Flowers are always at a premium in shade, and late season bloomers for shade are not profuse. This wonderful white flowered form of this hardy Begonia is a sparkling white treat. Masses of snow white flowers on white pendant stems decorate the top of the plant from August to October. The foliage with leaves shaped like large deep green wings are an excellent back drop to feature the contrasting pure flowers. This is a wonderful and very different effect than the the much more common pink flowered selections. The purity of the flowers is divine and they seems to appear from nowhere often in the hottest days of summer. At our wholesale nursery I found myself stopping to look at this beautiful perennial every time I passed it. It is exceptionally pretty Part shade to high overhead shade in rich soil with regular summer irrigation. Though it will arrive smaller with less flowers without water. Not bothered by slugs or snails it rises with the opulent green foliage to about 2′ tall before flowering commences. Very easy and long lived perennial. It persists with quite a bit of neglect. Mulch after planting to even out soil moisture. Avoid blasting reflected heat and drought. Often self sows and also propagates by small bulbils. This is never out of control and is usually welcome. Forms expanding patches to several feet wide. Disappears entirely in winter, nada and it arrives late in spring (be patient) it is more than hardy to cold. Wonderful plant Thank you Peter for this plant.
Biome: Dry Shade

Dry shade offers a particular challenge to PNW gardeners. In fact, it can be the hardest location to satisfactorily grow plants. Many gardeners have dry shade, a tall canopy of Douglas Fir or Oregon White Oak or even neighborhood street trees that can conspire to rob plants not only of light but water as well. And to complicate matters, the more you irrigate dry shade near trees the more tree roots you get and the more competition for your lovelies. The solution is to depend on plants that have these three adaptations: dry tolerance, root competition, low light conditions.
We’ve amassed a list of plants that really will thrive in these conditions. A good deal of these plants are native to the forest understory in Asia, they are built for serious competition with Bamboo. Many of our very best dry shade plants are from the Pacific Northwest and already inhabit dry woods. Invite these plants into your garden, they play an important role.
Prepare the soil as you would any rich perennial border. Add and incorporate compost and mulch. Give each plant a handful of all organic fertilizer to speed root growth and establishment and water faithfully for the first season. In these conditions an annual application of mulch is not obscene and will reap great rewards. In time you can water much more infrequently.
Climate Adapted Plants for Gardeners in the PNW
Begonia grandis ‘Heron’s Piroutte’
Cold hardy Begonia that we love as a dependable and pretty late blooming perennial. Large wing shaped leaves have a reverse of light red. In late summer to early autumn to 30″ tall upright plants produce pendant clusters of pink/off white very showy flowers. Rich moisture retentive soil in part shade to shade. Great long lived plant for borders, shady glens. the shadows of ponds. Disappears entirely in winter. On occasion bulbils that appear in the leaf axils will detach and produce new plants. Move easily or share with friends. Not bothered by snails/slugs.
Blechnum spicant (Struthiopteris spicant)
The second most common fern in western Oregon Deer fern is a lovely native evergreen clumping perennial that is invaluable. The tiered upright and then settling to horizontal mid green glossy fronds are handsome all the time. To 2′ wide and 2′ tall (when fronds are emerging). Rich, moisture retentive soil high in organic matter. Light summer water in part shade to shade. Familiar fern of the Oregon Cascades but very widespread. High deer resistance. Excellent native fern for life between Rhododendrons and Pieris that are ancient. This fern loves part shade and cool moist soils but has a bit of drought adaptation as well. Its supremely adapted to to the rough life of competition. Useful plant that looks very good year round. Design by Vanessa Gardner Nagel Seasons Design. Oregon native plant.
Boorinda angustissima
Little leaf CLUMPING Bamboo has risen to the top as one of our favorite Bamboos. Rapid growing with culms shooting quickly to 10′ tall, they then become clad in masses of tiny mid-green leaves as the culms begin to leaf they slowly sink down. The effect is a a wide spreading fountain. The clump increases painfully slow though and the 1/2″ culms crowd together at the base. Part shade to shade in any well drained soil. Extremely drought adapted for a bamboo. Though it does not run you must give it a wide berth to arch. Amazing texture of green fountains. Culms are purple upon expanding. Light summer water. Protect from reflected heat of hot walls. Takes pruning exceedingly well. Responds almost immediately as a denser plant. It appears best to prune once the culm has completely unfurled. Then head back the culm from the top. If you against pruning it sounds brutal but it actually looks quite natural and does not really diminish the plants grace.
