My Clivia stays indoors year round. When I say that I ignore zones **, it basically means that I grow things that are out of zone for here - i.e. Zone 9 or 10 stuff. But they do not necessarily go in the ground. Virtually all are in pots. I do push the zone envelope - like 7 Crape Myrtles in the ground. Supposedly Zone 6 is their extreme. Lotsa other Zone 6 stuff - mostly near the foundation. Heck - some cannas in the ground since 2010.
** My phrase there was "Always pushing the Zone envelope" and Mellanie over in the Butterfly group one day said, "David you don't push zones, you ignore them". It stuck. I was telling her I wanted to buy a Firebush. Obviously, had I, I would have to lug it in. But I have tons of stuff I lug in.
For example (from Post Moving stuff indoors - Day 1:
6 ' Tropical Hibiscus
5 ' Tropical Hibiscus Standard
7 ' Weeping Fig Ficus
3 x 25-30 year old tender Agapanthus - very large. Repotted 4 wks ago
Spider plant x 2 (one with a whole brood of babies)
10 year old Lipstick plant
5' var. small leaf Shefflera
3 x bougainvillea
3 YO Lantana
30 YO 6' + Jasmine
2 x 10 + YO Asparagus Fern)
3 x Brunfelsia
3 + foot citronella Geranium pruned by ~ 18 "
And on Moving inside Day 2 I did:
The deck - ck (~ 20 plants)
The screened in porch - ck (~ 30 plants)
My pretend greenhouse - ck ( ~ 60 plants)
This included:
Bird of Paradise, climbing Ylang Ylang, two tropical Gingers, , myrh, Oleander, Brugmansia (3), frankincense, Dierama and Dietes. And lots more.