Feather Reed Grass
Feather Reed Grass is a flower in the Poaceae family. It grows best in full sun to part shade with medium moisture, and is listed for USDA zones 4-9.
Varieties
1 · sorted by days to maturity▸Feather Reed Grass
PROPAGATION CATEGORY: Ornamental grass (division, sterile) (not in original seed catalog). Use: Strongly vertical accent; early feathery plumes.
Feather Reed Grass (Calamagrostis × acutiflora, e.g. 'Karl Foerster') is a sterile clumping grass prized for its narrow, strongly vertical form and early wheat-colored plumes.
Growing notes: Botanical name: Calamagrostis × acutiflora|Hardiness zones: 4-9|Propagation: division|Light: Full sun to part shade|Water: Medium|Mature size: 3-5 feet
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Growing timeline
Care & troubleshooting— extension-sourced, with citations
Something looks wrong?
Describe what you see on your feather reed grassand we'll rank the likely causes — most likely first, least-invasive fix first.
Corn earworm
Pestmoderate- CulturalPlant early and choose tight-husk varietiesstrong evidence — extension confidence
Set out early plantings, which face lower earworm pressure, and choose tight-husked varieties whose long, snug husk slows larvae from reaching the ear.
- OrganicApply oil-Bt drops to silksmoderate evidence — extension confidence
About five to six days after silks emerge, apply a few drops of vegetable or mineral oil (mixed with a labeled Bt per the label) to the silk at each ear tip to smother young caterpillars in the silk channel.
Japanese beetles
Pestmoderate- CulturalHandpick into soapy water· every 1 days · ~4 wksstrong evidence — extension confidence
In early morning when beetles are sluggish, knock them into a bucket of soapy water; daily removal also reduces the scent that draws in more beetles. Skip the lure traps, which tend to attract more beetles than they catch.
- CulturalCover plants past bloommoderate evidence — extension confidence
On crops that have finished flowering and set fruit, drape a row cover or netting to keep beetles off without blocking pollination during bloom.
Phosphorus deficiency
DeficiencymoderateUnusual this time of year.
- CulturalCheck soil test and soil temperaturestrong evidence — extension confidence
Purpling in cold spring soils is often temporary, since cold roots can't take up phosphorus that's actually present; warm weather usually resolves it, so confirm a true shortage with a soil test before adding phosphorus.
- OrganicAdd phosphorus only if the test calls for itmoderate evidence — extension confidence
If low phosphorus is confirmed, work a phosphorus source into the root zone per the test recommendation, and keep soil pH in range since extreme pH ties up phosphorus.
Wireworms
PestmoderateUnusual this time of year.
- CulturalRotate away from grassy groundstrong evidence — extension confidence
Avoid planting susceptible crops right after sod, pasture, or grass cover, where wireworms build up; rotate to a less-favored crop and let infested beds dry out between plantings.
- CulturalBait-trap to monitor· every 5 days · ~3 wksmoderate evidence — extension confidence
Bury pieces of carrot or potato or a handful of soaked wheat seed as bait when soil reaches about 50F, check after several days, and remove the worms you find to gauge and reduce pressure.
Aphids
Pestlow- CulturalBlast off with water· every 3 days · ~2 wksstrong evidence — extension confidence
Knock colonies off with a strong jet of water in the morning; repeat every few days. Light infestations rarely need more.
- OrganicInsecticidal soap - label use only· every 1 wk · ~3 wksmoderate evidence — extension confidence
For persistent colonies apply insecticidal soap to undersides per label. Avoid open flowers.
Common corn smut
Diseaselow- CulturalCut out galls before they open· every 1 wkstrong evidence — extension confidence
Watch through the season and cut out smut galls while still firm and white, before they rupture into black spores; remove them from the garden and bury or trash them rather than composting.
- CulturalClean up debris and ease off nitrogenmoderate evidence — extension confidence
Remove crop debris after harvest rather than tilling it under, and avoid excess nitrogen and plant wounding, both of which favor smut.