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Arboretum Waterway habitat project gets big boost

$5.4 million grant allows for project's completion

Artist's rendering of arboretum
This artist's rendering shows what the Arboretum Waterway project will look like when completed. (Courtesy UC Davis Arboretum)

A long-awaited transformation at UC Davis is a step closer to reality – the completion of the Arboretum Waterway habitat project.

The university has received a $5.4 million grant from the California Natural Resources Agency to finish the “Arboretum Waterway Flood Protection and Habitat Enhancement” project. The public is invited to a virtual community meeting via Zoom to discuss the project at 7 p.m Thursday, Feb. 24. Advance registration for the meeting is required; sign up here: https://bit.ly/3uBcST1

Phase 1 of the project was completed in 2018. That phase engineered water flow and replanted native vegetation near the arboretum’s Wyatt Deck, through the Redwood Grove to the eastern end of the Arboretum Waterway.

Four years later, the arboretum can now tackle the remaining three phases of the waterway’s makeover, starting at Lake Spafford (near Mrak Hall) and extending west to the campus equestrian center. Besides the new grant, the university will contribute $2.5 million in deferred maintenance funds to the waterway project.

“We are ecstatic about this project,” said Kathleen Socolofsky, assistant vice chancellor and director of the Arboretum and Public Garden, in an official release. “It has all come together thanks to many thoughtful years of planning and collaboration with faculty and other campus partners. The proof of concept for our overall plan is flourishing and now we can finish the transformation.”

Also known as Putah Creek (although it doesn’t actually connect to that creek), the Arboretum Waterway forms the backbone of the arboretum as well as serves as part of the campus flood control system.

Expected to be completed in 2024, the remaining phases will remove concrete walls that now line the waterway and replace them with gently sloped earthen banks studded with trees, shrubs and native plants. As a home to birds and other wildlife, the waterway will be reshaped with islands in the stream, narrows to speed water flow and pockets of marshlike wetlands.

In addition to helping wildlife, the project will also greatly benefit students – especially those studying wetland habitat restoration – by providing hands-on job training. Working with the arboretum in the restoration project will be the California Conservation Corps and the Center for Land-Based Learning’s SLEWS (Student and Landowner Education and Watershed Stewardship) program.

Learn more at https://arboretum.ucdavis.edu .


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Garden Checklist for week of April 21

This week there’s plenty to keep gardeners busy. With no rain in the immediate forecast, remember to irrigate any new transplants.

* Weed, weed, weed! Get them before they flower and go to seed.

* April is the last chance to plant citrus trees such as dwarf orange, lemon and kumquat. These trees also look good in landscaping and provide fresh fruit in winter.

* Smell orange blossoms? Feed citrus trees with a low dose of balanced fertilizer (such as 10-10-10) during bloom to help set fruit. Keep an eye out for ants.

* Apply slow-release fertilizer to the lawn.

* Thoroughly clean debris from the bottom of outdoor ponds or fountains.

* Spring brings a flush of rapid growth, and that means your garden is really hungry. Feed shrubs and trees with a slow-release fertilizer. Or mulch with a 1-inch layer of compost.

* Azaleas and camellias looking a little yellow? If leaves are turning yellow between the veins, give them a boost with chelated iron.

* Trim dead flowers but not leaves from spring-flowering bulbs such as daffodils and tulips. Those leaves gather energy to create next year's flowers. Also, give the bulbs a fertilizer boost after bloom.

* Pinch chrysanthemums back to 12 inches for fall flowers. Cut old stems to the ground.

* Mulch around plants to conserve moisture and control weeds.

* From seed, plant beans, beets, cantaloupes, carrots, corn, cucumbers, melons, radishes and squash.

* Plant onion sets.

* In the flower garden, plant seeds for asters, cosmos, celosia, marigolds, salvia, sunflowers and zinnias.

* Transplant petunias, zinnias, geraniums and other summer bloomers.

* Plant perennials and dahlia tubers for summer bloom.

* Mid to late April is about the last chance to plant summer bulbs, such as gladiolus and tuberous begonias.

* Transplant lettuce seedlings. Choose varieties that mature quickly such as loose leaf.

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