Canada's Plant Hardiness Site

Hypericum perforatum L.

Klamathweed, common St. Johnswort

Synonymy

Data Details

Number unique observations: 7780
Zone range (Canada): 2a - 9a

p 1971-2000

Map Legend
Download Grid Data
Hardiness Zones
Canadian Plant Hardiness Zones
Zone%
0a0
0b0
1a0
1b0
2a1
2b1
3a4
3b5
4a4
4b3
5a2
5b2
6a1
6b1
7a1
7b1
8a1
8b1
9a1
Outside Canada73
USDA Zones
Zone%
10
20
310
415
519
627
716
87
91
101
110
120
130
Bioclimatic profile
namemeanS.D.1%5%10%25%50%75%90%95%99%maximumminimum
Annual Mean Temperature 7.993.191.63.34.25.77.510.112.513.816.217.7-0.5
Max Temperature of Warmest Period 27.32.9120.923.023.925.327.028.931.332.535.436.518.0
Min Temperature of Coldest Period -10.46.03-23.2-19.6-18.0-14.8-10.5-6.7-1.10.62.65.7-28.5
Annual Precipitation 1019.4274.59359.95557.0718.9848.01007.01176.01329.01485.01843.212093.0175.0
Precipitation of Warmest Quarter 238.9595.3711.040.075.0201.0271.0308.0331.0342.0367.0482.06.0
Precipitation of Coldest Quarter 265.19160.0849.080.0104.0165.0230.0298.0502.0639.05806.0876.024.0