13.11.2014 Views

Vegetation Management and Maintenance Plan - Watsonville ...

Vegetation Management and Maintenance Plan - Watsonville ...

Vegetation Management and Maintenance Plan - Watsonville ...

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Table 4. Levels of Invasive Weed Infestations <strong>and</strong> Potential Control Techniques, <strong>Watsonville</strong> Wetl<strong>and</strong>s Trail System Project Area<br />

Common<br />

Name<br />

Scientific Name Invasive Weed<br />

Ranking<br />

Infestation<br />

Threshold<br />

Growth Pattern<br />

Potential Control Techniques<br />

Yellow star<br />

thistle<br />

Bull thistle<br />

Centaurea<br />

solstitialis<br />

High Greater than 25<br />

plants or patch<br />

greater than 15 sq.<br />

ft.<br />

Annual<br />

Spread by seed,<br />

including seed on old<br />

flower heads. The bristly<br />

seed coat attaches to<br />

equipment, vehicles <strong>and</strong><br />

animals.<br />

<strong>Management</strong> Goal: Reduce number of patches to

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!