• All
  • Articles
  • Videos
  • Plants
  • Recipes
  • Members

How to Help Purple Fountain Grass Survive the Winter

Comments ()  |   |  Text size: a A  |  Report Abuse  |  Print
close

Report This Article

How to Help Purple Fountain Grass Survive the Winter

Reason for flagging?

Comments

Submit

Share:    |  Email  |  Bookmark and Share

Overview

Elegant with its vase-like shape and drooping seedheads, purple fountain grass (Pennisetum setaceum and cultivars) is among the most popular of ornamental grasses for the garden and containers. Although a marginally hardy plant, surviving winters in USDA plant hardiness zones 8 through 11, it will reseed itself and sprout back in the spring in colder regions after frost danger has passed. In areas where it may survive the cold winter, where temperatures dip no lower than 5 degrees Fahrenheit, retaining the foliage and planting it well before winter improves its chances.

Step 1

Plant purple fountain grass early in the growing season. Providing ample time for a newly transplanted grass to establish before the winter improves its chances of survival. However, in cold winter regions, it still will not survive prolonged subfreezing soil temperatures.

Step 2

Moisten the soil around the fountain grass leading into autumn. Although quite drought-tolerant, a grass can have reduce vigor and be stressed if water is severely lacking leading into the autumn. The soil should never be soggy.

Step 3

Place a thick, loose layer of mulch around the base of the grass after the killing autumn frost. A 4- to 6-inch covering of oak leaves or straw can shield the dormant roots of the grass from fluctuating winter temperatures between day and night and shield it from bitter cold.

Step 4

Retain the frost-dried foliage and seed head plumes on the grass clump across the winter. This is particularly true in areas where this grass species is marginally hardy to the winter, such as in chillier parts of Zone 7.

Tips and Warnings

  • Pennisetum setaceum is regarded as an invasive weed in many subtropical and mild-winter regions. Its ability to produce lots of seeds that scatter and germinate across the landscape has proven particularly dangerous in these areas, choking out native plants. Do not plant this species in areas such as peninsular Florida and Hawaii.

References

  • Learn2Grow.com: Pennisetum setaceum

Who Can Help

  • Garden.org: USDA Plant Hardiness Zone Finder
Keywords: ornamental grass, fountain grass, overwintering Pennisetum

About this Author

James Burghardt has written for The Public Garden, Docent Educator, numerous non-profit newsletters and for Learn2Grow.com's comprehensive plant database. He holds a Master's degree in Public Horticulture from the University of Delaware and studied horticulture and biology in Australia at Murdoch University and the University of Melbourne's Burnley College.