Olneya tesota

Olneya tesota

Ironwood

Large, slow-growing, drought resistant tree, reaching heights of 30 ft. Found in washes and rocky slopes at 2,500 ft. elevation and below, and is evergreen except in severely cold winters. As its name implies it has extremely hard, heavy wood, and was utilized extensively by Native Americans for fuel wood, arrowheads, and tool handles. Attractive pink to purple flowers bloom from May to June. Its seeds are valued by wildlife, and the leaves are browsed by Desert Bighorn Sheep.

Varieties: 

Species Attributes

Height: 
30 
feet
Native or Introduced: 
Native
Precipitation: 
in.
Sun & Shade Tolerance: 
Full Sun
Elevation: 
2,500 
ft.

Soil Texture

Coarse: 
Best
Moderately Coarse: 
Best
Medium: 
Average
Moderately Fine: 
Marginal
Fine: 
Marginal

Soil pH

Acidic: 
Not Adapted
Neutral: 
Best
Basic: 
Average
Seeding Rate: 
PLS lbs/Acre
Pure Seed per Bushel: 
41.00 lbs.
Seeds per Pound: 
2,440
Germination Time: 
Days
Mycorrhizal Dependent: 
Yes
Bloom Color: 
Pink-Purple
Blooming Season: 
Spring
Summer