Treasures Of The North And Winter: Redtwig Dogwood (Cornus Sericea)

In addition to the birches, willows, and mountain ashes which make up the broadleaved gang of the Boreal north, one can also find a nice collection of dogwood, sometimes nearly to the Arctic treeline.  One in particular ranges even further north and bit further south than our Sorbus friend which we visited on ye olde blog yesterday, the magnificent Redtwig Dogwood (Cornus Sericea).

All but the last two of these pictures are taken from a tamarack swamp/fen (pretty sure it is actually a prairie fen) about two miles from your author's dwelling near South Lyon, Michigan.

While most winter interest deciduous plants try to fall back on great features like berries or persistent fall foliage, the Redtwig adds spice to the landscape with wood alone.

They like the same sort of cold winters that Sorbus seems to like, but because they like to get their feet good and soaked (or at least within root range of some plentiful water; I have seen them higher up on stream and pond banks), they don't range as far south into the Appalachians as the Mountain Ash or spruce and firs do.  There are some amazing cool, wet areas in West Virginia and Maryland where this dogwood and its best tree friend, the Tamarack (Larix Laricina) can be found at the far end of their eastern southerly range.  On the other hand, they extend well south into parts of Mexico where a combination of persistent water and artificial north provided by altitude allow them to thrive.  A subspecies is also found along the Pacific coast as far south as the mountains around Los Angeles, a rare find for a climate which does not have much in the way of eastern North American wetlands beyond its vernal pools (which does in fact have some populations of this remarkable plant).

USGS Geosciences, please never stop giving us awesome maps.  We love you.  Very much.

That said, they are indeed a northern plant, and I would definitely classify them even as a Boreal plant, and thus another gift of the winter lands.  Around here, they are a common feature of the swampier parts of the world, and they often form pretty amazing gatherings, as if nature did have some sort of aesthetic plans in mind and desired mass plantings.

Filling a swampy niche and having evolved within a balance, they never tend to completely form monocultures, even while they do dominate the scenery.  When the sun catches these things they turn an incredible bright ruby, but even in the dull overcast winter days they are far more brilliant than most cameras can even hope to demonstrate.

 

They grow slowly, and the old wood does turn brown even while the newer wood is the same amazing red:

Not the best image, but this old wood versus new wood is demonstrated by the emerging red stem from the central branch here.

In general, though, they tend to form an understory beneath taller wet foot trees like cottonwoods, the lovely Tamarack...

 ...and in a particular lovely combination of color and grace, the Black Willow (Salix Nigra):

Finally, they look amazing against the snow, almost as if to proclaim that not only is this winter and snow not so bad, it is positively enchanting.

Thankfully, Redtwig is pretty popular in the nursery trade, and even if Siberian Dogwood (Cornus Alba) seems to be flavor of the month lately, this is one case where even gardeners in its native land are falling head over heels for our friend.  Heck, there are even golden and green cultivars/selections out there!  Apparently you can plant all three as far south as the lowland Carolinas and parts of Georgia and Alabama, but I would imagine that like any northern plant, they probably do best in wet conditions with colder winters back home; they certainly do not naturally occur much farther south than the Great Lakes, at least at lower elevations. 

I do not know how the early colonists would have seen this plant and have yet to run into early botanical and garden literature regarding it, but the First Born absolutely loved it and used it in everything from smoking mixes to wound treatment.  Redtwig would make an excellent candidate for serious ethnobotanical study, and if this blog did not have a more general focus beyond ethnobotany (I know, I know, sometimes I get carried away with it) I would probably bore you all with a good solid set of posts on findings about good old red bark shrub. 

Oh, and this is just our friend in the winter.  In the spring it bears white flowers, in the summer these turn into white berries,and they all look great on those ribbed leaves.

Again as with our friend Sorbus, this apparently also occurs in northern Illinois, classic eastern Tallgrass Prairie country, a far cry from anything Boreal.  If anyone reading this knows more, by all means, share! 

Note: Cornus Sericea has also been known as Cornus Stolonifera.