DryStoneGarden

Aspens with California Poppy

Aspens in the Bay Area? Somewhat in keeping with snow on Mt. Diablo, not really the popular image of our area, but there they are. According to Sunset, P. tremuloides ‘generally performs poorly or grows slowly in lowlands; usually short lived in warmer climates.” The ones at the Tilden botanic garden seem to be doing well, though it’s true they aren’t large and did probably grow slowly. They were definitely one of the most beautiful things in the garden when I stopped off on my way home the other day. We get asked about aspens sometimes and have always advised people to plant birches instead, but clearly aspens can work, so maybe we need to modify that advice. The bot garden is in a cool micro-climate (small valley surrounded by hills) and there was ice on the lawn and on a few of the plants, so that might be helping these aspens. Next year I need to remember to stop off and see their fall color. This has been a good year for fall color in the Bay Area, so they were probably beautiful.

Redtwig Dogwoods with Aspens

Sunset also says aspens make a ‘good background tree for native shrubs and wildflowers.’ Indeed. I like how the redtwig dogwood and the aspens are both somewhat see-through, and how the colors are so strongly contrasting even as the upright forms are so similar. We’ve planted redtwigs against a light-colored wall a few times, and last week we planted a yellowtwig dogwood against a brick chimney. The line of aspens is just as architectural and works just as well for a backdrop.

Redtwig Dogwoods and Aspens

Specimen Manzanita with Manzanita Backdrop

One of my reasons for stopping at Tilden was to look at native plants in the winter and see what was blooming in December (Answer: not much, a few late blooms amongst the deadheads on some buckwheat and erigeron species, two raggedy grindelias still blooming, a few stray off-season blooms, and about one fifth or one quarter of the manzanita species.). We talk to a lot of people who think natives only look good for about half of the year and sometimes I find myself believing that a bit, too, so it was good to walk around and see which plantings looked good and which ones would look ratty to that percentage of the population out there who are skeptical of natives. A lot of the garden and a lot of the plants were looking really beautiful, even though it was a gray day right after a cold storm. The rainforest section was looking great (though it was too dark under the canopy to take photos) but I don’t think there’s much debate about how great the woodland natives can look. Probably the biggest problem for northern California natives is just that many people don’t think of them as California natives, instead mentally classifying them as Washington/Oregon natives.

California Fuchsia Planting

I think that when many people say they don’t like natives, they have a mental image of California fuchsia in winter, and when other people say they love natives, they have an image of Cal fuchsia in summer. This is a successful planting to my eyes, but this look seems like an example of what makes some people hostile to natives, a wild-looking plant in a rather wild-looking planting. It also seems to reflect the established popular image of a ‘native planting,’ even though natives can be used in so many other ways and to create so many different looks. I’ll try to return and take a photo from this same spot when the Cal fuchsias are blooming, because they are really pretty in bloom.

Coastal Bluff Planting

The buckwheats, another species not known to shine in the winter, looked good in some plantings and not so good in others. The Coastal Bluff section has a strong design, so the prominent buckwheat in the planting also looked fine and the planting would still look fine even if the buckwheat were replaced with a dying-back Cal fuchsia.

Cold Frame at Tilden

Hello Dudleya

The desert section had some cold-frames out in the southern California desert sections. There’s no question about Agave shawii looking good in the winter. They’re really a Baja native that had a few populations on our side of the border, but those populations have been displaced and now might only exist as revegetation plantings. San Marcos Growers says they’re growing it, so it might start showing up in nurseries more often. Apparently, it’s really slow from seed.

Agave shawii

Agave shawii

Ninebark Thicket

The ninebark thicket (Physocarpus capitatus) reminds me of a crustacean, either a limpet or maybe a barnacle. I doubt this is going to inspire many people to plant ninebarks or shear them into a limpet shape, but it’s actually being used pretty well here, an effective way to make a certain type of habitat plant look intentional and not too wild. And I bet the birds love it. It looks better than the Salvia leucophylla, which is generally considered more garden worthy but was looking just as deciduous and thickety as the ninebark. In fairness, the S. leucophylla is planted in a tough spot, up against a bridge on a steep slope leading down into a creek.

