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Silver Spike Grass

Achnatherum calamagrostis

$11.99
$11.99 $14.99
per Plant - 5" Deep Pot
Sale | Save 20%
ZONES  5-8 | Good to grow! Zone
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Exclusive. Achnatherum calamagrostis (Silver Spike Grass) is an outstanding Old World species grown for its late spring display of silver-green flower spikes. The seed heads age to tawny brown and hold on the plant into the fall. Drought Resistant/xeric. Introduced into cultivation in the US by Lauren Springer Ogden. 2006 Plant of the Year.

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Silver Spike Grass

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Description

A spectacular European native, Achnatherum calamagrostis (Silver Spike Grass) is both a graceful and free-flowering summer blooming ornamental grass. It will beautify your garden with its showy, silver-green flowering spikes that turn a rich tawny brown in the fall. For best garden performance Silver Spike Grass should be grown in the western US (and other higher altitude areas of the country) where summer humidity is low and nights are cool. Seed of this grass comes to us by way of Lauren Springer Ogden, who has pioneered the use of it in this country by successfully cultivating it in CO for over 8 years. Achnatherum is sure to be extremely popular as it is a distinctive, specimen-worthy species with highly visible areas of your landscape.  Flat of 9 plants will cover 30 square feet when planted together. 36" tall x 36" wide (seed/division propagated). 2006 Plant of the Year.

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As soon as your order is placed you will receive a confirmation email. You will receive a second email the day your order ships telling you how it has been sent. Some perennials are shipped as potted plants, some as perennial roots packed in peat.  The ‘Plant Information’ section describes how that item will ship. All perennials and fall-planted bulbs are packaged to withstand shipping and are fully-guaranteed. Please open upon receipt and follow the instructions included.

Perennials and fall-planted bulbs are shipped at the proper planting time for your Growing Zone. Perennial and fall-planted bulb orders will arrive separately from seeds. If your order requires more than one shipment and all items are shipping to the same address, there is no additional shipping charge. See our shipping information page for approximate ship dates and more detailed information. If you have any questions, please call Customer Service at (802) 227-7200 or contact us by email or chat.

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key features

Advantages
  • Easy To Grow
Light Requirements
  • Full Sun

Additional information

Planting Time
  • Spring / Summer
Soil Moisture
  • Average
Water Tolerance
Low-Water
Soil Type
  • Average Soil
  • Clay Soil
  • Sandy Soil
Mature Height
36" tall
Mature Spread
36" wide
Growing Zones
  • Zone 5
  • Zone 6
  • Zone 7
  • Zone 8
Ideal Region
  • Western Only
  • Suitable Above 7000 ft
  • West
  • Pacific Northwest
Awards
HCG Plant Of The Year
Special Groups
  • High Country Gardens Introduction
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