Calamagrostis x acutiflora 'Karl Foerster'

Calamagrostis x acutiflora ‘Karl Foerster’

Feather reed grass

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does not flower in April

Plant does not flower in May

Plant does flower in June

Plant does flower in July

Plant does flower in August

Plant does flower in September

Plant does not flower in October

Plant does not flower in November

Plant does not flower in December

  • Botanical name: Calamagrostis x acutiflora 'Karl Foerster'
  • Common name: Feather reed grass
  • Family: Poaceae
  • Plant Type: Perennial, Deciduous
Flower colour:

Green

Foliage colour:

Bronze

Feather reed grass, Calamagrostis x acutiflora, is an upright grass with good year-round interest, bearing feathery plumes in summer and bleached stems catching frost through winter. Its architectural shape lends it to use as a striking focal point in gardens. It can form clumps of stems up to 2m high if grown in moist soil.

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Calamagrostis x acutiflora ‘Karl Foerster’ is prized for its stiff, erect habit, making it an ideal choice for planting en masse to form a screen, or in small groups to add height and definition to a border. ‘Karl Foerster’ is one of the earliest perennial grasses to emerge in spring. Its green summer flowers fade to buff.

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Grow Calamagrostis x acutiflora ‘Karl Foerster’ in moist but well-drained soil, in groups in a mixed border, or en masse to form a large, dramatic screen. In early spring, cut it back to around 12cm to allow new growth to emerge.

How to grow Calamagrostis 'Karl Foerster'

  • Plant size

    1.8m height

    65cm spread

  • Aspect

    South facing, west facing

  • Sun exposure: Dappled shade, full sun, partial shade
  • Hardiness: Hardy
  • Soil type: Clay / heavy / moist / well drained / light / sandy

Plant calendar

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Plant
Plant

Do not Plant in January

Do not Plant in February

Do not Plant in March

Do not Plant in April

Do Plant in May

Do Plant in June

Do Plant in July

Do Plant in August

Do Plant in September

Do not Plant in October

Do not Plant in November

Do not Plant in December

Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does not flower in April

Plant does not flower in May

Plant does flower in June

Plant does flower in July

Plant does flower in August

Plant does flower in September

Plant does not flower in October

Plant does not flower in November

Plant does not flower in December

Divide
Divide

Do not Divide in January

Do not Divide in February

Do not Divide in March

Do Divide in April

Do not Divide in May

Do not Divide in June

Do not Divide in July

Do not Divide in August

Do not Divide in September

Do not Divide in October

Do not Divide in November

Do not Divide in December

Prune
Prune

Do not Prune in January

Do not Prune in February

Do Prune in March

Do Prune in April

Do not Prune in May

Do not Prune in June

Do not Prune in July

Do not Prune in August

Do not Prune in September

Do not Prune in October

Do not Prune in November

Do not Prune in December

Calamagrostis 'Karl Foerster' and wildlife

Calamagrostis 'Karl Foerster' has no particular known value to wildlife in the UK.

Is Calamagrostis 'Karl Foerster' poisonous?

Calamagrostis 'Karl Foerster' has no toxic effects reported.

No reported toxicity to:

No reported toxicity to Birds

No reported toxicity to Cats

No reported toxicity to Dogs

No reported toxicity to Horses

No reported toxicity to Livestock

No reported toxicity to People

Plants that go well with Calamagrostis 'Karl Foerster'