Hi everybody, :-)

So I have been seeing the term Old Growth Roses being mentioned alot. Does
this mean roses that are "classics?" Roses that have been grown from the
1900's, stuff like that?
Can I buy them online? Are they similar to the HT roses that I have? Any
tips on buying them, etc etc.
Will they grow well in my Zones 9-10, Southern, CA?

Thanks, :-)
Emil
Zones 9-10