North American Fruit Explorers mailing list at ibiblio

[Don Yellman <don.yellman@webformation.com>]

Bob:

Go to www.fruitsandberries.com for the only claimed distributor of the Doyle 
blackberry, located in Washington, Indiana.  Punching "Doyle blackberry" into 
your Google window will also turn this up, as well as garden watchdog and several other 
sites on this berry.

The Doyle has an interesting history.  For many years, the only licensed propagator was 
the Severtson family in Texas, which rights were assigned by the discoverer, Thomas 
Doyle of Indiana.  At that time, tissue culture was used for propagation, and small, 
leafed-out plants were air shipped after spring temperatures had warmed up.  This is 
how I got my plants, and shipping was expensive.  Then, in the late 1990's, the patent 
expired, the Doyle family recovered the rights, and addressed the problem of patent 
expiration by registering the name "Doyle" as a trademark.  Trademarks never 
expire, so if anyone else wanted to propagate and sell this berry, they would have to 
call it something else.  I think they are now selling them as rooted, dormant plants, 
which facilitates shipping and makes it possible to ship earlier to colder areas.

For Pat Meadows:  You are right I never figured you for 26 below zero, and 
it's the altitude that does it.  If these temperatures occur with much 
frequency, I doubt either Doyle or Triple Crown floricanes would survive 
without protection.  I knew you were seeking this info for someone else, but 
since you didn't tell us where this someone else lives, I addressed the 
hardiness issue based on the info I had available.  With any luck, that 
someone may be in a warmer location.

Don Yellman, Great Falls, VA