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botanical name:
Iris tuberosa
Iris tuberosa © Deeproot Plant Base
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common name:  Snake's Head Iris, Widow Iris, Black Widow
synonyms:  Hermodactylus tuberosus
family:  Iridaceae
characteristics: perennial, scented/aromatic
height: 0.45m
width: 0.15m
growth rate: medium
growth habit: grassy
leaf colour: green
flower colour: yellow
stem/bark: green
main season: Spring
aspect: full sun, part shade
conditions: dry soil, moist soil, sandy soil
preferred soil pH: any
minimum temp: -18°C
USDA zone: 7 to 9
Tuberous plant producing delicately scented flowers of sombre greenish yellow with velvety black falls, in early to mid spring. Grass-like narrow leaves.

Prefers light well drained soils. May be slow to establish.

other notes:
Native to the Eastern Mediterranean area.

pronounced: her-mo-DAK-til-us tew-ber-OH-sus

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