Buxus sempervirens ‘Graham Blandy’
Hard to find but so useful columnar boxwood. Graham becomes a 10″ wide pillar up to 6′ tall or taller within a decade. Very easy to keep it much smaller. Prune reliably to retain a tidy demeanor. Deep green foliage is thick and handsome year round. Average soil, light summer water. Full sun to full shade- no difference in performance. Very cold hardy. Grows 6″ a year.
Buxus sinica ‘Sunburst’
Useful and pretty and so tough this is a yellow variegated form of Korean Boxwood and its a fantastic dwarf shrub. To just 2′ x 2′ in 7 years this slow growing evergreen shrub is ideal as a hedge or trim it into a crazy shape and make a focal point. Adaptable to full hot sun to part shade. Great in winter containers. Hardy way below 0ºF. A good shrub or hedge in cold gardens or areas blasted by subfreezing east wind. Very good deer resistance. Light summer water in rich, well drained soil. Avoid crowding/shading from other plants in too close of proximity. Easy to grow- good looks year round. For a hedge plant on 2′ centers.
Camellia japonica ‘Black Magic’
If you’ve never been to the Camellia festival at the Portland Japanese Garden in Feb/March you really wouldn’t know that there are fantastic Camellias out there (not just the raw hamburger colored doubles that you see in front of every house). We got this amazing cultivar there and we are always on the lookout for the very true reddest Camellia. This is one of those. Glossy bright green serrated leaves make a wonderful upright growing shrub to 8′ x 4′ in 7 years. In February-April semi double huge true deep red/black flowers appear- they are profuse over the whole plant. Full sun to shade in rich, well drained soil. Regular summer water to establish then a bona fide low water plant. Woodlands, Ann Amato’s garden. Wonderful color early in the season.
Camellia japonica ‘Yamoto Nishiki’
Extraordinary Higo Camellia that is wildly showy and fun to grow. Higo Camellias are a form where the stamens rather than being clustered together in the center are instead splayed out in the shape of a star against smaller flat petals. They are surprisingly rare in the United States. Its a different look for a japonica and we love it. Moderately fast growing handsome glossy evergreen shrub for full sun to shade. To 8′ x 5′ in 7 years. Regular summer water speeds growth and increases flower bud set. Mid-season bloomer with flowers opening from February on. Rich to average soil, definitely apply ample mulch when planting. Good looking shrub at all times- w/ a somewhat formal appearance until the blooms open. 4″ wide flowers have flat petals that are white striped and stippled in peppermint red. Takes low water conditions when established. Long lived.
Camellia sasanqua ‘Hugh Evans’
Rare, obscure, insanely heavy blooming fall and winter blooming Camellia sasanqua. Individual flowers are not formal or stiff, instead the the petals are separated, loose and vivid pink. They appear en masse from October to January and decorate the lithe arching stems in pretty cascades of flowers. Blooms are exceptionally cold tolerant for a sasanqua enduring temperatures into the low 20’s and still remaining fresh. No bother though as a parade of buds exists to replace spoiled blooms. Full sun to quite a bit of shade- without the expense of blooming. Fast growing, vigorous open shrub that takes well to pruning in spring to encourage density- build blooming wood. Rich, to average well drained soil with light consistent summer water. A very wild and informal appearing Camellia and we love it. Glossy deep green foliage. To 5′ x 7′ and arching. Light flower fragrance.
Camellia sasanqua ‘Otome Sazanka’
This is one of my favorite fall blooming sasanquas. Beginning in November and continuing to about the first of the year it produces copious double flowers of a soft, antique pink. The shading of the petals give the impression of an aged flower. VERY pretty. Very dark green foliage is glossy on an upright and then distinctively arching shrub to 3′ x 5′ in 6 years. Give this elegant shrub room to spread, it will grow faster than you think. Full sun to part shade in rich soil with regular summer irrigation. Established plants can survive on just several drinks per summer. This sasanqua does not have the sweet earthy fragrance that many do. The soft pink 3″ wide flowers are born in profusion. Very easily trained as an espalier. Open flowers are cold hardy to about 27ºF. Incipient flower buds are much hardier. Good looking shrub year round. Very elegant late blooming sasanqua that is welcome late in autumn. A very old Japanese selection where this species is native.
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