Index / Search / Philadelphus lewisii

§1 Plant

Philadelphus lewisii Pursh

vernacular Lewis' mock orange — species · Hydrangeaceae


USDA
PHLE4
GBIF
2986027
Rank
species
Lewis' mock orange (Philadelphus lewisii)
Platephotograph · monte007 source · iNaturalist ↗

§2Habit & range

Habit and range

Growth habit
Shrub
Duration
Perennial
Group
Dicot
Family
Hydrangeaceae Dumort.
Genus
Philadelphus
§2a

Native status, by region

  • CAN Canada Native
  • L48 Lower 48 States Native
§2b

County-level range

· 93 counties across 3 states/territories
Legend Native · 93 Introduced · 0 Both · 0 Hover a county for detail.

§3Cultivation specs · USDA

Recorded by the USDA Plant Materials Program.

§3a

Tolerances

Drought
Medium
Shade
High
Moisture use
Low
Fire
Low
Salinity
None
Anaerobic
Low
CaCO₃
Medium
Hedging
High
§3b

Climate & soil

Cold tolerance
7 °F minimum
Frost-free days
140 min.
Precipitation
19–69 in/yr
pH range
7–8
Root depth
6 in min.
Fertility need
Low
Soil texture
coarse, medium
§3c

Form & growth

Growth form
Multiple Stem
Growth rate
Moderate
Lifespan
Moderate
Mature height
12 ft
Height @ 20 y
6 ft
Foliage texture
Fine
Foliage colour
Green
Porosity (summer)
Porous
Porosity (winter)
Porous
Flower colour
White
Fruit colour
Brown
Fire resistant
No
N fixation
None
Toxicity
None
§3d

Reproduction

Bloom period
Late Spring
Seed abundance
Medium
Seed begins
Summer
Seed ends
Fall
Spread rate
Moderate
Stratify
Yes
Seeds / lb
8,000,000
Propagation
seed, cuttings, bare root, container
§3e

Use & availability

Commercial availability
Contracting Only
Nursery stock
Yes
Browse palatability
High
Graze palatability
High
Palatable, human
No
Protein potential
Low
Lumber
No
Christmas tree
No

§4Counties, by state

Recorded in 93 counties across 3 states/territories.

Idaho view state ↗ 22 N
Oregon view state ↗ 35 N
Washington view state ↗ 36 N

§5Sources & provenance

USDA PLANTS

Symbol, taxonomy, distribution, cultivation specs, native status. Public domain.

plants.usda.gov/PHLE4 ↗

GBIF Backbone

Canonical taxonomic identity, synonym resolution, cross-refs. CC0.

gbif.org/species/2986027 ↗

Record version

Cached and built locally. Source version on this record:

usda-plants-mt-2026-05-26

fetched 2026-05-26T14:42:51Z