Family: Iridaceae (eye-rid-AY-see-ay) (Info)
Genus: Iris (EYE-ris) (Info)
Cultivar: Mac's Blue Heaven
Hybridized by MacMillan; Year of Registration or Introduction: 1970
 One member has or wants this plant for trade.
Class:
Louisiana (LA)
Height:
24-36 in. (60-90 cm)
Spacing:
12-15 in. (30-38 cm)
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)
Hardiness:
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:
Full Sun
Sun to Partial Shade
Danger:
Parts of plant are poisonous if ingested
Bloom Color:
Dark Blue
Blue-Violet
Purple
Bloom Time:
Midseason (M)
Foliage:
Herbaceous
Smooth-Textured
Other details:
Requires consistently moist soil; do not let dry out between waterings
Very high moisture needs; suitable for bogs and water gardens
Flowers are good for cutting
Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)
Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
Awards (if applicable):
Unknown - Tell us
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