Lijepi grm/stabalce, i čest u našim primorskim vrtovima. Na D.G. naveden za zonu 8a:
http://davesgarden.com/guides/pf/go/2120/Prema pisanju članova uspješno preživljava i u Kansasu, z. 6b (naravno opet se radi o sušnoj klimi srednjeg zapada SAD-a, relativno kratkotrajnim prodorima hladnoće, itd., ali biljka je očito prilično otporna i vrijedilo bi je pokušati na nekim mjestima kontinenta). Također piše da se u toplijim krajevima (valjda u onim u kojima sjeme uspije dozrit) lako razmnožava i širi putem sjemena:
On May 6, 2009, kman_blue from (Zone 6b) wrote:
This exotic invader is a native of Argentina, but has become naturalized in the Desert SW of the US now. It's NOT native to the USA and naturalizing doesn't change this fact.
As far as my experiences go, I bought one of these from a nursery in Albuquerque, NM years ago(more than 15 years ago).
Some don't like it because it spreads somewhat aggressively by seed in the SW US(hence how it became naturalized), but up here in Eastern Kansas it doesn't produce nearly as many seedlings because of the colder winter temperatures here I suspect. It's suffered from some winter die-back from time to time, but nothing serious in the years I've had it. It's been through temps as low as about -10ºF and still flowered the next year. Similar to the notes from some in Oklahoma, it's not as big here in Kansas as it gets out in warmer parts of the SW US, but it's still a nice 4' or so tall here.
I'd say from my experience, if planted in a well drained soil in a hot and dry area this plant is hardy to zone 6.