MODESTO ASH
Fraxinus velutina 'Modesto'
FAMILY Oleaceae
SYNONYMS
ADDITIONAL COMMON NAMES
See: all Fraxinus
GENERAL INFO
Resistant to oak root fungus. Smog tolerant. Pest prone and undesirable in many areas. Not affected by powdery mildew or rust.
Native range: Southwestern United States and Mexico
Native range: Southwestern United States and Mexico
TREE CHARACTERISTICS
Tree Shape: RoundedFoliage Type: DeciduousMaximum Tree Height: 50 feetCanopy Width: 30-40 feetGrowth Rate: ~36 in/yearLeaf Arrangement and Leaf Form: Opposite, Pinnately CompoundLeaf Shape: OvalLeaf color: Light GreenFall Color: YesFlowers: InconspicuousFlower Type: Has either male or female reproductive parts (dioecious)Flower Time: SpringFruit: Medium Yellow or Mostly Green SamaraFruiting time: Fall or SummerBark Color: Light Gray, FissuredLitter Type: Dry Fruit
SITE CONDITIONS
Recommended Planting Area: Greater than 7'Water Use Rating: MediumSunset Climate Zone: 9, 12 - 24Shade Tolerance: NoUSDA Hardiness Zone: 6, 7, 8Soil Texture: Loam or Sand or ClaySoil pH: Very Acidic to Very AlkalineSalt Tolerance: Moderate
CONSIDERATIONS
Branch Strength: Medium WeakRoot Damage Potential: HighPotential health issues: AllergyBiogenic Emissions: LowDisease and Pest susceptibility: Anthracnose, Mistletoe, Root Rot, Rust, Armillaria and Beetle Borers, Spider Mites, White Fly, Phsyllid, Invasive Shot Hole BorerDisease Resistance and Pest Resistance: Armillaria, Powdery MildewUtility Friendly: NoWCISA Appraisal: Suggested LCANT 24" box, Group 4, Approx. cross sectional area 4.75 sq. in.
CITE THIS TREE
"SelecTree. UFEI. "Fraxinus velutina 'Modesto' Tree Record." 1995-2025. Cal
Poly State University, San Luis Obispo. Accessed on Mar 18, 2025."
< https://selectree.calpoly.edu/tree-detail/644 >
< https://selectree.calpoly.edu/tree-detail/644 >
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