Canada's Plant Hardiness Site

Tiarella trifoliata L.

three-leaf foamflower, lace foamflower, sugar-scoop, western foamflower

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Data Details

Number unique observations: 1813
Zone range (Canada): 1a - 9a

p 1971-2000

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Hardiness Zones

Canadian Plant Hardiness Zones
Zone	%
0a	0
0b	0
1a	1
1b	1
2a	1
2b	2
3a	3
3b	3
4a	4
4b	5
5a	4
5b	4
6a	3
6b	2
7a	1
7b	1
8a	1
8b	1
9a	1
Outside Canada	59

USDA Zones
Zone	%
1	0
2	0
3	3
4	16
5	30
6	30
7	8
8	6
9	2
10	1
11	0
12	0
13	0

Bioclimatic profile

name	mean	S.D.	1%	5%	10%	25%	50%	75%	90%	95%	99%	maximum	minimum
Annual Mean Temperature	6.08	3.39	-1.29	0.5	1.6	3.5	6.1	8.9	10.38	10.9	13.39	14.8	-3.5
Max Temperature of Warmest Period	21.87	3.51	13.5	15.7	17.0	19.5	22.2	24.2	26.3	27.4	29.0	32.4	11.1
Min Temperature of Coldest Period	-5.75	5.72	-17.89	-15.74	-13.88	-10.3	-5.0	-0.4	0.9	1.5	3.4	5.5	-21.6
Annual Precipitation	1525.55	712.56	494.84	604.0	682.4	883.0	1425.0	2080.0	2500.4	2824.4	3242.32	3576.0	290.0
Precipitation of Warmest Quarter	180.55	85.98	17.0	70.6	91.0	124.0	167.0	220.0	280.0	347.4	482.28	508.0	9.0
Precipitation of Coldest Quarter	596.11	319.62	92.12	164.0	202.2	309.0	573.0	838.0	1035.8	1173.0	1309.4	1404.0	65.0