I'm extremely confused with gladiola hardiness... I just got some WONDERFUL corms from Old House Gardens, they bloomed beautifully, both 'Mary Housley' and 'Atom', both great shows, turned into nice sturdy plants..however, I'm confused as now that I look online it shows that both are only hardy to zone 8, and I'm way far from that zone, however my family has had a patch of gladiolas in our garden for more than nine plus years (pretty sure) that return faithfully in all sorts of colors....nothing special either, like the mixed bag kinda stuffs. We use them for cutting.
Is hardiness all over the board with gladiolas? I had always known they were tender, but assumed since ours grew that all were okay here....
Any input is okay, I mean I'm fine with digging stuff up, I just thought I didn't have to.