8.8k gardener saves

Iris: the varieties gardeners actually grow

We track 256 varieties; these are the ones gardeners actually save and plant, ranked by real saves rather than catalog marketing. Each links to full care, bloom, and live price data.

256 varietiesZones 4–10Mostly full sun

The 12 most-saved Iris varieties

Of 256 in the catalog — ordered by how many gardeners actually grow them.

Browse all 256 Iris varieties →

How to grow Iris

What the Iris varieties in our catalog actually agree on — drawn from the care records of the 40 most-grown of them, not from a generic template.

The Iris year

  • DivideJuly and August100% of varieties

    Divide crowded clumps every 3-4 years in late summer

  • FertilizeFebruary and March88% of varieties

    Apply low-nitrogen fertilizer in early spring and after main bloom

  • Spring CleanupFebruary88% of varieties

    Clear away old leaves and debris to improve air circulation

  • PlantJuly–September68% of varieties

    Plant rhizomes shallowly in late summer/early fall

  • DeadheadMay and June68% of varieties

    Snap off spent flower stalks at the base after blooming

  • Check for PestsMarch–May55% of varieties

    Watch for iris borer damage on leaves

  • PruneMay, October and November45% of varieties

    Cut spent flower stalks after bloom; cut foliage back to 6 inches in late fall

Do

  • Apply a balanced fertilizer in early spring
  • Water regularly during active growth 🌱
  • Water regularly during dry spells 🌱
  • Remove spent flowers to encourage rebloom
  • Water during dry spells 🌱

Avoid

  • Avoid overwatering, which can cause root rot ❌
  • Refrain from fertilizing late in the season
  • Avoid overwatering to prevent rhizome rot ❌
  • Avoid overwatering in winter ❌

What goes wrong with Iris

ProblemWhat you'll seeWhat to do
AphidsSticky residue on leaves, distorted new growthSpray with insecticidal soap or neem oil
Iris borerFrayed or ragged leaves, holes in foliageRemove and destroy infested foliage; apply organic insecticide if necessary
Iris BorerFrayed or chewed leaves, holes in rhizomesRemove and destroy affected plant parts, apply organic insecticide
Root rotWilting and blackened rhizomesImprove drainage and reduce watering
Rhizome rotSoft, black, or decayed rhizomesEnsure well-drained soil; remove and discard affected rhizomes
Root rotWilting and yellowing leaves, mushy rhizomesImprove soil drainage, reduce watering, treat with fungicide
Leaf spotDark spots on foliageRemove infected leaves; use copper-based fungicide

Making more Iris

Division

  1. Dig up mature clumps in late summer or early fall.
  2. Gently separate rhizomes with a sharp knife.
  3. Allow cut surfaces to dry for 1-2 days.
  4. Plant divisions 2-3 inches deep in prepared soil.
  5. Water thoroughly and mulch to retain moisture.

Seed

  1. Collect seeds after flowering in late summer.
  2. Tuck seeds into moist soil in early spring.
  3. Maintain soil moisture until germination occurs, usually in 4-6 weeks.
  4. Thin seedlings to prevent overcrowding.

Iris questions

How many types of Iris are there?

The Sow catalog tracks 256 distinct Iris varieties. The most popular — ranked by 8.8k real gardener saves — are shown first above.

What zones does Iris grow in?

Across its varieties, Iris covers USDA Zones 4–10. Individual varieties differ — each plant page lists its exact range, and Sow filters the catalog to your zone automatically.

When does Iris bloom?

Most Iris varieties bloom in late spring, late spring to early summer, mid-spring. Staggering early, mid, and late varieties extends the genus's season in one bed.

Which Iris should I choose?

Start from the most-saved varieties above — popularity across thousands of gardens is a strong signal of reliability — then filter by your zone and sun. In the Sow app you can preview any of them in a photo of your actual yard before you buy.

Keep exploring

Design with Iris in your own yard

Snap a photo of your space and see these varieties planted in it — sized correctly, matched to your zone, with care reminders included.

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