Salvia leucophylla, Purple Sage

Sugarbush, Rhus ovata

I just planted Rhus ovata (Sugarbush, an evergreen sumac) for the first time, three of them at my parents’ house. The Watershed Nursery has had a supply recently, one of the first times I’ve seen them available. ( — edit — my bad, I realized that I planted the other evergreen sumac, Rhus integrifolia.) Hopefully the ones I planted will look as good as they do here. I like the flower buds as much as I like their little white flowers. This one here looks ready to do a huge bloom in February or March, that time of year when even the native skeptics agree that California natives look beautiful.

Sugarbush, Rhus ovata

Update — And here is a March photo of that ninebark thicket in leaf. Still not the most ornamental plant in the garden, but not too bad.

Paeonia californica, California peony

The California peony is blooming at the Regional Parks Botanic Garden at Tilden in Berkeley. I’d never seen one blooming before. To quote Las Pilitas, “You need perfect drainage, a very green thumb, and luck with this one.”

Paeonia californica, California peony

Deborah Small’s Ethnobotany Blog has a beautiful photo of one growing wild.

— Addendum —

California Peony going dormant

A photo of the peony going dormant in early July.

Pt. Reyes meadow foam at the Tilden bot garden

Tomorrow is the Bringing Back the Natives Tour and I will be certain to visit two particular gardens on the tour, the Regional Parks Botanic Garden at Tilden and the Fleming garden, two of the states oldest and best gardens for California natives. The are great gardens on any day, and right about now is the time when they look their best.

The Fleming garden is the absolute must-see garden of the tour. It goes way beyond what is typical of a residential or native garden, and I think it’s especially interesting to also see the botanic garden on the same day. I don’t know exact history of either garden, but I do know that Jenny Fleming was involved with the botanic garden to some extent throughout the years, and her garden feels like a condensed, concentrated form of the botanic garden at a private home, with a lot of similar plants and combinations. Luke Hass, who does the maintenance for the Fleming garden, has a couple of articles about the garden on his website. RootedinCalifornia has some recent photos and the tour’s website has others. It’s an amazing garden that has to be seen in person to be appreciated.

meadowfoam and stream orchid

Both gardens are over fifty years old, which makes them unique places to see native plants used in Bay Area gardens. Often times on native tours it can be boring to see the same plants at every garden, but in this case it’s interesting to compare how the plants are used in the two settings. The naturalized plantings of meadow foam, Limnanthes douglasii, are a good example. In the Fleming garden it’s intermingled with stream orchid, Epipactis gigantea, while the Tilden garden has the yellow form, Pt. Reyes meadow foam, Limnanthes douglasii var. sulphurea, with Maianthemum. Meadow foam is an annual, but it’s growing in a way that only happens in a mature garden.

meadow foam and maianthemum

Partly as a result of seeing it at Tilden and the Fleming garden, I have it at my house as well, in the veggie garden in between some of the edibles and in our outer garden where it is growing up through the Snowberry, Symphoricarpos albus. It’s not the prettiest plant after it finishes blooming, while you wait for the seeds to form, but the flowers are charming and it combines really nicely with other plants.

meadow foam flower with snowberry foliage

Allium unifolium

We’ve been starting to add California native bulbs to our home garden and our landscape plantings, and so far, Allium unifolium is one of our favorites. A lot of the native alliums require perfect drainage and a summer dry period and would be difficult to source even if you thought you could get the growing conditions right. A. unifolium, though, is easy to find and grow; we read that it’s supposedly the most clay tolerant of the alliums, and so far that’s been the case. Also, because it’s considered garden worthy (the Dutch like it) and not just for native purists, you can actually find it in sufficient quantities to make an impact in a large garden, where it will spread somewhat aggressively if it’s happy. It’s beginning to bloom in several of our gardens now.

Allium unifolium in our garden

We were recently at the Regional Parks Botanic Garden at Tilden for their native plant sale, and I took pictures of the alliums that were blooming. The bed’s aesthetic (three foot high bed of stone holding 4-12 inch high plants) is more for collectors than for casual visitors, but it has some interesting stuff, of which Allium crispum sounds like the best bet to try in a garden. The Pacific Bulb Society has a good info page for North American alliums. Far West Bulb Farm also has photos and info and might be a source for some of them. I put photos of four alliums and the raised bed below. (more…)