UC Davis introduces new Arboretum All-Stars collection of water-wise recommendations
Marine Blue sage is one of 68 new Arboretum All-Stars added to recommendations by UC Davis Arboretum and Public Garden. Courtesy of UC Davis Arboretum and Public Garden
Likely no other water-wise plant collection has done so much for Sacramento landscapes. Now, the beloved Arboretum All-Stars are getting a makeover to reflect our whiplash weather.
“The UC Davis Arboretum and Public Garden is proud to introduce the new climate-ready lineup of Arboretum All-Stars – 130 plants selected to thrive in hotter and drier conditions and withstand extreme weather events all while supporting pollinators and local wildlife,” announced the arboretum. “These resilient, sustainable choices build on nearly 20 years of All-Star success, a program that has shaped thousands of home gardens and public landscapes across California.”
The new Arboretum All-Stars make their official debut Saturday, Sept. 27, at the arboretum’s fall kickoff plant sale. This members-only plant sale, set for 9 a.m. to 1 p.m., includes a great selection of the new All-Stars as well as the returning favorites.
Read more about Saturday’s sale here: https://sacdigsgardening.californialocal.com/article/471700-monday-sept-22-arboretum-fall-plant-sale/
When the UC Davis Arboretum released its original Arboretum All-Stars collection almost 20 years ago, water-wise plants were hard to find. California was in the midst of extreme drought in 2008 and many homeowners were ready to tear out their lawn for something that needed less water.
Tested in the university’s own gardens, the Arboretum All-Stars lived up their name. Available primarily via the Arboretum Teaching Nursery, these were 50 beautiful, flowering plants that were perfect for our suburban gardens and proven to need less water. The All-Star list quickly grew to 100 as more people had suggestions and recommendations.
A lot has changed over the past two decades including climate awareness – and weather patterns. Sacramento is seeing wetter winters along with prolonged droughts. Plants need to be resilient as well as sustainable. And more nurseries are supplying water-wise plants and pollinator-friendly California natives.
Arboretum experts took all that into consideration when they tackled an All-Star brand refresh. Of the 100 All-Stars, 38 have been retired but 68 have been added.
“When we started this refresh, our biggest priority was helping gardeners build resilient gardens to withstand extreme weather like a hotter, drier climate,” explains Rachel Davis, Arboretum GATEways horticulturist. “That meant retiring plants that needed more water or were hard to grow, and highlighting those that are tough, reliable, and great for pollinators.
“We also wanted to make sure the plants we recommend are actually available in nurseries, so gardeners can bring them home and be successful right away.”
Arboretum staff are sure gardeners will love the new All-Stars.
“One of my favorites is Marine Blue sage, a small silver-leaved shrub that has blue-purple flowers that blooms from summer through winter and is nearly effortless to grow,” says Davis. “We’re also excited about yellow bells, a large shrub that can be pruned into a small tree and looks great throughout the year. The yellow or orange flowers light up a garden and attract hummingbirds, native bees, and songbirds.
“And of course, California natives like western redbud and hummingbird sage remain stars – they’re beautiful, resilient, and support local wildlife.”
The All-Stars can build the backbone of a resilient garden that can last for decades.
“This isn’t just a plant list – it’s a tool for transformation,” Davis says. “We’re helping people build habitat-rich, water-wise landscapes. We want gardeners to feel empowered – not overwhelmed.”
How did they determine Arboretum All-Stars 2.0? “Each All-Star must offer strong habitat value (providing food, shelter, or nesting for wildlife and pollinators) or require low to very low irrigation making them ideal for a future of more extreme weather,” says the Arboretum.
All-Star plants also had to be tested in the UC Davis Arboretum and meet several key criteria, including:
Attractive, with seasonal beauty or sensory interest.
Easy to grow with minimal maintenance and adapted to local soil and climate conditions.
Tolerant of heat and cold under current and projected climate scenarios.
Not invasive and able to be sourced and propagated at the Arboretum’s seasonal plant sales.
“Many All-Stars also have bonus traits like being California natives, offering year-round appeal, tolerating seasonal flooding, providing shade, or being fire-smart and easy to propagate at home,” the Arboretum says.
The refresh also comes with a new online plant database that offers more detailed profiles and search filters along with gardening tips and maintenance guidance to help gardeners make informed choices.
In addition to Saturday’s event, the Arboretum Teaching Nursery will host public sales Oct. 18 and Nov. 15 with no membership necessary.
