Most Abutilons will suvive Zone 8 winters. A few "hardy" types take it in Zone 7.

I've never heard of one for Zone 6.

But if you grow it in a large container, you can simply roll it into the garage during the coldest nights and bring it out during the day.

I am totally surprised that your Brugmansia survived the winter (albeit "mild") in zone 6.

Joe

I'm in Zone 7. I have yet to have any Abutilon, "hardy" or not, overwinter.

ljr:

Many of the hybrids that include Abutilon megapotamica are hardy to zone 7b.

Abutilon megapotamica, itself, is hardy to 7b and it's hybrids 'Bella Coral', 'Bella Salmon', 'Canary Bird', 'Huntington Pink', 'Kentish Belle' and 'Marion Stewart' are, as well.

Not many people grow these hybrids because the flowers are smaller than typical Abutilons and the plants aren't as upright.

Joe

Joe

My Abutilon 'Thompsonii' (not sure of spelling) is hardy into the mid-20's. It won't overwinter outdoors. It makes a decent pot plant over the winter if you watch for bugs.