English Holly Ilex aquifolium
English Ivy Hedera Helix
n. 1. The deposition of seeds spread by bird, wind, humans, and animals, usually pertaining to invasive seed sources degrading natural ecosystems. 2. “Seed rain” describes the problem of invasive seed sources crossing both public and private property boundaries.
Invasive Update: Recent studies show English holly is outnumbering native trees 9 to 1 in Seattle-area forests and is doubling every eight years. Holly “has the potential to become a dominant species in both number of individuals and area covered within a few decades”(Dr. David Stokes, UW Bothell). The spread of English holly and ivy in regional forests can have detrimental effects on native flora and fauna potentially affecting timber, fishing, and recreational industries.
Only YOU can prevent plant invasions.