See all the All-Stars here: https://arboretum.ucdavis.edu/arboretum-all-stars.
For more details and directions to the nursery: https://arboretum.ucdavis.edu/ .
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Flowers in My Back Yard Series
April 28: Majestic Matilija poppy is worth a look
April 21: Celebrate roses, America's favorite flower
April 14: Small flowers with outsized impact
April 7: Calendulas do double duty
April 3: Make Easter lilies last for years to come
March 31: In praise of a pollinator magnet (small-leaf salvias)
March 24: Azaleas brighten shady spots
March 17: The perfect flower for beginners? Try zonal geraniums
March 10: Keep camellias happy for years to come
March 3: Fruit tree blossoms are a fleeting joy
Feb. 27: Are your roses looking rusty?
Feb. 24: Treasure spring daffodils now and for years to come
Feb. 17: How and why to grow wildflowers
Feb. 10: Let's talk Valentine's Day roses
Feb. 3: Why grow flowers?
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Garden checklist for week of April 19
After this midweek storm, start getting serious about spring gardening. Flowers are blooming about three weeks ahead of schedule. That includes weeds!
* Get ready to swing into action in the vegetable garden – if you haven’t already. As nights warm up over 50 degrees, set out tomato, pepper and eggplant transplants.
* From seed, plant beans, beets, cantaloupes, carrots, corn, cucumbers, melons, radishes and squash; wait on pumpkins until May. 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. Late April is about the last chance to plant summer bulbs, such as gladiolus and tuberous begonias.
* Transplant lettuce and cabbage seedlings.
* 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? Give citrus trees a low dose of balanced fertilizer (such as 10-10-10) during bloom to help set fruit. Keep an eye out for ants. If leaves look yellow, your tree may need an iron boost -- apply some chelated iron fertilizer.
* 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 needs nutrition. Give shrubs and trees a slow-release fertilizer. Mulch with a 1-inch layer of compost, which helps the soil, but keep it a few inches away from trunks and stems.
* 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.
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Food in My Back Yard (FIMBY) Series
Lessons learned during a year of edible gardening
WINTER
Is edible gardening possible indoors?
Hints for choosing tomato seeds
Why winter is the perfect time to plant fruit trees
When to plant? Consider staggering your transplants
How to squeeze more food into less space
Plant a fruit tree now -- for later
Win the weed war by tackling them in winter
Tips for planting bare-root trees, shrubs and vegetables
Time to give vegetable seedlings some more space
Ways to win the fight against weeds
FALL
Dec. 16: Add asparagus to your edible garden
Dec. 9: Soggy soil and what to do about it
Dec. 2: Plant artichokes now; enjoy for years to come
Nov. 25: It's late November, and your peach tree needs spraying
Nov. 18: What to do with all those fallen leaves?
Nov. 11: Prepare now for colder weather in the edible garden
Nov. 4: Plant a pea patch for you and your garden
Oct. 27: As citrus season begins, advice for backyard growers
Oct. 20: Change is in the autumn air
Oct. 13: We don't talk (enough) about beets
Oct. 6: Fava beans do double duty
Sept. 30: Seeds or transplants for cool-season veggies?
Sept. 23: How to prolong the fall tomato harvest
SUMMER
Sept. 16: Time to shut it down?
Sept. 9: How to get the most out of your pumpkin patch
Sept. 2: Summer-to-fall transition time for evaluation, planning
Aug. 26: To pick or not to pick those tomatoes?
Aug. 19: Put worms to work for you
Aug. 12: Grow food while saving water
Aug. 5: Enhance your food with edible flowers
July 29: Why won't my tomatoes turn red?
July 22: A squash plant has mosaic virus, and it's not pretty
July 15: Does this plant need water?
July 8: Tear out that sad plant or baby it? Midsummer decisions
July 1: How to grow summer salad greens
June 24: Weird stuff that's perfectly normal
SPRING
June 17: Help pollinators help your garden
June 10: Battling early-season tomato pests
June 3: Make your own compost
May 27: Where are the bees when you need them?
May 20: How to help tomatoes thrive on hot days
May 13: Your plants can tell you more than any calendar can
May 6: Maintain soil moisture with mulch for garden success
April 29: What's (already) wrong with my tomato plants?
April 22: Should you stock up on fertilizer? (Yes!)
April 15: Grow culinary herbs in containers
April 8: When to plant summer vegetables
April 1: Don't be fooled by these garden myths
March 25: Fertilizer tips: How to 'feed' your vegetables for healthy growth