This species of semi-woody Salvia has produced some of the best for our climate. Shocking pink, relatively large flowers decorate the upward stems of this vigorous and long blooming perennial. To 26″ tall and forming a semi-woody shrub. In essence it is a subshrub which is woody with time but capable of freezing to the ground and returning from the base. The vivid flowers appear from May to frost and are a delight for pollinators, hummingbirds and pink-o-philes. Full, hot sun in a warm position in rich, WELL DRAINED SOIL. Double dig the soil before planting to incorporate oxygen and make it easier for water to reach the roots. Do not prune back in spring until you see new growth. Either from the tips or the base depending on how cold the previous winter. Cut back hard then and it will zoom back to its former stature in no time. Hot sunny places, hell strips, containers. Excellent on hot slopes.
Biome: Western Native
Native is a relative term. Plants don’t follow political boundaries and in fact they cluster and move according to climate and to a lesser extent soils and soil moisture. Turns out for instance, that the climate of Portland is not too dissimilar from the middle elevations of the Sierra Nevada in California. And as the planet waxes and wanes through ice ages you’d be amazed at the distance plants migrate due to climate. In fact, if you went back in time 11,000 years ago at the end of the last ice age the taxa composition of the Portland area was identical to what you currently find on the upper slopes of Mt. Hood at 5,000′. Cold, snow, montane with Mountain Hemlock, Engelmann Spruce, Lodgepole pine and Aspen. In reality plants are always on the move.
Between ice ages- the last interstadial
More relevant is our most recent interstadial, the warm period between ice ages that peaked around 6500 years ago. Ice ages are broadly caused by the obliquity of the earths orbit (its oblong) and the change in the axis. Serendipitously during the height of this last warm period perihelion (the sun’s closest axis to earth) occurred in the Northern Hemisphere summer increasing solar insolation (sun heat energy). Currently, perihelion occurs in winter (Jan. 5, 2020) over our continent and that somewhat cancels out the effect. This increased solar insolation during the warm interstadial did several things: First, it increased the annual temperatures to those we have only surpassed recently and it decreased precipitation and increased the length of the annual summer drought. During these warm periods there is a great shift in south to north flora movement. At the peak of the interstadial warm period the Eugene area most likely had a climate and flora composition of the Grants Pass area today. Portland likely had a climate and taxa somewhat similar to modern Roseburg. That would be a lot more Oaks and Madrone and much less Maple and Douglas Fir. This passage to the north of flora extends poleward and it is also during this period we see the intrusion of Pacific Madrone Arbutus menziesii and Quercus garryana Oregon white oak into British Columbia. Climate change is mimicking our warm interstadial so far. Species from the south are rapidly moving north- and faster all the time.
Broadening the description
So, we choose to list WESTERN NATIVES and not just Oregon Natives in one category. We should always include natives in our gardens. They are not only climate adapted, they give our gardens a regional identity and most importantly they support indigenous fauna. Climate change adds complexity to the mix. Our planet will be heating up too fast for plants to migrate. That means that many will find the safest homes in our gardens. We seek out the most unusual natives. Our attempt to expand the palette rather than the six same species that are used (abused) over and over. By all means go native!
Climate Adapted Plants for Gardeners in the PNW
Sambucus mexicana ssp. cerulea
Our locally native blue elderberry makes a good very large shrub or small garden tree. It has beautiful pinnate foliage, large fragrant umbels of white flowers followed by large clumps of edible blue fruit.These appear in May/June quite a bit later than the red druped species S. racemosa. Incredibly fast growing in youth it responds in a robust way to extra water in summer. Adaptable to nearly any soil type. And very drought tolerant as it matures. Fall color is often yellow but also lacking. Birds feast on the berries through winter. Otherwise they hang ornamentally on the bare twigs- also very showy. To 14′-18′ tall and naturally forming a vase shape. Lifespan is typically less than 30 years. Give it room to spread. Edible real fruit set occurs in more well established plants. Widespread throughout the west. Spreads liberally by bird droppings. Oregon native plant.
Pacific Snakeroot is a fascinating native perennial that is native west of the Cascades from British Columbia south -to the tip of South America. A summer deciduous perennial whose presence is really from January to July- before slipping into summer/dry dormancy. This unique plant forms handsome palmate leaves that are edged in black when young. As summer approaches the plant elongates up to 30″ tall and begins to bloom. Tight gold/charteuse inflocenscence that must attract very specific pollinators. I know for a fact that it draws butteries because I vividly remember them visiting this plant in the country. I’ve always found this easy growing plant pleasant and I have to admit that it is present in just about every biome west of the Cascade Crest. At the coast it is nearly evergreen – no need for summer dormancy. The small spiny seeds that perch at the top of plant are carried away by animals. Adapted to a LOT of soil conditions including compacted xeric clay. Forms increasing rosettes to 18″ across. More than likely you will find seedlings. Found in the Willamette Valley with Dodecatheon, Camassia, Rosa, and in shade with Symphoricarpos and Polystichum. Full sun to full shade. Not eaten by deer. Oregon native plant.
