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Karl Foerster Feather Reed Grass Calamagrostis acutiflora

(9 REVIEWS)
Exposure
  • Part Sun to Sun

The optimum amount of sun or shade each plant needs to thrive: Full Sun (6+ hours), Part Sun (4-6 hours), Full Shade (up to 4 hours).

Flower Season
  • Spring
  • Summer
Mature Size
72" 36"
Height
48 - 72"
Spread
24 - 36"

This plant is hardy in zones 5 - 11

Hardy Zones

Zones are based on the lowest average temperature an area is expected to receive during the winter. They are used to determine whether a plant is likely to be perennial in your area. If your zone is equal to or higher than the zone listed for the plant, it will be hardy for you and thrive in your climate.

  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
What is my hardiness zone?
 

My Current Zone

0
  • Details

    Features

    Dramatic red-bronze flower spikes early to midsummer; will beautify your garden year after year

    Award Winner
    Heat Tolerant
    Deadheading Not Necessary
    Attracts: 
    Birds
    Grass: 
    Grass

    Characteristics

    Plant Type: 
    Perennial
    Height Category: 
    Tall
    Garden Height: 
    48 - 72 Inches
    Spacing: 
    24 - 36 Inches
    Spread: 
    24 - 36 Inches
    Flower Colors: 
    Green
    Flower Shade: 
    Green
    Foliage Colors: 
    Yellow
    Foliage Shade: 
    Yellow
    Habit: 
    Upright
    Container Role: 
    Thriller

    Plant Needs

    Light Requirement: 
    Part Sun to Sun
    Maintenance Category: 
    Easy
    Bloom Time: 
    Early Summer
    Bloom Time: 
    Mid Summer
    Bloom Time: 
    Early Winter
    Bloom Time: 
    Late Summer
    Bloom Time: 
    Mid Winter
    Bloom Time: 
    Early Fall
    Bloom Time: 
    Late Winter
    Bloom Time: 
    Mid Fall
    Bloom Time: 
    Late Fall
    Bloom Time: 
    Late Spring
    Hardiness Zones: 
    5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b, 10a, 10b, 11a, 11b
    Water Category: 
    Average
    Uses: 
    Cut Flower
    Uses: 
    Dried Flower
    Uses: 
    Grass
    Uses: 
    Landscape
    Uses Notes: 

    Great for landscapes and as a specimen plant

    Maintenance Notes: 

    Karl Foerster is cool-season grass. Cool-season grasses put on most of their growth in spring before temperatures begin exceeding 75 degrees Fahrenheit and in the fall when temperatures cool down. They generally maintain good color through the summer but won't grow much when it is hot.
    Cut back cool season grasses in very early spring.

    Cool season grasses tend to look good even as the weather cools. Leave their foliage in place until spring and then as soon as the snow is gone cut them back. Leave about 1/3 of the plant in place. Trimming cool season grasses too harshly can irreparably harm the plant.

    Divide cool season grasses in spring or early fall. Cool season grasses are actively growing in spring and fall. These grasses can be transplanted at either time of the year but early spring is probably the best time to divide. If you do divide them in the fall, be careful that the freeze/thaw cycles of winter don't heave the plants out of the ground, this happened to a couple of my coral bells last winter.

    Cut clumps of grass to the ground in late winter before new shoots appear.

    2001 Perennial Plant of the Year

  • 9 Reviews

    • Grows well in Alberta. However, last year had mice and am wondering if this grass is a food source for them. Planted in a rockery to add height

      S R
      Canada
      3 years ago
      Outstanding My favorite plant, I recommend to others all the time and explain the reasons why I like it so much.
    • I highly recommend this plant to anyone who likes ornamental grasses. Very easy to care for. No special care. Grows fast. My greyhounds sure loved eating the green grass it begins with, so we had to move it out of backyard as vet said it could give blockage and harm these dogs. It does get large, so do not plant too close to each other and perhaps in background of colorful plants or flowers.

      Miss Roselady
      Idaho
      United States
      5 years ago
      Outstanding My favorite plant, I recommend to others all the time and explain the reasons why I like it so much.
    • Hardy and easy going. In a full sun location that can dry out quickly and it performs well.

      Sandra
      Ontario
      Canada
      8 years ago
      Above Average Superior performance, among my favorites, would recommend to others.
    • Does very well in Chicago

      Russell Studebaker
      Illinois
      United States
      8 years ago
      Outstanding My favorite plant, I recommend to others all the time and explain the reasons why I like it so much.
    • beautiful plants

      B Kolkema
      British Columbia
      Canada
      8 years ago
      Above Average Superior performance, among my favorites, would recommend to others.
    • We get western afternoon breezes and this is beautiful to see backlit.

      Russell Studebaker
      Oregon
      United States
      8 years ago
      Above Average Superior performance, among my favorites, would recommend to others.
    • Russell Studebaker
      Wisconsin
      United States
      8 years ago
      Outstanding My favorite plant, I recommend to others all the time and explain the reasons why I like it so much.
    • Russell Studebaker
      Indiana
      United States
      8 years ago
      Outstanding My favorite plant, I recommend to others all the time and explain the reasons why I like it so much.
    • I grow Karl Foerster in zone 4a where it has over-wintered for 4 years

      Susan
      Wisconsin
      United States
      8 years ago
      Outstanding My favorite plant, I recommend to others all the time and explain the reasons why I like it so much.
  • 4 Awards

    Award Year Award Plant Trial
    2005 Best Grasses at the Zoo Cincinnati Zoo and Botanical Garden
    2005 Best Grasses at the Zoo Cincinnati Zoo and Botanical Garden
    2005 Best Grasses at the Zoo Cincinnati Zoo and Botanical Garden
    2005 Best Grasses at the Zoo Cincinnati Zoo and Botanical Garden
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