Dutch iris requirements

Diane Whitehead voltaire@islandnet.com
Fri, 12 Sep 2003 10:05:23 PDT
So far we have had success reported from Australia, Texas and New Mexico.

A couple of nurseries in California say they will naturalize easily 
and multiply rapidly.  One of these is just north of San Francisco in 
grape country.

Other successful places mentioned on the web: Las Vegas, Oklahoma.

All these places seem to me to have high summer heat in common.

Maybe  digging the bulbs up after flowering keeps them warmer than if 
they stayed in the ground where the soil insulates them.

OK.  I'm going to experiment.  I'll get back to you in a couple of years.

Diane Whitehead  Victoria, British Columbia, Canada
maritime zone 8
cool mediterranean climate (dry summer, rainy winter - 68 cm annually)
sandy soil

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