Pacific Northwest Native Plant Profile: Red-flowering Currant (Ribes sanguineum)


Although red-flowering currant (Ribes sanguineum) is a deciduous shrub, it offers year round appeal and habitat, making it a favorite among Pacific Northwest gardeners and wildlife, alike. Not one December goes by that I don’t marvel at its ability to hold onto many of its seasonally colorful leaves until the solstice or beyond, and this year was no exception. Just a short while later — following barely two months of downtime in the new year — strikingly gorgeous flower clusters burst forth prolifically at the same time that fresh leaves emerge. No wonder another of its common names is “winter currant.” Fast forward a few more months, and dark dusty-blue berries, a favorite of many bird species, will adorn this multi-stemmed shrub. 

The sole genus in the Grossulariaceae family, Ribes means ‘currant’ in medieval Latin. One of about 30 currant and gooseberry species in the Northwest, sanguineum refers to the reddish color of the flowers. It’s one of those native plants that had to be chaperoned by Scottish botanist David Douglas to Britain—where it was introduced into cultivation in the 1820s—before it acquired a return transatlantic ticket to popularity with gardeners on its home turf. Not too small or huge, it can usually find a home in places that offer well-drained soil and at least a quarter day of sun.

How it grows
Red-flowering currant naturally occurs at the edge of forests as well as open, rocky slopes and disturbed sites, at low to middle elevations from southwest British Columbia into Washington and Oregon between the Pacific coast and the Cascades, and as far south as central California.

Wildlife value
Pendulous flower clusters, which consist of numerous lightly fragrant, pink to reddish tubular flowers, bloom in profusion along this shrub’s many stems. They offer nectar and pollen at a time when early-emerging pollinators—such as queen bumble bees who must secure a nest and provide for offspring all by themselves—have little else to eat. The early blossoms are also attractive to birds, especially hummingbirds, but also bushtits, making this species a hub of wildlife activity for well over a month. Later on, when berries ripen as summer wanes, birds such as American robins and cedar waxwings (pictured, below) feast; we can also eat them but they are rather tasteless. The small, lobed leaves may provide food for zephyr (Polygonia gracilis zephyrus), Ceanothus silkmoth (Hyalophora euryalus), and other butterfly and moth larvae, which in turn supply food for insectivorous birds. 


Try it at home
Red-flowering currant prefers sun to part sun, and well-drained soil. While tolerant of clay soils, it doesn’t do well on poorly drained sites. Useful for erosion control on slopes, it may eventually form a thicket, which is helpful for wildlife that needs cover.

Mature size varies from around six to ten feet tall; width is typically similar, so do allow it enough space. A fast grower, it may reach four or five feet in just a few years and even produce blossoms as well. If you’re looking to use this shrub in a border, space them five to ten feet apart (on the low end if you want some density and overlap). Although this shrub is quite drought tolerant when established (after two to three years), water it deeply but infrequently in the hot summer months thereafter, especially if your site receives a lot of sun or reflected heat from buildings or fencing, or if drainage is quick. Plant in fall for best results.

The only downside to this lovely shrub is its relatively short life: typically just 20 to 30 years. But replacement is easy since it readily self-sows. Thus, propagation is best achieved via self-sown seed, which are easily dispersed by birds or fall to the ground below. If you want to DIY, collect seeds as soon as fruit is ripe in mid to late summer, remove the pulp and dry them in a shaded place; then sow in autumn (outdoors to allow for stratification). Seed reportedly has a long shelf life if stored in a cool/dry/dark place.


Grab a partner
Since red-flowering currant grows in a fairly wide range of habitats, there are a number of plants with which it interacts in intact ecosystems. For best ecological and gardening results, choose associated native plants that live in communities that currently grow or likely would have grown in your immediate area. In the Pacific Northwest, some of the plants that red-flowering closely associates with include Douglas-fir, bigleaf maple, madrone, bitter cherry, oceanspray, vine maple, elderberry, mock orange, serviceberry, manzanita, salal, sword fern, kinnikinnick, and others. 

