Category Archives: Design trends

Design trends

Beautiful Rhododendrons

Every garden I visit these days has at least one gorgeous rhododendron in full bloom. They can’t help but be spectacular covered with those huge flower trusses. They sure make you stop and take notice. I still miss the two old ones I had in Bonny Doon before the fire. I would time my pruning and fertilizing to get the maximum blooms. They are easy to grow if you remember a few tips.

Because rhododendrons like air in the root zone, amend your soil liberally with organic matter. 50-60% is not too much. If you garden in clay, just plant them in raised beds or berms 1-2 ft above the original soil level. Rhododendrons like moist soil so top dress around your plants with several inches of mulch over the root zone, making sure the stem is not get buried. Pine needles, oak leaves or wood chips are good choices. Never cultivate around the plants as this would injure the surface roots. Finally, most rhodies thrive in partial shade or morning sun. The hot afternoon sun that we get during the summer would burn even those varieties that tolerate some sun. Since their leaves remain on the plant for several years you’d have to live with burnt leaf centers and edges for a long time if they get too much sun.

Rhododendrons contain toxic resins that are more concentrated in the foliage,so weevils have developed a resistance to pesticides along with a tolerance for the toxins in the leaves. Organic or even chemical sprays have little effect anymore according to a study funded by the Rhododendron Society of America and end up killing hundreds more predatory beetles and other beneficial insects in the process.

Applying parasitic nematodes to your soil is one way to control weevils. Other tactics include placing a shallow pan of water under the plant or a soup can filled with soapy water buried up to the top to attract and drown the adults . You can also try banding the trunks with tape or waterproof paper and smearing the bands with a sticky barrier like Tanglefoot. Spreading some coffee grounds under the plants also helps to discourage them from crawling up the trunk after they spend the night at the base of the plant. And if you’re really determined you can hand pick them after dark- effective but not much fun.

There are thousands of rhododendron varieties. By planting early, mid-season and late blooming types you can enjoy those huge, gorgeous flowers for months.

Cheer is one of the showy early bloomers. Large, pink flower trusses cover the 5×5 ft plant. It can take some sun and would be a good candidate if you have one of those gardens that receives and hour or so of afternoon sun.

For April blooms consider Edith Bosley. Similar to Purple Splendor it grows upright to 6 ft.tall but only 4 ft wide. Perfect for narrow spaces. Other mid-season bloomers that would make a splash in the garden include Golden Gate, a 3 ft compact orange hybrid and easy-to-grow, red-flowering Jean Marie de Montegue.

To extend your season add some late season varieties like Lee’s Dark Purple. Growing with a spreading habit to 4 x 5 ft wide, you’ll love its blue-purple trusses. Anah Kruschke also blooms late in spring with lavender pink flowers on a dense 5 x 5 ft shrub. A tough undemanding larger variety is English Roseum. This one grows 6 ft tall with lavender pink flower trusses and blooms in May.

Rhododendrons really contribute to the woodland or shade garden. They are long-lived and deer resistant. I’ve only heard two gardeners tell me that deer ate some of their flower buds last fall for the moisture content. Most likely those deer couldn’t read well enough to read the deer resistant list!

Design trends

Why Native Plants?

California native Siskiyou lewisia grow in rocky, dry soil.

Most of us would love to have a garden containing all California native plants growing happily in an ecosystem where everybody wins- birds, bees, insects, wildlife and us, of course. Our garden would contain flowers, shrubs, grasses, ground covers and trees all providing food, water, cover and nesting places. Trouble is most people are managing existing landscapes and gardens with a variety of established trees and plants, often including vegetable and herb gardens. So what’s a good citizen and steward of the planet to do?

National Wildlife Federation recommends that yards strive for 50-70% native plants. This refers to the biomass of the plants in the garden and not the number of plants so this is easier than you think to help the pollinators, contribute to soil health and control erosion.

California is a vast domain when it comes to natural features and different soils. From hills and mountains to deserts, valleys and ocean bluffs, there are 6000 plus plant species within our borders. Hundreds of these are showy and useful plants worthy of cultivation in our garden. Some, like ceanothus, have already been cultivated for a century or more, both here and abroad.

There are features of the California landscape that present a certain flavor and seasonal progression, quite distinct from that of the subtropics and year-round, moist forests that many traditional garden plants come from. Plants of hilly and mountainous areas are often found in rocky or sandy soils and require well-drained garden soils. Many plants of the chaparral have poor resistance to the root pathogens that thrive in a warm, moist soil and may not tolerate typical garden style irrigation in summer.

Philadelphus lewisii

Matching or creating the right conditions is the key to success to grow California natives. Planting on a raised mound or berm, for instance, is one way to drain water away from sensitive crowns. Knowing where in California a given native plant comes from can help you make the right decisions.

