Do they climb up a surface on their own, like morning glories or sweet peas? I have never seen one on a trellis, so I wondered.
Do climbing nasturtiums have tendrils?
I have never grown "climbing" nasturtiums. BUT, I understand that the climbers have "coiling leafstalks". They can "climb" up to 6 feet. I would take this to mean that they need some kind of trellis to attach to.
Good Luck!!
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