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| COLD HARDY
PLANTS Growers and Breeders of Unusual Cold Hardy Plants |
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Xysmalobium undulatum |
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| Quantity
of plants tested: 2 plants the 2001-2002 winter Size of plant tested: one plant was 18" and the other was 12" tall. Both started from seed in May 2001. Soil texture: sandy loam and covered with 2" pine bark mulch. When planted: the plants were planted in the ground in August and in September. Winter protection: None. Microclimate: the 18" tall plant was in a warm microclimate (5ft from a south facing wall) and the 12" plant was in a cold microclimate. Temperature: refer to 2001-2002 winters on this chart Findings: both plants were highly burnt after a night down to 15F. No burn was observed after a night down to 21F. |
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October 1, 2001 - This photo shows the 18" tall plant prior to any freezes. |
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November 7, 2001 - This photo shows the same plant several days after a 15F night. No burn was observed after a night down to 21F. |
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May 2002 - It survived!!! Here's the plant emerging in May. |
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September 28, 2002 - Here's some of the flowers. It flowers all summer long. |
| August 8, 2003 - both plants died and never returned after the cold from last winter. | |
