Non-native Ground Cover

These plants are incompatible with Portola Valley indigenous plant materials and will crowd them out.  Do not plant them.

Hedera canariensis	Algerian Ivy
Hedera helix	English Ivy
Vinca major	Periwinkle
Vinca minor	Dwarf Periwinkle
Hypericum calycinum	Aaron's Beard  Creeping St. John's Wort
Nassella tenuissima	Mexican Feather Grass*
Arctotheca calendula	Cape Weed

*  These are perhaps the most threatening of all.  Use every effort to halt the spread of these plants.

Photo credits are located here.