Bean and gone

I don't know what happened, it was OK a couple of weeks ago, but the bean bit the dust. I assume it got eaten by slugs and snails who were clever enough to climb up the sticks I was using to support it to get to it. Here's its whole life story.

Seedling

Leaves completely removed by slugs, slug ring added as protection

The slug ring works and the bean makes a comeback

Flowers!

The bean reaches a good size...

...but is then attacked by black fly.

It survives the black fly, but something eats all its leaves

So I dug it into the ground when I cleared out the bed to retain the nitrogen it was storing in its roots.