Fremont Cottonwood
Populus fremontii
Salicaceae · broadleaf deciduous tree · introduced
Last updated
Plant Profile
Size & Form
Height
40–60 ft
Spread
30-50 ft
Growth Rate
Fast
Site Requirements
Light
Full Sun
Soil Drainage
Moist
Soil pH
adaptable (acidic to alkaline)
Water
Moderate
Drought Tolerance
Low
Hardiness
Zones 5a–8b
Ornamental Interest
Bloom Time
march to april
Fall Color
Yellow
Origin
from western Texas west through New Mexico, Arizona
Watch for this season
Cytospora CankerHigh
Peak Spore Production and Dispersal
Powdery MildewHigh
Active Conidial Spread
AphidHigh
Peak Population & Dispersal
Fall webwormHigh
Larval Feeding & Web Building
+ 7 more — see full disease and pest lists below
Diseases: Regionally Documented (17)
Marssonina Leaf Spot Uredinales (rust fungi) Leaf Rust Taphrina spp. Leaf Blister [VERIFY] Leaf and Shoot Blight Symptom category — not a single disease Canker Pseudomonas syringae pv. syringae Bacterial Blight Armillaria spp. — primarily A Armillaria Root Rot Daldinia concentrica Aspen Trunk Rot Ceratocystis fimbriata (black canker); Cytospora notastro... Black Canker (Target Canker) Cryptosphaeria punctata Cryptosphaeria Canker (Snake Canker) Cytospora spp. (Valsa spp., Leucostoma spp.) Cytospora Canker [VERIFY] Ink Spot Sooty-bark Canker Rhizobium radiobacter (formerly Agrobacterium tumefaciens) Crown Gall Multiple obligate biotrophic fungi (Erysiphales: Erysipha... Powdery Mildew Septoria Leaf Spot and Canker Sclerotinia spp. White Mottled Rot
Pests: Regionally Documented (14)
Malacosoma spp. Tent caterpillar Leucoma salicis Satin moth Various (Coleoptera, Lepidoptera) Borer Pemphigus populitransversus Poplar Petiole Gall Aphids Lepidosaphes ulmi Oystershell scale Prionoxystus robiniae Carpenterworm Phyllonorycter apparella Aspen leaf blotch miner Euhexomyza schineri Poplar twiggall fly Aphidoidea Aphid Acanthococcus azaleae Azalea bark scale Hyphantria cunea Fall webworm Edwardsiana rosae Rose leafhopper Various (Gracillariidae, Agromyzidae) Leaf blotchminer Pemphigus bursarius Lettuce root aphid
Data Maturity Structured Multiple sources. Expert review underway.