Tag Archives: California Native Plants

Design trends

Plant California Natives Now

Bush poppies are fast growing and need no irrigation once established. ( Really )

With cooler weather and some rain, fall weather is here in the Santa Cruz Mountains. If you’re thinking about what plants you might want to add to your garden this planting season, California native plants are well suited to planting at this time of year, acclimating to their new homes without much stress. Here are some ideas to get you started.

By planting now, roots of new plants have a chance to grow during fall and most of the winter without having to supply nourishment to the leafy portion of the plant. Roots of deciduous plants still grow even after plants drop their foliage as long as the ground temperature is above 50 degrees. Cooler day and night temperatures slowly harden off the top of the plant to prepare for the cold days of winter.

Another reason that fall is the “no-fail” planting season is because plants put in the ground in fall need less water to establish. The plants themselves use less water since photosynthesis is slowed by shorter days even if it’s occasionally warm. Evaporation rates slow down also during fall so moisture in the soil lasts longer as well. Sometimes we get lucky with fall and winter rains perfectly spaced so the ground never completely dries out. As of October 17, 2024 NOAA predicts equal chance of above or below normal precipitation due to a weal La Niña forecast for out area. One can only hope we get our share.

Plants that thrive in dry, shady spots benefit especially from fall planting as they need established root systems before next year’s dry season. Dry shade sometimes occurs in places beyond the reach of the hose but also under native oaks. To protect the health of native oaks, it’s a requirement that plants underneath thrive with little or no summer irrigation.

King Edward VII flowering currant

Plants of proven success under these conditions include native currants and gooseberry. Red flowering currant is a show stopper capable of controlling erosion. In the spring, the long, flower clusters of this deciduous shrub will dominate your garden. There are many selections to choose from so if the huge white flowers appeal to you ‘White Icicle’ will be beautiful in your landscape. ‘Barrie Coate’ and ‘King Edward VII’ have spectacular deep red flower clusters and ‘’Spring Showers’’ has 8″ long pink ones. Grow in full sun to partial shade. This California native requires little water once established and is a valuable nectar source for hummingbirds.

Some other good California native shrubs for erosion control are western redbud, mountain mahogany, western mock orange, lemonade berry, toyon, snowberry, matilija poppy and western elderberry. Rbes viburnifolium, creeping mahonia, snowberry, ceanothus maritimus and ‘Anchor Bay’s are good groundcover selections.

Smaller natives that put down deep roots are yarrow, coast aster, California fuchsia, wild grape, mimulus, buckwheat, wild rose, sage and salvia.

Bush poppy (dendromecon rigid) is another native found right here in our area and needs no irrigation at all once established. Beautiful bright yellow, poppy-like flowers cover the plant in spring. Bush poppies are fast growing reaching 6 feet tall. They can be propagated from cuttings taken in summer and are pest and disease free.

Remember when setting plants on a steep slope to arrange them in staggered rows. Make an individual terrace for each plant and create a basin or low spot behind each one (not around the stem) to catch water. Set the crowns of the plants high so they won’t become saturated and rot after watering and make sure mulch does not build up around the stem.

Design trends

Ceanothus- The Most Valuable Plant

Ceanothus ‘Heart’s Desire

When the huge numbers of California Tortoiseshell butterflies showed up around here on June 10th, I learned a lot about the different species of ceanothus and how dependent we are on this plant. Because most of us live near or in a Wildland Urban interface we are aware of the benefits of ceanothus and other native plants. From erosion control to habitat, to seed and nectar for pollinators, birds and butterflies, ceanothus is a most valuable plant. A visit to any local nursery will tempt you to get one of each for your own garden. But are cultivars or “nativars” of ceanothus as valuable as native ceanothus?

Research is ongoing but there are only a few studies comparing the nutritional value of straight native species to culivars or nativars. Many may have as high en ecological value as native species but this is not absolute. Dark foliage, for instance, does not provided the nutritional value for leaf-eating larvae. There is so much that we need to study.

A cultivar of Carmel Creeper groundcover, Diamond Heights is good for erosion control.

The groundcover varieties I have used in landscape include Anchor Bay, Carmel Creeper, Heart’s Desire, Centennial and Diamond Heights. If deer frequent your landscape you should stick with Anchor Bay, Heart’s Desire and Centennial but the others are great in protected areas.

One of the upright types growing everywhere in the Santa Cruz Mountain is ceanothus thysiflorus. It’s one of the earliest native shrubs to bloom in our area. It grows along a narrow band close to the coast from Monterey to southern Oregon. There are many nativars of this variety. I like Julia Phelps with those electric blue flowers. It’s a hybrid of Wartleaf Ceanothus and Santa Barbara Ceanothus It’s similar in appliance to another popular nativar called ‘Dark Star’.

A great variety I often use when designing a garden is Ceanothus ‘Concha’ because it will accept summer water more forgivingly than most and tolerates clay soil more than other species. Joyce Coulter ceanothus also tolerates clay, summer irrigation and shearing better than other cultivars. It’s a good bloomer, drought tolerant and is covered in spring with wildly fragrant blue three-inch flower spikes.

