Weed maps of the Top-10-Worst
intentionally planted Persistent Exotics,

from a survey of 13 Federal land managers in the Western United States in 1995.
Maps copyright © 1998 by Craig Dremann, co-owner of the Reveg Edge,
P.O. BOX 361, Redwood City, CA. 94064 (650) 325-7333
This is a supplement to Craig's Juicy Native Grass Gossip Research No. 6
"Weeds & Persistent Exotics on Public Lands"


The maps are arranged by the combined votes of the land managers, and within each map the numbers indicate what ranking each manager gave for that species on their list of the top 10 worst intentionally planted persistent exotic plants.

weed map weed map
No. 1. Orchardgrass...................................No. 2. Timothy



weed map weed map
No. 3 . Smooth Brome............................No. 4. Intermediate wheatgrass


weed map weed map
No. 5. Hard or sheep fescue..................No. 6. Crested wheatgrass


weed map weed map
No. 7. Perennial and annual ryegrass...........No. 8. Sweet clovers


weed map weed map
No. 9. Pubescent wheatgrass......................No. 10. Tall fescue "Alta"

Updated April 30, 2016. Back to Craig Dremann's main Contents page.