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Lilium humboldtii
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Humboldt's Lily
( Lilium humboldtii )
Lilium humboldtii
More Photos at CalPhotos
More Info at Jepson eFlora
Calflora
Click on blue squares to see occurrence records.
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Estimated Plant Range (
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)
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13 Nurseries Carry This Plant
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About Humboldt's Lily (Lilium humboldtii)
13 Nurseries Carry This Plant
Add to My Plant List
Humboldt's Lily is a species of lily endemic to California named after naturalist and explorer Alexander von Humboldt. It is native to the South High Cascade Range, High Sierra Nevada, south Outer South Coast Ranges, and Southwestern California, growing at elevations from 600 meters (2,000 feet) to 1,200 meters (3,900 feet). It grows up to 8 feet tall, with flowers that are large and showy, golden-orange with dark red or maroon splotches and orange to brown stamens. The plant flowers in June, with flowers growing in a pyramidal flower cluster. The flowers are on stout stems, which are sometimes brown-purple. The subrhizomatous bulb is large, with yellowish-white scales, and grows very deep in the soil. The leaves grow in whorls, and are undulate, shiny, and oblance-shaped. It is summer-deciduous, dying back after flowering in mid- to late summer, and it should be allowed to go dry at that time. In winter it will do well with minimal supplemental water unless it is an especially dry winter. There are two recognized subspecies. Ssp. humbodtii is found primarily in the foothills of the Sierras; ssp. ocellatum is found primarily in southern California on the coastal side of the mountains and on the Channel Islands. Both subspecies are considered rare.
Plant Description
Plant Type
Perennial herb
Size
6 - 8 ft tall
1 ft wide
Form
Upright Columnar
Growth Rate
Moderate
Dormancy
Summer Deciduous
Flower Color
Brown, Orange, Purple, Red, Yellow
Flowering Season
Spring, Summer
Wildlife Supported
Butterflies & moths hosted ( 2
likely
* )
SHOW ALL
*
Virginian Tiger Moth
Spilosoma virginica
Spilosoma virginica
*
Reaper Dart
Euxoa messoria
Euxoa messoria
Landscaping Information
Sun
Part Shade, Full Sun
Moisture
Low, Moderate - High
Summer Irrigation
Max 2x / month once established
Nurseries
Carried by 13
Ease of Care
Moderately Easy
Soil Drainage
Medium, Slow
Soil Description
Tolerates clay but prefers a well drained loam. Soil PH: 5.0 - 7.0
Common uses
Hummingbird Gardens, Butterfly Gardens
Companion Plants
Southern
Maidenhair Fern
(
Adiantum capillus-veneris
), Manzanita (
Arctostaphylos species
),
Spice Bush
(
Calycanthus occidentalis
),
Tree Anemone
(
Carpenteria californica
),
Ceanothus species
,
Western Redbud
(
Cercis occidentalis
), Dogwood (
Cornus species
), Silktassel Bush (
Garrya species
), Mallow (
Malacothamnus species
),
Mock Orange
(Philidelphus lewisii), Oaks (
Quercus species
),
Gooseberry
(
Ribes species
),
Fern
s
Maintenance
Can be cut back to the ground in late summer after it has gone completely dormant
Propagation
?
For propagating by seed: Sow outdoors in summer for germination the following spring, or 3-6 mos. warm then 2-3 mos. cold stratification. Seeds may also give good germination by spring if sown outdoors in early fall. For forcing slightly green or fresh seeds: 6-8 wks. warm (70°F) stratification or until the majority of seeds have formed bulblets; then 4-6 wks. cold (about 35°FJ stratification; sow, and at 55 to 60°F leaves should be produced in 4-6 wks. (De Graaff 1951).
Natural Setting
Site Type
Moist canyons, protected places on slopes or flats, often alongside streams
Climate
Annual Precipitation: 10.5" - 83.8", Summer Precipitation: 0.15" - 2.84", Coldest Month: 26.3" - 55.2", Hottest Month: 54.1" - 81.0", Humidity: 0.43" - 31.99", Elevation: -62" - 7664"
Alternative Names
Common Names
: Humboldt Lily
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Humboldt's Lily
Lilium humboldtii
Sources include:
Wikipedia
. All text shown in the "About" section of these pages is available under the
Creative Commons Attribution-ShareAlike License
. Plant observation data provided by the participants of the
California Consortia of Herbaria
, Sunset information provided by
Jepson Flora Project
. Propogation from seed information provided by the
Santa Barbara Botanical Garden
from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include
CalPhotos
,
Wikimedia Commons
, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include
Calflora
,
CNPS Manual of Vegetation Online
,
Jepson Flora Project
,
Las Pilitas
,
Theodore Payne
,
Tree of Life
,
The Xerces Society
, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from
PRISM Climate Group, Oregon State University
, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.
Links:
Jepson eFlora Taxon Page
CalPhotos
Wikipedia
Calflora
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