I also love morning glories. In many temperate zones they are banned as
invasive because they don't die back. In my zone 5 they act as an annual.

"Bernard Golden" wrote in message
om...
I love Morning Glories. Our local parks (we're located in Silicon Valley)
have them trained up fences and they seem to be perennial. However, I have
grown some and they have now died off. I would like to have a permanent
growth of them on a trellis.

Are there particular varieties that are perennial?

TIA

Bernard Golden