Table 2.

Location, USDA plant hardiness zone designation, winter minimum temperatures, and annual rainfall at the field trial sites (U.S.) testing clones of Taxodium distichum.

Location	USDA plant hardiness zone	Soil pH	Minimum winter temperature (°C)		Annual precipitation (cm)
Location	USDA plant hardiness zone	Soil pH	2009–2010	2010–2011	2009	2010
Iowa	4b^{^z}	5.2^{^y}	−31.7^{^x}	−29.4	94.5	128.5
Ohio	5b	7.1	−17.2	−19.4	76.2	71.6
Kansas	6a	6.3	−17.2	−20.0	104.9	63.8
Arkansas	6b	5.6	−12.2	−11.7	127.0	106.7
Texas panhandle	6b/7a	8.2	−15.0	−16.7	32.8	67.3
Northeastern Texas	7b	7.7	−10.0	−11.1	100.6	74.4
Western Texas	8a	8.4	−6.1	−5.2	16.5	33.0
Central Texas	8b	7.1	−8.0	−7.0	99.1	70.6
Florida panhandle	8b	5.3	−9.4	−6.1	169.9	110.7
Central Florida	10a/10b	5.9	−2.2	0.0	79.8	53.3

↵^zAs indicated in the 1990 USDA Plant Hardiness Zone map.
↵^yMean of three samples per location.
↵^xTemperature and precipitation data either recorded on site, or if unavailable on site was estimated using the nearest official weather station.