Autumn Willow

Salix serissima

Native to:
Canada, Labrador, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Salicaceae
Genus:
Salix
Species:
Salix serissima
USDA Symbol:
SASE2

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub , Tree
Height:
400 cm
Light Requirements:
Full Sun
Drought Tolerance:
Low
Bloom Months:
may,jun,jul
Bloom Colors:
yellow, green
Landscaping Shrub:
Yes

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Butterflies & Moths:
★☆☆☆☆ Documented Lepidoptera association (GBIF)
Caterpillars:
★★☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Keystone Species Ranking

Caterpillar Keystone:
★★★★★ Butterfly & moth species supported by this genus (NWF)
Pollen Specialist Bee Keystone:
★★★★★ Native pollen specialist bee species supported by this genus (NWF)

Host Plant for Caterpillars

Cecropia moth (Hyalophora cecropia), Fall webworm (Hyphantria cunea), Furcula scolopendrina, Gelechia caudatae, Herald (Scoliopteryx libatrix), Io moth (Automeris io), Nevada buck moth (Hemileuca nevadensis), Portland Phosphila (Pheosia portlandia), Red-humped caterpillar moth (Schizura concinna), Western furcula moth (Furcula occidentalis), White Satin Moth (Leucoma salicis), Lorquin's admiral (Basilarchia lorquini), Mourning Cloak (Nymphalis antiopa), Western Tiger Swallowtail (Papilio rutulus)

Garden & Ecology Notes

Wildlife Value:
birds, bees, butterflies, small mammals
Fall Color:
yellow
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts vigorously from the root crown following fire or cutting.

Soil Requirements

Soil Type:
rich, moist, organic soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
Commonly found in wetlands and bogs

Propagation & Germination

Stratification:
None required
Germination Time:
7–28 days
Notes:
Willow seeds are short-lived and must be sown fresh on moist soil; they require light for germination.

The above propagation data sourced from Claude AI