Morning Glories: How Do You Isolate 1 Flower In A Swarm?, 1 by Xeramtheum

Xeramtheum wrote:
My swarm of Cordatotriloba is putting out variations on a theme on flower shape. So far they are small changes, not worth noting. I'd like some suggestions on how to isolate a flower in a swarm so I can collect seeds. Last year I tried a twist tie and never found it after a month of sitting in the elements. I need something more robust that will not succumb to sun, wind and rain.

The Canna leaves at the bottom shows what I'm up against.

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