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Two light purple Dwarf Crested Irises blooming in woodland
Dwarf Crested Iris (Iris cristata) growing in a line in woodland
Dwarf Crested Iris growing in clumps in woodland
Two light purple Dwarf Crested Irises blooming in woodland
Dwarf Crested Iris (Iris cristata) growing in a line in woodland
Dwarf Crested Iris growing in clumps in woodland
Iris cristata

Dwarf Crested Iris

Plants

50 Plug Tray Out of Stock

Description

Dwarf Crested Iris (Iris cristata), also known as Crested Iris, brings soft blue-purple color to woodland gardens in spring. This low-growing native spreads across the ground with slender, sword-like leaves that form tidy patches of bright green foliage.

In mid-spring, delicate iris flowers rise just above the leaves, often appearing almost stemless due to their short stems. Blooms range from pale blue to lavender—sometimes nearly white—and feature a distinctive yellow and white crest in the center. Bees frequently visit the flowers during their short but showy bloom period.

Dwarf Crested Iris grows best in partial to full shade and prefers rich, well-drained woodland soils, though it can tolerate some sun and drier conditions once established. It spreads by shallow rhizomes to form colonies and can easily be divided every few years. Use it as a native groundcover in woodland gardens and shaded borders, planting about 6 inches apart for a fuller, carpeted look.

Compared to other native irises like Copper Iris (Iris fulva), Northern Blue Flag (Iris versicolor), and Southern Blue Flag (Iris virginica var. shrevei), which prefer wetter soils and grow much taller, Dwarf Crested Iris stays low and is better suited for drier woodland settings and groundcover use.

Seed Details

Weight 15 lbs
Dimensions 22 × 12 × 11 in

Range Map

Dwarf Crested Iris range map

Details

SociabilityRhizomes, Colonies
Sun RequirementsFull Sun, Partial Sun, Shade
Soil MoistureDry, Dry Mesic, Mesic, Wet-Mesic
BenefitsDeer Resistant
Height< 1 Foot Tall
USDA Zones4 - 8
Bloom ColorPurple
Bloom PeriodMay
Plant Spacing8-12"

Seeds & Seed Mixes:

Seeds and seed mixes ship nationwide, year-round, typically within 3–5 business days. If you would like to postpone a seed mix shipment until fall, please note this at checkout.

Live Plants:

Live plants are available year-round while inventory lasts and ship to all states except California, Arizona, Oregon, Washington, Nevada, Alaska, and Hawaii. After your order is placed, we’ll contact you to coordinate a spring shipping window, as many plants are overwintered and ship once dormancy breaks.

Estimated shipping for 2026 plant orders begins in mid-April, weather permitting.

If you’re looking to secure plants in advance or need larger quantities for a project, we offer contract growing options. Contact us to discuss your needs and request a quote. Additional species not listed online may also be available through contract grow.

Live Stakes:

Live stakes are available by request only and must be ordered by submitting a contact form. Ordering is open seasonally from November 1 through February 28. A minimum of 100 stakes per order is required, with at least 25 stakes per species.

Live stakes ship only to the following states: Missouri, Minnesota, South Dakota, North Dakota, Nebraska, Kansas, Oklahoma, Arkansas, Tennessee, Kentucky, Illinois, Indiana, Ohio, Michigan, and Iowa.

PLS stands for Pure Live Seed, an industry-standard measure of seed quality. It reflects the portion of seed in a batch that is viable and capable of germinating.

What this means for you: when you purchase 1 lb. of PLS seed, the physical weight of the seed you receive will be slightly more than 1 lb. That’s because we account for non-viable seed and natural inert material upfront, so you receive a full pound of live, plantable seed.

Many companies sell bulk seed by total weight, which can include filler and non-viable seed. By pricing based on PLS, we make sure you’re getting exactly what you paid for—high-quality native seed with more predictable, successful germination.

Want to dive deeper? Check out our in-depth article on what PLS is and why it matters.