North American Fruit Explorers mailing list at ibiblio

[Don Yellman <dyellman@earthlink.net>]

Keith:

   There is an everbearing strawberry called "Tristar", but I don't know
of a blackberry similarly named.

   Could it be you're referring to the "Triple Crown" blackberry?  I am
growing it here very successfully on the zone 6/7 border in N. Virginia,
but I can't yet say how it would winter in colder regions.  We are going
to try an experiment next spring when I mail some tiprooted specimens to
nafex colleagues in N. Minnesota and coastal Maine, but it will take at
least a full growing year to get a report.  I believe, although I can't
remember why, that Triple Crown came from a Univ. of Illinois breeding
program, and much of Illinois is in z5, so they may be reliably hardy
through that zone and perhaps even higher.  Of course, with these
trailing types, you can lay them on the ground and cover the canes with
leaves and such, so it may be possible to pull them through even where
winters are cold with drying winds.

    I get a little dieback even here on the thinner canes, but it's not
much of a loss since they have to be severely pruned anyway to induce
fruiting laterals in the spring.  Triple Crown is the most vigorous
plant I have ever grown, with the exception of kudzu, and that was by
accident.

Rgds, Don Yellman, Great Falls, VA


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