Ceanothus is often said to be short lived. Most varieties need good drainage, little summer water and don’t need soil amendments. In their wild conditions ceanothus plants have a natural life cycle of 10-15 years although some live longer.

Several members of the ceanothus family can form a symbiotic relationship with soil micro-organisms and fungi, forming root nodules which fix nitrogen. This is a reason why fertilizing is not normally recommended. Adding fertilizer might kill off the good micro-organisms. Ceanothus are better left fending for themselves.

Carmel Creeper

Ceanothus provide excellent habitat for birds and insects. They are good for attracting bee and pollinators and are the larval host plants for the beautiful ceanothus silkmoth. Ceanothus seed is readily eaten by many local birds. Planting a ceanothus is an important step to attracting more birds and wildlife to your garden.

Early California Indians used the fresh or dried flowers of some varieties for washing, lathered into a soap. it has been said to relieve poison oak, eczema and rash.

Design trends

Knee High by the Fourth of July

Also known as Siskiyou Lewisia is an easy to grow perennial that thrives in sandy soils.

I don’t grow corn in my small, shady garden so I’m not sure how tall they’d be if by now if I planted on May Day when the soil was 50 degrees, but that’s how the saying goes. And from what I’ve read about the early hot weather in the midwest, their corn is higher than knee high. But this column isn’t about growing corn, it’s about climate smart plants that hold up to the heat. So let’s get started.

All this talk about “drought tolerant” plants or “water smart” plants is misleading in some ways. What really matters for the success of a plant in your garden is that they are climate smart. You can call the new California garden climate tolerant or climate adapted but it all comes down to the same thing. The plants you choose to grow in your garden should be able to naturally tolerate periods of lower than average water. This doesn’t mean no water during extremely long dry periods. No plant can live without water.

I have two books that I look to for plant ideas when called upon to design a garden in our area. This first was published by East Bay MUD in 2004 and is called ‘Plants and Landscapes for Summer-Dry Climates’. The other book I refer to regularly for ideas and information is ‘California Native Plants for the Garden’. Both are invaluable in these times of water conservation. One of the best tips each of them offer is to garden where you live.

Silver-leaf manzanita

All of us live in a summer-dry climate. Summer-dry gardens are naturally dry for long periods. Knowing which type of plant community you live in can make the difference between success and failure in your garden. Choose the right plant for the right place whether it’s a California native from an area with similar soil and exposure or a plant from another Mediterranean-like climate with growing conditions like yours.

Plant communities have evolved over time with geologic changes in climate, topography and soils. We have several district areas here- mixed evergreen forest, redwood forest, chaparral and sandhills.

If you live in a mixed evergreen forest you garden with trees like coast live oak, tan oak, madrone, bay and buckeye. Understory plants include ceanothus, coffeeberry, hazel and poison oak. Your soil contains serpentine and granite. Many other unthirsty plants like salvias, lavender, santolina, society garlic, giant feather grass, rosemary and rockrose do well here. California natives such as western mock orange (philadelphus lewisii), wild ginger and western sword ferns grow here also.

Mixed evergreen forest may also be found along canyon bottoms near streams where big leaf maple, white alder, cottonwood, and western sycamore trees grow. Most plant here grow lush in this deep soil. If you are looking to add something new to your garden here consider giant chain fern, aquilegia, dicentra, Pacific Coast iris and fuchsia-flowering gooseberry.

This mimulus auritanicus is growing in the hottest, driest conditions and thriving.

Chaparral areas are the hottest, driest slopes of these mountains. Dense thickets of manzanita, coyote brush, chamise, coffeeberry, ceanothus, monkey flower and sage are native here. These plants are adapted to little water and often have tiny, thick, waxy, light green or grayish leaves. Soils tend to be rocky and shallow with overlaying rock or a subsoil that is mostly clay. Plants here need to have an extensive root system that reaches widely and deeply for water. If you live here a classic combination would be the spring blooming western redbud and Julia Phelps or Dark Star ceanothus. The combination of magenta and electric blue flowers is unforgettable.

The sandhills near Quail Hollow and Bonny Doon around Martin Rd. are part of an ancient sandy sea floor that was uplifted, eroded and exposed. These sandy soils lack organic matter and nutrients and their white color magnifies the temperature of the summer sun. Unique, native plants like silverleaf manzanita and Ben Lomond wallflower live here. Buckwheat and sticky monkey flower do well here. You might also try growing Siskiyou Lewisia, a pretty little plant native to northern California, thrives in sand and gravel soils with good drainage. This 8″ tall hardy perennial blooms from spring to early summer with extremely showy flower clusters in colors ranging from apricot to pink, rose and bright cherry red. Mulch them with gravel or crushed stone.

Remember right plant-right place. Don’t try to force nature although most gardens do look better with some summer water. Closer to the house we expect a fuller look. Combinations I’m going to try this season include leucospermum paired with blue echium or grey-leafed westringia planted with red-flowering callistemon ‘Little John’.