Schizachyrium scoparium ‘The Blues’
A fantastic grass that performs wonderfully well in our climate. A clumping grass with very upright blue foliage. In summer inflorescences rise above the leaves with fine fluffy whitish flowers- provides a dramatic hazy effect. In autumn the 28″ tall grass becomes a whole other color palette. Deep raspberry and purple with tints of red before going over to all all reddish orange. An excellent color trip not the way to dormancy. When dormant it remains a presence and looks nice through winter. Cut down to the ground in late winter/early spring to make way for fresh new foliage. Not evergreen. Average to enriched well drained soil with light summer water. Established plants in reasonably good soil will sale through summer drought with no ill effects. Clumps expand over time to 2′ wide. Full sun. Easy grass. May self sow in open disturbed soil.
Scutellaria suffrutescens
Texas Cherry Skullcap is a wildflower with a mission. To bloom – not just a little but in sheets for all of summer with no supplemental irrigation. And I’ll be damned if it doesn’t do that. Forms lows domes to 5″ high by 1′ wide and is smothered in cherry pink flowers from June well into autumn. Rich to average well drained soil and occasional summer irrigation. Cut back in spring after new growth has commenced. Full all day sun, reflected heat and not much else. Long lived and virtually carefree. One of the best surprises in my garden of the past 10 years. Excellent perennial that survives, grows and blooms prolifically with no summer water. Even in the drought and heat of 2021. Extraordinarily adapted to baking hellstrips.
Sedum divergens
Oregon native Sedum that is found at mid and high elevations of the Cascades. It makes its home on recent road cuts and rocky, gravelly cliffs. Small rolly polely green succulent leaves line trailing stems. Very juicy. Forms a thick evergreen mat in full sun to part shade in well drained soil. Excels in enriched soil that also drains. Light to regular summer water to retain luster otherwise completely adapted to summer drought. Rock walls, containers, rock gardens. Easy to grow native that is one of our most attractive stone crops. In late spring 4″ stems rise with clusters of bright yellow/gold star shaped flowers. As with all Sedums they are coveted by pollinators. Takes on red tints in cold weather. Evergreen. Oregon native plant.
Sedum oreganum
Not hard to tell where this stone crop is endemic. It resides mostly in the middle elevations of the western Cascades. Rocky slopes, cliffs, and road cuts is where you find the clusters of small green rosettes that makes large colonies. In summer 4″ stems arrive topped with bright gold/yellow flowers- a pollinators dream. Little spreading plant to just inches high but expanding to several feet wide in well drained, somewhat enriched soil with light summer water. Full sun to quite a bit of shade. Forms a dense mat and may be used as a small scale weed blocking ground cover. Easy to grow plant. Roots into the ground as it spreads- evergreen. Excellent winter container subject, it will happily trail over the edge of pots. The yellow flowers are specific to some of our most endangered pollinators. Very cold hardy. Oregon native plant.
Creamy stone crop is a common succulent of mid to higher elevations of the Oregon Cascades – it can also be found in the Siskiyous. This is a common plant on rocky slopes, scree its even adaptable to heavier soils. Gray white leaves are crowded into rosettes. In spring stems rise to 6″ tall and produce creamy light yellow colored flowers. Absolutely adored by pollinators this very easy to grow perennial adapts very well to gardens. Its useful in rock gardens, troughs, containers in full sun to very light shade. Light summer water to very little, A classic plant of the Oregon Cascades. Primarily above 2000′. Evergreen. 3″ tall out of bloom and spreading to form large clumps several feet across. Not bothered by deer or rabbits. Lovely Oregon native. The cream/ivory flowers are a welcome respite where all other Oregon sedums are bright yellow. . Oregon native plant.
Sedum spathulifolium ‘Cape Blanco’
An old standard form of our native and widespread Stonecrop. This form is unique for its very pale gray almost white rosettes of leaves. It spreads vigorously in rich to average well drained soil with light summer water. Soil should be light and not compacted. It makes a very good small scale ground cover. Also excellent in rock gardens and even winter containers. Great long lived and easy container subject. To just inches high a single plant can reproduce to several feet wide. In late spring 6″ stems grow upright to display masses of brilliant yellow flowers. Adored by all pollinators. When cold wet weather arrives the entire plant takes on red/raspberry tones. Very pretty. Easy to grow native perennial. Full sun to quite a bit of shade. Oregon native plant.
Sedum spathulifolium ‘Carnea’
Interesting form of Stone crop that has foliage that takes on brilliant red/purple tints in cold weather or with drought stress. Powdery blue foliage is arranged in rosettes at the end of 3″ stems. Starting with the outer most leaves the vivid tints become most apparent in mid-late summer through winter. Red stems support clusters of gold/yellow flowers in early summer. Excellent pollinator plant as are all Sedums. Easy to grow in any soil that drains reasonably well. In regular ground double dig the soil to incorporate oxygen into the soil and avoid compaction. It will spread to multiple feet across in short order. In rock gardens it can be a little rambunctious around delicate plantings. Give it room and plan for it to spread. Great in seasonal containers, troughs, rock walls. Light summer water speeds the growth rate- it also inhibits the bright color. Oregon native plant.
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