Oxydendrum arboreum
Sourwood, Sorrel-tree

Mature Height: 20-110'     Longevity: 120 years

1-6 Water Range
Soil moisture tolerated by tree

6-8 Temperature Range
Hardiness Zones in which tree naturally occurs.

DEFENSE     Soil Moisture Key
1: Found in sub-xeric sites with chestnut oak. "High" drought tolerance listed. Found on old-dunes in coastal plain.

6: Does not tolerate flooding but is found above streams in mesic areas that are not subject to flooding.

DEFENSE (from Distribution Maps)
National Audubon Society (NAS) Map: (NORTH) Solid Z6. (SOUTH) Solid Z8 w/ small community in Z9 in TX. TX too small to warrant inclusion of Z9 in range.

Peterson Field Guide (PFG) Map: Same as NAS.

2   Sun Strength

7   Shade Strength

DEFENSE
Growth Rate:
Succession:
Soil Range:
Salt Tol.:
Allelopath:
Avg Height:
Max Height:

Click here for Key
2.5 = Slow
-.4 = Climax Specialist
+.1 = 2 Major & 1 Minor
+.2 = Moderate
0 = No
-.2 = 40'
0 = 110'

DEFENSE
Shade Tol.:
Succession:
Soil Range:
Salt Tol.:
Allelopath:
Avg Height:
Longevity:

Click here for Key
6.5 = slightly < tolerant
+.7 = Climax Specialist
+.1 = 2 Major & 1 Minor
+.2 = Moderate
0 = No
-.2 = 40'
-3 = 120 years

TOTAL SCORE (2.2): Not a fast growing tree that does not pioneer effectively on good sites. Typically small.

TOTAL SCORE (7.0): Wide range of shade tolerances listed; however, tree much more common in shady conditions. Short longevity & size prevent higher score.

1   Fire Strength

5   Wind Strength

DEFENSE
Base Score: Small Tree = 1
Fire Effects (FEIS) database indicates even low severity fires can kill tree.
Final Value = 1

DEFENSE
Base Score: ???
Small tree identified with hard wood & resistant to breakage.
Final Value = 5