Turk's-Cap Lily

Lilium superbum

Native to:
United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Liliaceae
Genus:
Lilium
Species:
Lilium superbum
USDA Symbol:
LISU

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Geophyte
Height:
250 cm
Light Requirements:
Full Sun
Drought Tolerance:
Low
Bloom Months:
jul,aug,sep
Bloom Colors:
orange, red, yellow

Wildlife Benefits

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

Host Plant for Caterpillars

Burdock Borer (Papaipema cataphracta), stalk borer moth (Papaipema nebris), yellow borer moth (Papaipema cerina)

Garden & Ecology Notes

Wildlife Value:
hummingbirds, butterflies, swallowtails

Soil Requirements

Soil Type:
rich, well-drained loamy soil
pH:
5.5 - 6.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
consistently moist
Notes:
prefers wet meadows and stream banks

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–90 days
Germination Time:
14–42 days
Notes:
Seeds exhibit hypogeal germination; a warm period followed by cold stratification may improve emergence. Bulb scales can also be propagated vegetatively.

The above propagation data sourced from Claude AI

Pre-treatment: Cold-moist stratification for 30 days at 1–5°C (34–41°F).; then Cold-moist stratification for 60 days.

Notes: Seeds may require light for optimal germination.

Source: Claude AI

ORGHPS Germination Guide: Sow @ 20°C. If seed does not germinate within 3 months, try 4°C for 1-2 months, then 20°C again. * 4 months warm, then 4 months cold

Source: Ontario Rock Garden & Hardy Plant Society