Information about Pampas Grass Questions About Pampas Grass Asked by Anonymous on Q. What varieties of pampas grass are suitable to zone 5b in southern Maine? Female pampas grass. Answered by GKH_Susan on Certified Expert A. Erianthus ravennae is considered hardy pamapas grass (to zone 4) but its plumes aren't as thick as the pampass grass hardy to zone 7. The ...
A. Cortaderia selloana, or Pampas Grass is hardy to zone 5. In looking at one map of "potential planting area", I noticed that it did not include Colorado. If I planted one, I would consider it to be an annual until the plant proved otherwise. There is another ornamentell grass that has the same leaf, but the bloom scape is not as "poofy". That plant is known as Hardy Pampas Grass, the ...