Also known as Pampas Grass · 112 gardener saves

Cortaderia: the varieties gardeners actually grow

Cortaderia, the genus most gardeners know as pampas grass. We track 6 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.

6 varietiesZones 4–10Mostly full sun

The 6 most-saved Cortaderia varieties

Of 6 in the catalog — ordered by how many gardeners actually grow them.

How to grow Cortaderia

What the Cortaderia varieties in our catalog actually agree on — drawn from the care records of the 6 most-grown of them, not from a generic template.

The Cortaderia year

  • DivideMarch100% of varieties

    Divide large, congested clumps every 5-10 years in early spring

  • PruneJanuary and February83% of varieties

    Cut back old foliage and plumes hard (to 6-12 inches) before new growth begins.

  • PlantMarch, April, September and October67% of varieties

    Plant in spring or early fall in a sunny, well-drained location

  • Winter PrepOctober and November50% of varieties

    Tie foliage together to protect the crown and contain sharp leaves during winter

Do

  • Water during dry spells 🌱
  • Water deeply during dry periods 🌱
  • Cut back dead foliage in late winter
  • Fertilize with a balanced fertilizer in spring
  • Water during prolonged dry periods 🌱

Avoid

  • Overwater to prevent root rot ❌
  • Avoid overwatering in winter ❌
  • Avoid heavy, clay soils without amendments ❌
  • Don’t cut back in late fall to protect winter interest

What goes wrong with Cortaderia

ProblemWhat you'll seeWhat to do
AphidsSticky residue and distorted leavesUse insecticidal soap or neem oil
Spider MitesFine webbing and speckled leavesUse neem oil or insecticidal soap
RustOrange pustules on leavesApply organic fungicide and improve air circulation
Fungal Leaf SpotBrown or black spots on leavesApply copper-based fungicide

Making more Cortaderia

Division

  1. Dig up mature clump in early spring
  2. Separate into smaller sections with roots intact
  3. Plant divisions 3 feet apart in prepared soil
  4. Water thoroughly and mulch

Seeds

  1. Scatter seeds on moist soil in early spring
  2. Lightly press seeds into soil surface
  3. Keep soil moist for 6 weeks until germination

Cortaderia questions

How many types of Cortaderia are there?

The Sow catalog tracks 6 distinct Cortaderia varieties. The most popular — ranked by 112 real gardener saves — are shown first above.

What zones does Cortaderia grow in?

Across its varieties, Cortaderia 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 Cortaderia bloom?

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

Which Cortaderia 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 Cortaderia 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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