That being said there are many natives with an amazing broad tolerance of different conditions. Toyon (Heteromeles arbutifolia) grows in both sandy and clay soils as does yarrow (Achillea millifolium) which is also a good cut flower. Carex grass and Seaside daisy (Erigeron glaucus) also do well in most soils.

If you garden in clay soils, good native shrubs are Western redbud, manzanita, spicebush, bush anemone, ceanothus, garrya, Pacific wax myrtle, Western mock orange, blue elderberry, mahonia, California wild rose and snowberry. Native perennials for clay soil include coral bells, sticky monkeyflower (a good cut flower), salvias, deer grass, rubus and Dutchman’s pipe vine.

Sandy conditions require California natives that are decidedly drought tolerant. You may already grow many of our manzanitas and ceanothus. But do you also have lupine, lavatera, coffeeberry, buckwheat, fuchsia-flowering gooseberry, purple sage, wallflower or the beautiful Douglas iris?

Then there are the folks that live in the shade. Native plants from canyons and riparian areas will do well in your garden. They require some summer watering but that’s all. Native shrubs that tolerate bright shade are manzanita, spicebush, bush anemone, ceanothus, mahonia, Pacific wax myrtle, any of the ribes, wild rose, snowberry and huckleberry. Perennials for color are columbine, Western bleeding heart, California. fuchsia, Douglas iris and coral bells.

Where ever you garden, to provide food, nectar or berries for our winged friends be sure you have some flowering currant, sticky monkey flower, coffeeberry, salvia clevelandii, Dutchman’s pipe vine, wax myrtle, California fuchsia and aster chilensis.

Design trends

1000 Posts and Counting

Me picking dahlias at Karla DeLong’s Beeline Blooms.

It all started back in 2005 when my first column was published in the newly combined San Lorenzo Valley Press and the Scotts Valley Banner which was re-named the Press Banner. This is how it all began.

My father wanted me to be a writer and researcher for National Geographic, encouraging me to take writing and science classes. My interest in nature and photography was the easy part. It was the 60’s, though, and if you grew up then you know that one didn’t always do what was expected of you. I did study science at Humboldt State and Cal Poly, San Luis Obispo and aced the plant taxonomy and science classes.

After I moved here, I started working at a local nursery which really wasn’t work at all. Then one day I had an idea. I typed up a sample column and marched into the editor’s office for the Press Banner. Little did I know that he had taken horticulture classes himself and so had a soft spot for my idea to write a weekly gardening column. Next thing I know he’s saying he wants 5 columns, 400 words each, excluding prepositions, on his desk by Friday and the column would be called ‘The Mountain Gardener’ and not ‘Ask Jan’ which I had suggested. I knew my father would be proud. I was a newspaper columnist.

I don’t consider myself a horticultural expert but If I don’t know something I’ll surely find out. I know a little bit about a whole lot of subjects and if I could remember everything I’ve researched I’d be one happy camper. But when I reflect on the prior column over the years, it’s the funny stories I remember the most and I’ve got a lot of ‘em.

File this under “I should have known better.” After a large shade tree had to be cut down near my place I saw an opportunity to stage some pots of perennials on the cut stump. Well, nature had ideas of its own. Fungal decomposition of dead trees is a crucial process in our ecosystem and is driven by fungi that breakdown the wood’s cellulose and lignin. What I forgot was that the potting soil in the pots also has a woody component and the white fungus infiltrated the entire pot killing the plant in the process. Bottom line: you can’t fool Mother Nature.

I’ve written about my friend Robby’s exploits in his garden in 10 different columns going back to 2011. I’ve affectionately called him “The Serial Mole Killer” and he recently told me that this year the moles are the worst he’s had in several years. He’s also very good at trapping and relocating critters so it’s not always light out for everybody. Robby’s garden was featured in the Valley Churches Scotts Valley Garden tour in 2022 where he shared his irrigation, erosion, dry creek bed and succulent expertise. I’m lucky to have a knowledgable friend like Robby who always keeps me laughing when I visit him and his garden.

Funny stories I can’t forget include the trip I took to Guatemala, Honduras and Utila, an island off the coast of Honduras. It was on Utila that I saw plants growing in washing machine baskets. I thought it was a clever way to re-use old appliances but wondered why there were so many old washing machines on a tiny island. A local laughed at me for asking about them and told me the baskets protect their plants from the big blue crabs that come out at night. Seems they’ll sever the stems right at ground level and drag the whole plant into their hole. Also the baskets protect the plants from iguanas who will eat anything within two feet of the ground. And you thought deer and bunnies were a problem?

And don’t get me started on the time my dog Sherman licked all the moss/buttermilk concoction I was painting on a retaining wall to disguise it. Nor the client who dug up all the “dead” plants in his garden not realizing they were deciduous.

So that’s all folks. Thanks for reading.