Skip to Content.
Sympa Menu

nafex - [nafex] Niwot Black Raspberry hardiness and disease resistance

Subject: North American Fruit Explorers mailing list at ibiblio

List archive

Chronological Thread  
  • From: Pete Tallman <>
  • To: nafex <>
  • Subject: [nafex] Niwot Black Raspberry hardiness and disease resistance
  • Date: Sun, 11 Sep 2016 08:50:27 +0000

In response to a few question on hardiness and disease resistance.

Niwot hardiness is rated as zone 5, and there are some reports (including
mine and local growers) that Niwot is slightly more hardy than Jewel black
raspberry. The problem with going to zone 4 or lower is that the primocane
crop could have trouble ripening in the shorter season. Jim Fruth reported
hardiness to zone 3, but if you are there, you should consider his Pequot
instead. Berries ripening in the cooler fall weather won't have so much
sweetness. As an experiment, you might want to try eliminating the floricanes
to move the primocane crop earlier. For Canadian growers, In spring 2016,
Niwot was offered by Strawberry Tyme Farm and Wiffletree Farm and Nursery,
both in Ontario. Check with them for 2017.

There has been scant information on the Niwot disease resistance. There were
a few anecdotal reports as being better than Jewel, but nothing I want to
claim about this.

Pete Tallman
Louisville, CO zone 5 or so

  • [nafex] Niwot Black Raspberry hardiness and disease resistance, Pete Tallman, 09/11/2016

Archive powered by MHonArc 2.6.24.

Top of Page