All posts by Jan Nelson

I am a landscape designer and consultant in the Santa Cruz mountains in California. I write a weekly gardening column for the Press Banner newspaper. I am also a Calif. Advanced Certified Nursery Professional and managed The Plantworks Nursery in Ben Lomond, Ca. for 20 years.
Design trends

Low Water-Use Plants for Birds & Butterflies

Tough California native, Penstemon h. ‘Margarita BOP’ blooms spring through summer and attract scores of hummingbirds and butterflies.

It sure has been a hot summer. Starting back in May when we had a couple heat waves, the hot weather just hasn’t let up and with the changing climate we can count on more of the same. I’ve had to adjust what I used to consider tough plants for hot, sunny spots but I haven’t given up, My palette is just smaller for un-thirsty plants for birds and butterflies. I want to conserve water and also enjoy my winged friends.

mimulus auritanicus

California native plants are always a good choice for difficult areas. In addition to workhorse shrubs like manzanita, toyon, ceanothus, coffeeberry, garrya, Catalina cherry, bush lupine and Pacific wax myrtle, showy natives like salvia, buckwheat, California fuchsia, monardella, wallflower, yarrow, lavatera, penstemon and sticky monkey flower are high on my list.

Everyone should have some lavender in their garden. Hummingbirds and butterflies both favor this plant and there are new introductions every year from growers. There are dozens of new varieties to choose from. Hidcote Superior forms a bushy compact mound with sensational purple flowers in early summer. Or you might try Royal Purple, Betty’s Blue, Violet Intrigue, Sachet or Royal Velvet. Goodwin Creek is an old stand-by that blooms from spring to late fall with deep violet blue flowers. For midsummer bloom plant Grosso which is a widely planted commercial variety in France and Italy. It’s possibly the most fragrant lavender of all. Spanish lavender blooms spring into summer if sheared. By planting an assortment of lavenders you can have a succession of flowers throughout the season.

Penstemon also lure hummingbirds and butterflies to the garden. They come in a wide range of colors and varieties from native species to garden hybrids. I especially like the red flowers of Garnet and the blossoms of the native Blue Bedder.

Another long blooming, tough plant is achillea Moonshine. Butterflies love to alight on the yellow flat landing pads of this yarrow. The dense flower clusters make good cut flowers and the gray-green foliage blends with all color in the garden. Yarrow need only routine care once established. They can take some watering although they endure drought once established. Cut them back after bloom and divide when clumps get crowded.

There are so many salvias to choose from and all are great additions to a tough-love garden. Autumn sage blooms summer through fall in colors ranging from deep purple through true red to rose, pink and white. Purple Pastel is especially beautiful covering 3-4 foot plants with blossoms filled with nectar for hummingbirds and butterflies.

Those who seek true blue flowers for their gardens might try planing salvia chamaedryoides. This elegant front-of-the-border plant has silvery foliage which sets off the brilliant blue flowers. Heaviest bloom is in late spring and fall. Deadheading encourages re-bloom. This salvia is drought tolerant but blooms longer and better with a little occasional summer water.

More un-thirsty bloomers that attract either hummingbirds, butterflies or both and are easy to grow are gaura, coreopsis and homestead purple verbena. Asters, Russian sage, black-eyed Susan, bee balm, mums, autumn joy sedum and cosmos are also on the menu of our winged friends. Many of these also make good cut flowers.

Plant some new water efficient plants for color that attract hummingbirds and butterflies. Afterwards spread fresh wood chips or compost to mulch the soil. This insulates and protects shallow roots from the heat of the summer sun. While keeping the soil cool, mulch slows the evaporation of water from the soil so it stays moist longer.

Where ever you garden, to provide food, nectar or berries for our winged friends be sure you have some flowering perennials.

Design trends

Lessons from the Fire

First year California yerba santa with lupine after the fire.

My house in Bonny Doon burned down on August 19, 2020. I know this because my neighbor sent me a photo the next day after the fire had moved on down the slope. The next spring quite a few of my plants were making a valiant effort to regrow despite being burned to the ground. I saved about 75 plants that I now call “pets” at my new place in Boulder Creek. So this is a story of survival and renewal.

Mother Nature has millennia to recover from a forest fire. Us, not so much. Much of the 86,000 acres burned in the CZU Lightning Complex fire is now covered densely with the pioneer native plants yerba santa and Ceanothus thyrsiflorus that thrive in disturbed soils like after a fire. The land will sort itself out in the decades to come. The ceanothus will feed the soil enabling trees to regrow. But for now it might seem too much of a good thing especially for those rebuilding after the fire. These are some of the things I’ve learned about fire and renewal.

Ceanothus is so beautiful in the spring, forming lovely cluster of blue and white flowers that produce many seeds. Birds and other wildlife love them. The heat from the fire triggered dormant seeds in the soil to germinate in large numbers. The post-fire conditions, with plenty of light and minimal competition, are ideal for the growth of woody shrubs and this dense shrub layer has rapidly grown over your head in many areas, especially Big Basin.

As a native species, ceanothus plays an important role after a fire but it may also increase wildfire risks. It is relatively short lived. Observations after the 2009 Lockheed fire show that the death of ceanothus as the canopy thickens leads to a significant accumulation of dead woody material in the forest understory. Management will be necessary especially around homes, old growth trees and other important natural resources.

