Table 3.

Mean dieback of terminal branches (cm) after second winter in the field for selected clones of Taxodium at various locations (U.S.) in USDA plant hardiness zones 4b to 10, temperatures at the Iowa location reached −31.7°C. Clone designations: MX = Mexico or southern Texas, EP = Eastern Provenance, TX = Texas Hill Country; -M = T. d. var. mexicanum, -D = T. d. var. distichum.

LocationUSDA plant hardiness zoneEP-D
477-19
EP-D
492-23
TX-D
TX8DD11
TX-D
TX8DD38
MX-M
465-21
MX-M
MX4MD39
Iowa4b1 ± 6.0z0 ± 6.00 ± 6.02 ±6.062 ±7.458 ±10.4
Ohio5b-y51 ± 7.40 ± 10.40 ±10.439 ±10.444 ± 7.4
Kansas6a0 ± 6.00 ± 6.00 ± 6.00 ±6.00 ± 6.00 ± 6.0
Arkansas6b0 ± 6.00 ± 6.00 ± 6.00 ±6.05 ± 6.00 ± 6.0
Texas panhandle6b/7a8 ± 6.07 ± 6.022 ± 6.04 ±6.0-4 ± 6.0
Northeastern Texas7b0 ± 6.00 ± 6.00 ± 6.00 ±7.40 ± 6.00 ± 6.0
Western Texas8a3 ± 10.4-1 ± 6.02 ±7.42 ± 7.43 ± 6.0
Central Texas8b0 ± 10.40 ± 7.40 ± 6.00 ±6.00 ± 6.00 ± 6.0
Florida panhandle8b------
Central Florida10a/10b0 ± 6.00 ± 6.00 ±6.00 ±6.00 ± 6.00 ± 6.0
  • zValues indicate means ± standard errors.

  • yInsufficient numbers of plants were available to send all clones to all test sites; as such, a hyphen (−) indicates the clone was not tested at a particular site, except for the Ohio location where large numbers of plants and several complete sets of individual clones were lost in the first year due to rabbit damage, thus for the Ohio data the hyphen may also indicate that no plants survived the rabbit damage. Dieback measures were not reported for the Florida panhandle site.