Re: rot and borer resistant iris: a myth?

> resistant? I'm willing to go back completely to pre-1950s varieties if need be.
> If this search is fruitless for a large swath of the U.S., then be prepared for
> AIS membership to drop significantly in the coming years.  Reluctance to use
> garden chemicals in on the rise, more and more of them are being removed from
> the market, and beautiful "new" perennials of all kinds that don't require them
> are flooding into nursery commerce.

Ah, but:  as these "new" perennials become overplanted in monocultures,
as so many other popular plants have been in the past, the disease
and pest problems will mount.  Plants imported from other parts of
the world may at first lack a natural disease or pest enemy, but
give it time.

I still believe that biodiversity is one of the best ways to prevent
disease and pest problems, plus it's a fabulous excuse to collect
all sorts of weird varieties and cultivars :-)
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