Buy plants propagated from source material that originated as close as possible to your site. Using such “local genotypes”  helps ensure that you get plants that are well adapted to your area and preserves the genetic diversity that helps plants (and animals) adapt to changing conditions. Ask growers and nurseries about their sources if you’re unsure.

Although many cultivars—with a range of flower color—have been developed, it’s best to choose true species or varieties found in nature. A related species for very moist places is wild gooseberry (Ribes divaricatum), which has edible fruit.

© 2019 Eileen M. Stark

Cedar Waxwing Flocks are Back!

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I had planned to write a different post today, but quickly changed my mind when I caught sight of 100 to 200 cedar waxwings in my Portland yard. Last fall a huge flock was attracted to our two fig trees that were laden with ripening fruit well out of our reach. This year only one fig tree is fruiting, but there’s still a mass of succulent food for their hungry mouths. These birds also love berries and I photographed them on a red-flowering currant shrub (Ribes sanguineum) and Cascade Oregon grape (Mahonia nervosa), two of many PNW native species that support these birds. Situated near our front door, the currant shrub stops people in their tracks while it’s flowering in March, and now it’s a waxwing magnet. I watched as they eagerly picked off the berries and swallowed them whole (pictured, above).

Cedar waxwings are exquisitely beautiful birds—sleek, with silky, shiny, colorful feathers that softly blend together like watercolors. Adults have a somewhat droopy, ragged crest and a debonair black mask, outlined in white, which makes them so alluring and exciting—as in, where have you been all my life? Males have black chins and throats, whereas females’ are slightly duller and juveniles’ are streaked. Tail tips are usually yellow, wider in males and narrower in females and juveniles. In my photo you can just barely make out little reddish, waxy tips on the wing feathers, hence the common name. The function of the secretion is not fully known, although it is likely important in courtship. So dashing!

The Bohemian waxwing is similar but slightly larger, and has grayish feathers on breast and belly, instead of a soft yellow. They also have white and yellow wing patches, which cedar waxwings lack. According to Seattle Audubon Society, Bohemians are a northern species that migrate down to Washington in winter. The cedar waxwings we see are likely year round residents who travel around in search of food. Both species are monogamous and breed in open, wet areas with dead or downed wood, or in woodlands with mature conifers.

Exceptionally gregarious, these birds are often seen in large flocks, especially in autumn. You may hear them before you see them, with their very high-pitched, whistle-like trills. They mainly eat sweet fruit and even feed it to their young after a few days of insectivorous cuisine (like the majority of land birds who feed their babies insects). During breeding season waxwings need more protein and show their expert insect-catching abilities in mid-air, often over water. Insects that live on plants, like scale, are also on their menu. For medium sized, fairly stocky birds (about seven inches in length), they are quite acrobatic and can even hover in place to grab a bit of fruit when a perch isn’t handy.

Waxwings aren’t suffering from habitat loss quite as much as most species, since they can eat increasingly common exotic fruits. However, they “are vulnerable to window collisions as well as being struck by cars as the birds feed on fruiting trees along roadsides,” says the Cornell Lab of Ornithology. But native plants are best for the vast majority of wild species, so to attract waxwings to your Pacific Northwest yard, grow indigenous trees and shrubs that produce small fruits, including serviceberry (Amelanchier alnifolia), madrone (Arbutus menziesii), dogwood (Cornus spp.), western juniper (Juniperus occidentalis), black hawthorn (Crataegus douglasii), honeysuckle (Lonicera ciliosa and L. involucrata), mountain ash (Sorbus sitchensis and S. scopulina), and strawberries (Frageria spp.). Keep your eyes and ears open and look for them in parks, forest edges, open woodlands, and gardens—these beautiful birds could visit your yard, too!

Reference

© 2014 Eileen M. Stark

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