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[Aroid-l] Cold hardiness of Typhonium horsfieldii

  • Subject: [Aroid-l] Cold hardiness of Typhonium horsfieldii
  • From: Victor Soukup <soukupvg@email.uc.edu>
  • Date: Thu, 14 Jun 2007 09:55:44 -0400

Every once in a while the subject of cold hardiness comes up in discussions of particular aroids. I want to add one example based on my own experiences. I received several years ago from Chen Yi some tubers of Typhonium horsfieldii, which were potted. Three years ago I placed several outside on a northwest-facing mesic, calcareous, hillside under mixed deciduous and hemlock trees. These plants continue to grow (no blooms this year yet) even though this was a very cold winter with one stretch of 10 degrees below freezing F of three weeks. Cincinnati is considered as Zone 5/6, maybe in protected sites, 7. Typhonium venosum (Sauromatum venosum) regularly goes through our winters, but showed some die back this year. Has anyone else tried other Typhoniums (other than giganteum or diversifolium) outside, and if so, with what results?


Victor G. Soukup PhD
University of Cincinnati
Cincinnati, OH 45221-0006
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