Southern Blue Flag Iris

Iris virginica var. shrevei

$39⁷¹ $49⁹⁹

In Stock
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Plant Size

#1 Container

Product variants

Plant Sentry™

Delivery and Shipping

Understanding Plant Options

Nature Hills offers plants in two main formats:

Container Plants: Grown in pots with soil, sized by container volume and plant age
Bare Root Plants: Dormant plants without soil, sized by height measurements

Container Plant Sizes

Container sizes indicate plant age and growing capacity rather than liquid volume equivalents. Our containers follow industry-standard nursery "trade gallon" specifications, which differ from standard liquid gallon measurements.

Young Plants (6 months to 18 months old)

Container Size	Actual Volume	Metric Equivalent
2" x 2" x 3"	0.18 - 0.21 dry quarts	0.20 - 0.23 dry liters
4" Container	0.31 - 0.87 dry quarts	0.35 - 0.96 dry liters
4.5" Container	0.65 dry quarts	0.72 dry liters
6" Container	1.4 dry quarts	1.59 dry liters
1 Quart	1 dry quart	1.1 dry liters
5.5" Container	1.89 dry quarts	2.08 dry liters

Established Plants (18 months to 2.5 years old)

Container Size	Actual Volume	Metric Equivalent
2 Quart	2 dry quarts	2.2 dry liters
#1 Container	2.26 - 3.73 dry quarts	2.49 - 4.11 dry liters
5" x 5" x 12"	3.5 - 4.3 dry quarts	3.85 - 4.74 dry liters

Mature Plants (2-4 years old)

Container Size	Actual Volume	Metric Equivalent
#2 Container	1.19 - 1.76 dry gallons	5.24 - 7.75 dry liters
#3 Container	2.15 - 2.76 dry gallons	8.14 - 12.16 dry liters

Large Plants (3-5 years old)

Container Size	Actual Volume	Metric Equivalent
#5 Container	2.92 - 4.62 dry gallons	12.86 - 20.35 dry liters
#6 Container	5.25 - 6.01 dry gallons	23.12 - 26.42 dry liters
#7 Container	5.98 - 6.53 dry gallons	26.34 - 28.76 dry liters

Bare Root Plants

Bare root plants are sold by height from the root system to the top of the plant. Plants may exceed minimum height requirements.

Common Sizes:

Trees: 1 foot, 2 feet, 3 feet, 4 feet, 5 feet, 6 feet
Shrubs & Perennials: 1 foot, 18 inches, 2 feet

Important Notes

Container Volume Specifications

Trade Gallon Standard: Our containers follow industry-standard "trade gallon" specifications established by the American National Standards Institute (ANSI Z60.1) for nursery stock
Volume Variations: Actual soil volume may vary due to plant root systems and growing medium settlement
Age Indicators: Container size primarily indicates plant age and maturity rather than liquid volume equivalents

Growing Conditions

Plant size can vary based on variety and growing conditions
Container size helps indicate plant maturity and establishment level
Larger containers generally mean more established root systems and faster landscape establishment

Seasonal Availability

Bare root plants are available seasonally when dormant
Container plants are available throughout the growing season
Specific varieties may have limited availability in certain sizes

Questions?

For questions about specific plant sizes or availability, please contact our plant experts who can help you choose the right size for your landscape needs.

Plant Highlights

Southern Blue Flag Iris highlights at a glance!

Brand

Nature Hills' Choice
Botanical Name

Iris virginica var. shrevei
Growing Zones

5, 6, 7, 8, 9
Mature Height

1 - 2 feet
Mature Spread

18 - 24 inches
Sun Exposure

Full Sun
Moisture

Moderate to High
Soil

Well-Drained
Growth Rate

Medium
Pollinator Friendly

Yes
Pruning Time

After Flowering
Bloom Period

Summer
Native

Yes
Fragrant

Yes

Growing Zones 5-9

Find Your Growing Zone!

Not your typical Iris, the unique native flowering perennial, Copper Iris (Iris fulva) features showy coppery red to orange petals! Not only is the color unique, but the open drooping petals and spreading sepals really set this Iris apart from the rest! Each petal has a dab of gold, and the hue of these flowers can vary slightly because of their native diversity, but we guarantee each will be stunning!

Your bouquets and visiting pollinators will adore them nonetheless! These amazing blooms stand tall atop slender stems and rise over the clumps of sword-like green leaves. Waving like coppery wands for all to see, 2-3 feet in height and spreading 1-2 feet wide.

Like landing pads for beneficial insects and butterflies, even an odd Hummingbird may arrive to sip the nectar, these slightly fragrant flowers are short lived, but there are multiple buds per stem. Profusely flowering for about 3 - 4 weeks throughout April to June. Native Copper Iris are hardy and adaptable native herbaceous flowering perennials that can be found throughout USDA growing zones 5 to 9.

Planting and Application:

Southern Blue Flag Iris are fantastic in any garden location that is sunny and moist to high moisture throughout the year. Plant Native Iris in Rain Gardens and those soggy locations around your yard, like where the gutters drain or the edges of a water feature or pond! Plant in pollinator borders, by the HVAC unit drain, or in the moist mixed perennial and Cottage Garden where all can benefit from the nectar and pollen resource

Water-loving Irises can be planted on banks to prevent erosion, or en masse throughout the sun garden because they are naturally clump-forming and create tidy drifts on their own. The clumps will grow together and block weeds, spreading by rhizomes, so if planted this year, it will be even bigger and better in a season or two! They make magnificent cut flowers and will fill bouquets with vivid blooms!

Royal Purplish-Blue Blooms With White & Yellow Accents
Upright Spreading Clumps of Green Sword-Like Foliage
Slight Fragrance & Vital Pollinator Resource
Native Wetland Wildflower
Water Features & Ponds, Erosion Control & En Masse Color

#ProPlantTips for Care:

Iris are very easy to grow and easy to plant too! Plant in a full sun location in the cooler regions of their favored growing zones and in planting sites that are high moisture. In warmer areas and drier sites, choose a slightly partially shaded or afternoon shade location.

Any well-drained rich soil works great and Iris appreciates a 3-4 inch thick layer of arborist mulch to keep moisture in better and enrich the soil. Iris rhizomes tend to be close to the surface, so mulch helps protect their crowns from freezes. Deadhead flowers as soon as they fade, and cut back the leaves to the ground after frost kills the tops back in the autumn.

Full Sun to Dappled/Partial/Afternoon Shade
High to Average Moisture Needs - Native Wetland Plant
Any Well-Drained Enriched Soil
Deadhead After Bloom & Prune Back After Frost
Deer Don't Favor This Perennial!

Order a hardy native wildflower for your soggier locations around the landscape! The Southern Blue Flag Iris helps you bring pollinators and lovely blue hues. Order now from Nature Hills Nursery!