Overnight, the ones I had staked up previously pulled their stakes from the ground. Many of their stems were snapped. Tequila makes glads drunk AND aggressive just like humans, apparently.
I lashed them all up to the fence behind this morning with one looooong strand of tomato velcro (1/2" roll of green velcro that I use for tying tomatoes) but it's not what you call "garden tour ready."
Thinking I might add a little fence in the FRONT and SIDES of them next year to box them in a bit.
Oddly, the first year I planted glads, I put five in a terracotta pot and those came up nice and straight, bloomed beautifully and never tipped over. 
(Of course, I forgot to pull them before the weather got cold and the corms rotted. I never intended to pull the in-ground ones and, fortunately for me, they have thrived on the neglect... except for becoming terrible lushes, of course. 
)
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