Picture of beans growing in poly.
(http://downtheplot.com/images/hyacinth_bean_1.jpg)
As I grew too many plants I stuck the leftovers on a wigwam on some surplus space on an adjoining plot where they got watered if it rained, ravished by slugs, left unfed and only weeded on an occasional basis.
The result:
(http://downtheplot.com/images/hyacinth_bean_2.jpg)
(http://downtheplot.com/images/hyacinth_bean_pods.jpg)
Moral of the story- Don't read books.
Can't get the pictures but don't really need to, sods law! I take cuttings from shrubs and follow instructions to the letter - nothing! Stick prunings in to support floppy perenials, result - shrubs where I don't really want them! ::)
Was gazing at my hyacinth beans yesterday. Growing up a fence, outside. Very rampant - but must be related to your polytunnel beans, not a flower in sight!
But will try again - your wigwam is lovely.
Could it have been a lack of humidity in the polytunnel?
I have two butter beans (Spagna?) in the big greenhouse and they are attempting to take over... even a massive B'Fly infestation and an attack by some "Looper" type caterpillars hasn't stopped them... got some pods though.. Keep trying Lab-Labs but no joy yet... :-X