If you are interested in monitoring or managing ceanothus on your property you can reach out to Brian Woodward of the University of California Agriculture and Natural Resources. He has a blog where I found out this valuable information.

Around my old property in Bonny Doon as well as Boulder Creek, native California yerba santa has taken over. It germinates from seed during the first post year growing season. Seeds that have lain dormant in the soil for decades will germinate following a fire. It’s possible that their hard coated seeds will not germinated except when scarified. So fire may break the seed’s dormancy by burning off the litter layer and exposing the seed to sufficient light to allow germination.

It does provide some forage for our black-tailed deer especially in the winter when more desirable plants are scarce. Deer consumption increases during the first two years following a fire. But now at year 4 after the fire, yerba santa has grown to its full height of 8 feet and is hard to control. Spreading by seed and underground runners it’s taken over many burned properties. The leaves secrete flammable resins and waxes which build up and make the leaf surface gummy. The branches are also glutinous. Older, resinous leaves are dropped during summer producing highly flammable litter.

With shallow roots within the top 8 inches of soil and multi branching rhizomes every 8-10 inches yerba santa is hard to control. It is a diminished survivor and plants gradually die out, however, as the community matures and is displaced in climax communities by chaparral, ceanothus cuneatus, and manzanita.

An interesting fact is that Native Californians used the leaves of yerba santa in the form of a tea to treat respiratory sickness, colds and stomach aches.

Foxglove that self sowed in a Mexican Weeping Bamboo that survived the fire.

Back here in my little garden, my surviving “pets’ are blooming and happy. It took a couple of years for the roots to recover after being burned so badly but the stems eventually re-sprouted. I lost all my maples and other trees as only the redwoods survived but I’m happy that I have flowers for the hummingbirds and what more can you ask for?

Design trends

Grasses in the Garden

Pheasant Tail grass is carefree and long lived.

What was I thinking trying to talk a client out of adding grasses to her former lawn area? I gave her all the reasons she should focus on other low water use, low maintenance, deer resistant plants, but I can’t get the vision of grasses back lit in the evening light and swaying gently in the breeze out of my mind so she’s going to get her wish. There are so many that do well in our area to choose from. Here are just a few that are my favorites.

There’s an ornamental grass for every type of garden. Whether you are striving to create the perfect perennial border or have a hot dry slope, grasses can work in harmony wherever you place them. There are some that are made for the shade, some that are perfect additions to a small water feature and many that are invaluable in container gardening.

Grasses are distinguished from other plant families by their growth habit. They grow upward from the base of a leaf or shoot and can regrow from the crown when cut back. There are other grasslike plants that resemble grasses in their growth habits and are often some of the best companions for interplanting with grasses. These include New Zealand flax, carex family sedges, libertia, chondropetalum, kangaroo paw, lomandra, dianella, cordyline and liriope to name just a few.

Are sections of your garden hot and dry? Grasses are survivors and are good choices for sunny spots that get little irrigation. Good drainage is a must for these plants so amend the soil with plenty of organic matter before planting. Combine drought tolerant grasses like Mendocino Reed Grass (pennisetum foliosa) with companion plants and a few accent rocks to complete your dry theme. If you like blue foliage, try Elijah Blue fescue grass with Amazing Red flax for a show stopping combination.

If you are trying to create a focal point or destination in your garden and think the texture. light and movement of a grass would be perfect, look to the taller varieties. A personal favorite is Stipa gigantea or Giant Feather Grass. They take drought conditions once established but also will grow with regular garden watering. The beautiful flower spikes are good in dried arrangements. Giant Feather grass looks great with the purple flowers of penstemon ‘Midnight’.

There’s a reason old favorites like Karl Foerster Feather Reed Grass is so popular in landscapes. It doesn’t get too tall or overpowering in the smaller garden and its upright habit is neat and tidy. Outside my front door are several Overdam Feather Reed Grasses that are spectacular when backlit by late afternoon sun. What’s not to love about a stunning variegated grass with white and green stripes? Now in the summer, pink flower plumes sway above the foliage. iI the fall, the buff-colored flowers spikes will remain until I cut everything back to 6 inches just before new growth starts in winter.

Pheasant Tail grass is another popular grass that is carefree and long-lived. It grows to only 3 by 3 feet, is not fussy about soil and looks good anywhere you plant it. It combines beautifully with the sky blue flowers of Russian sage and is extremely drought tolerant once established.

Hakonechloa ‘All Gold’

Caring for grasses is easy. As a rule of thumb, if it browns in winter then cut it back before new growth starts. If it’s evergreen by nature just clean up outside leaves. Most like well drained soil and are tolerant of a wide range of garden conditions. You shouldn’t fertilize heavily because an excess of nitrogen can lead to lush, soft growth that tends to flop. Mulching with 2 inches of compost yearly will keep the soil and your plants in good shape. Water grasses regularly during their first year to help get a good root system established. Even grasses that are normally touted as drought-tolerant require a season or two to become fully established.

These are just a few of the places where grasses can enhance and add beauty to your garden.