Willow Branches Everywhere

Biologist Aaron Sunshine planting Willows

Fully-Grown Arroyo Willow

The recent rains have done wonders for our reservoirs and watersheds. It also happens to be the ideal time for putting plants in the ground for environmental restoration of our Alameda Watershed Lands. 

Of late, our Calaveras Dam Replacement Project biologists have devoted themselves to willows. A total of 36 willows have been planted by the downsteam building of the newly-constructed Replacement Calaveras Dam alongside Calaveras Creek. The types of willows planted were red willows (Salix laevigata), Arroyo Willows (Salix lasiolepis) and Narrowleaf or sandbar willows (Salix exigua). All are native to California and to our watershed. 

There are approximately 400 species of willows worldwide. You don’t have to look far to find them, all you need is a good water source. That’s because willows like their roots to be very wet, and they prefer year-round moisture.

The interesting part of willows is that they are easy to propagate. An entire willow tree can grow from a single branch.

The best time of the year to cut and plant is during the winter, preferably in January. Our Calaveras Dam Replacement Project biologists harvested branches from willows within the watershed and planted them along Calaveras Creek as part of the project's restoration plan.

The willows will be monitored annually for the next five years to ensure that they are growing and thriving. 

Once fully grown, our willow trees will provide good nesting for songbirds such a as the Woodwarblers, Song Sparrows, and the California Towhees. The new trees and will also be a good foraging habitat and cover from predators for many species too.

See you around the valley!





Fully-grown narrow-leaf willow.