Bigtooth Aspen
Populus grandidentata
Salicaceae · broadleaf deciduous tree · introduced
Last updated
Plant Profile
Size & Form
Height
50–70 ft
Growth Rate
Fast
Size at 20 yr
40 ft
Lifespan
Short-lived
Site Requirements
Light
Full Sun
Soil Drainage
Wet Tolerant
Soil pH
4.8-7.2
Water
High
Drought Tolerance
Low
Hardiness
Zones 3a–9b
Ornamental Interest
Bloom Time
mid spring
Origin
Nova Scotia to Ontario and Minnesota
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
Phenological Calendar
View full calendar (7 stages)
| Stage | Typical Window |
|---|---|
| Bud break BBCH 07 | Feb 15-Mar 15 |
| Leaf emergence BBCH 11 | Mar 1-Apr 1 |
| Bloom start BBCH 61 | Apr 1-Apr 30 |
| Bloom end / petal fall BBCH 69 | Apr 15-May 15 |
| Fruit/seed development BBCH 71 | Mar 15-May 31 |
| Leaf drop BBCH 93 | Oct 15-Nov 30 |
| Dormancy BBCH 97 | Nov 15-Feb 28 |
Data Maturity Structured Multiple sources. Expert review underway.