Iris savannarum

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Prairie Iris, Savanna Iris


Plant Specifics

Size:3-4 ft tall by 0.5-1 ft wide
Life Span:Long-lived perennial
Flower Color:White,purple,lavender
Fruit Color:Brown
Phenology:Winter dormant. Blooms in spring. Fruits ripen by summer.
Noted for:Showy flowers


Recommended Uses:Moist wildflower garden. Sometimes grown under the drain for an air conditioner. Excellent as a wetland edge flower.
Propagation:Division of roots.
Availability:Native nurseries
Light: Full Sun,  Part Shade
Moisture Tolerance:
always floodedextremely dry
 (Usually moist, occasional inundation ----- to ----- Somewhat moist, no flooding)
Moisture Tolerance: Usually moist, occasional inundation ----- to ----- Somewhat moist, no flooding
Salt Water Flooding Tolerance:Not salt tolerant of inundation by salty or brackish water.
Salt Spray/ Salty Soil Tolerance:Low/no tolerance of salty wind or direct salt spray
Soil or other substrate:Loam, Organic material (muck), Sand
Soil pH:Acidic



Attracts bees esp. bumblebees.

Native Habitats:Marshes, wet prairie, dome swamps, riverine swamps in openings.

Distribution and Planting Zones

Natural Range in Florida
USDA Zones

Suitable to grow in:
8A 8B 9A 9B 

USDA zones are based on minimum winter temperatures


General Comments:This iris and I. hexagona were considered to be a single species until recently.  I. savannarum is the most common iris species in Florida.