Spanish Broom

Spartium junceum

Native to:
Albania, Azores, Baleares, Corse, East Aegean Is., France, Greece, Italy, Kriti, Lebanon-Syria, NW. Balkan Pen., Palestine, Portugal, Sardegna, Sicilia, Spain, Türkiye, Türkiye-in-Europe

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Fabaceae
Genus:
Spartium
Species:
Spartium junceum
USDA Symbol:
SPJU2

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub
Height:
300 cm
Light Requirements:
Full Sun
Drought Tolerance:
High
Bloom Months:
apr,may,jun,jul
Bloom Colors:
yellow
Landscaping Shrub:
Yes

Wildlife Benefits

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

Host Plant for Caterpillars

Genista Broom Moth (Uresiphita reversalis)

Reported Fauna Sightings

Moths:Genista Broom Moth (Uresiphita reversalis)

Garden & Ecology Notes

Wildlife Value:
bees, butterflies
Deer Resistant:
Yes
Salt Tolerant:
Yes
Fragrant:
Yes
Fire Ecology:
Fire adapted — tolerates or benefits from fire
Fire Notes:
Resprouts vigorously from root crown after fire. Seeds have hard coats that may be stimulated by heat.

Soil Requirements

Soil Type:
poor, sandy, well-drained soil
pH:
6.0 - 8.0 (neutral to slightly alkaline)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
thrives in rocky, calcareous soils

Propagation & Germination

Stratification:
None required
Scarification:
Seed coat scarification required before sowing
Germination Time:
14–30 days
Notes:
Scarification with hot water or mechanical abrasion improves germination. Seeds can remain viable in soil for decades.

The above propagation data sourced from Claude AI

ORGHPS Germination Guide: Sow @ 20C. Germinates within 3 months.

Source: Ontario Rock Garden & Hardy Plant Society