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Blue Flag Iris

Package of
Quantity
ShipsShips 10-12 Days
Height at MaturityUnder 12"
ExposureFull Sun
Planting Zones3-9
UsageFlowering, Shade Gardens
Shipped AsNovember 2025
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Description

Iris‌ versicolor - Blue Flag Iris

It is a herbaceous‚ perennial plant found in North America‚ growing to 2 to 3 feet (0․61‌ to 0․91 m) in height․ The long‚ green leaves of Blue Flag Iris are sword-like‌ and can be as much as 3 feet (0․91 m) long and 1 inch (2․5 cm) wide‚ with a mid-rib in the center of each leaf․

Blue Flag Iris's Bloom

Blue Flag Iris's Requirements

Flowers of Blue Flag Iris

Blue Flag Iris blooms from late spring through early summer; a colony of plants can bloom for a month‚ although individual flowers only last a few days․

The flowers are sweetly scented and cross-pollinated by bumblebees and long-horned bees‚ though butterflies and skippers may also visit the blossom and are much less efficient cross-pollinators․

Blue Flag Iris's Growth

This is a clump-forming perennial plant with a height of between 2 and 4 feet․ The sword-shaped leaves are erect‚ stalkless, and may be green or bluish green‚ and up to 3 feet long․ The flowers are up to 3½ inches in diameter‚ and the petaloid sepals spread from a central point․ They appear violet and have large white and yellow blotches with purple veins․ The shorter‚ oblong branches have upturned tips․ The violet upper petals have darker purple veins․ Eventually‚ the flowers are replaced by capsules filled with closely packed rows of seeds that can float on the water and disperse when the capsules dehisce (burst open)․ The plant produces colonies of fleshy rhizomes and coarse fibrous roots․ It will grow in wet to moist conditions‚ needs to be kept moist‚ needs a semi-shaded position and should be planted in a rich organic soil․ Seeds should also be kept dry; store them with a bit of moist sand․ This lovely plant does well in water gardens‚ on the banks of streams‚ ponds‚ or retention basins․ The plant is native to marshes in Florida and is found in standing water‚ but it also does well in average garden soil with regular watering․ It may be planted en masse in front of shrubs‚ or used as a spiny accent plant․ It makes a good year-round garden plant due to its upright‚ coarse textured leaves․ The lavender to purple flower spikes are borne only in the spring and for a short period․

The shorter‚ oblong branches have upturned tips․ The violet upper petals have darker purple veins․ Eventually‚ the flowers are replaced by capsules filled with closely packed rows of seeds that can float on the water and disperse when the capsules dehisce (burst open)․ The plant produces colonies of fleshy rhizomes and coarse fibrous roots․ It will grow in wet to moist conditions‚ needs to be kept moist‚ needs a semi-shaded position and should be planted in a rich organic soil․ Seeds should also be kept dry; store them with a bit of moist sand․ This lovely plant does well in water gardens‚ on the banks of streams‚ ponds‚ or retention basins․ The plant is native to marshes in Florida and is found in standing water‚ but it also does well in average garden soil with regular watering․ It may be planted en masse in front of shrubs‚ or used as a spiny accent plant․ It makes a good year-round garden plant due to its upright‚ coarse textured leaves․ The lavender to purple flower spikes are borne only in the spring and for a short period․

The plant produces colonies of fleshy rhizomes and coarse fibrous roots․ It will grow in wet to moist conditions‚ needs to be kept moist‚ needs a semi-shaded position and should be planted in a rich organic soil․ Seeds should also be kept dry; store them with a bit of moist sand․ This lovely plant does well in water gardens‚ on the banks of streams‚ ponds‚ or retention basins․ The plant is native to marshes in Florida and is found in standing water‚ but it also does well in average garden soil with regular watering․ It may be planted en masse in front of shrubs‚ or used as a spiny accent plant․ It makes a good year-round garden plant due to its upright‚ coarse textured leaves․ The lavender to purple flower spikes are borne only in the spring and for a short period․

This lovely plant does well in water gardens‚ on the banks of streams‚ ponds‚ or retention basins․ The plant is native to marshes in Florida and is found in standing water‚ but it also does well in average garden soil with regular watering․

It may be planted en masse in front of shrubs‚ or used as a spiny accent plant․ It makes a good year-round garden plant due to its upright‚ coarse textured leaves․ The lavender to purple flower spikes are borne only in the spring and for a short period․

Planting & Care

Plant bare-root stock as soon as it arrives, in well-drained soil with full to partial sun unless noted otherwise above. Water deeply once a week during the first growing season to establish a strong root system.

Shipping & Returns

Dug and shipped bare-root during your zone's dormant window, packed to arrive fresh. Every order is backed by our first-season establishment guarantee — we'll replace it for you.