Canada's Plant Hardiness Site

Asclepias verticillata L.

whorled milkweed

Synonymy

Data Details

Number unique observations: 3510
Zone range (Canada): 3b - 7b

p 1971-2000

Map Legend
Download Grid Data
Hardiness Zones
Canadian Plant Hardiness Zones
Zone%
0a0
0b0
1a0
1b0
2a0
2b0
3a0
3b1
4a1
4b1
5a1
5b1
6a1
6b1
7a1
7b1
8a0
8b0
9a0
Outside Canada96
USDA Zones
Zone%
10
20
31
411
516
624
718
820
97
101
110
120
130
Bioclimatic profile
namemeanS.D.1%5%10%25%50%75%90%95%99%maximumminimum
Annual Mean Temperature 11.464.23.716.046.78.110.714.117.919.421.023.32.2
Max Temperature of Warmest Period 30.922.4226.227.728.228.830.832.734.435.336.0937.724.5
Min Temperature of Coldest Period -8.996.62-22.5-18.7-17.1-14.1-9.3-4.60.213.06.811.8-24.4
Annual Precipitation 969.95260.34370.0524.0649.9826.0933.01153.01335.11436.01572.641738.0238.0
Precipitation of Warmest Quarter 293.857.02155.0190.0221.0268.0300.0321.0338.0354.0504.0524.085.0
Precipitation of Coldest Quarter 168.95107.6629.040.050.080.0146.0243.0333.0393.55429.0489.021.0