Species Lilium, Humboldt's Lily

Lilium humboldtii

Family
Liliaceae (lil-ee-AY-see-ee)
Genus
Lilium (LIL-ee-um)
Species
humboldtii (hum-BOLD-tee-eye)
Synonym
Lilium bloomerianum
Lilium californicum
Lilium puberulum
Lilium robinsonianum
Height
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
Spacing
6-9 in. (15-22 cm)
Hardiness
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
Sun Exposure
Light Shade
Bloom Color
Red-Orange
Gold (yellow-orange)
Bloom Time
Mid Summer
Foliage
Herbaceous
Other Details
Other details
Propagation Methods
By dividing the bulb's scales
From seed; stratify if sowing indoors
Seed Collecting
Soil pH requirements
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information
Non-patented
Division
9 - Species
Flower Shape
Recurved
Flower Habit
(c) Down-facing
Bloom Size
6" to 12" (151 mm to 300 mm)
Color Pattern
Spotted
Foliage Color
Bloom Characteristics
Flowers are fragrant
Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Requires consistently moist soil; do not let dry out between waterings
Where to Grow
Regional

This plant is said to grow outdoors in the following regions:

Colfax, California

Grass Valley, California

Lake Nacimiento, California

Malibu, California

PASO ROBLES, California

Atlanta, Georgia

Butler, Pennsylvania

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Gardener's Notes:

2
positives
0
neutral
0
negative
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F
Colfax, CA | September 2014 | positive

I've found this plant growing in three places near my home in Colfax, CA. The reason that it is so rarely found is that it is adored by ...Read More

W
Lake of the Pines, CA | August 2011 | positive

My friend and I recently discovered that this plant grows near our home town wildly. It may also be found in select parts of Grass Valley...Read More

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