Winter Seeding

Our first snowstorm was brewing on top of an inch that had fallen two days prior. Although there was much to do, I paused to get out to the back swale, once wet, now dry, to scatter the seeds I had collected.

The roughly two acre swale, either artificially created by gravel mining just over the property line or an artifact of the terminal moraine on its northern flank, used to dry up each summer, enough so that tree species accustomed to periods of water logged soil could still grow to sixty or seventy feet tall. These trees have now died, the largest within the last three years, because of permanent inundation.

This year, another change had taken place -the swale dried down. The spring tree which drains the area continues to flow and a walk through the swale could still leave you suctioned to its wet bottom, but the hummocky surface is dry, the duckweed a gray mat. With that had come an incredible explosion of canary reed grass, the cool season, hybrid grass created for just this type of environment. In two short months the grass multiplied its square footage by ten and left little room for intervention by this woods gardener.

Canary reed grass or reed canary grass, Phalaris arundinacea, is terribly hard to remove -more so than garlic mustard, buckthorn, and creeping charlie combined -for its wet soil, its nearly impenetrable mat of fibrous roots, its rhizomes and seeds. Although developed for haying wet ground, wild animals do not care for it. Yet here, it is clipped, but I cannot recall whether I clipped it in preparation for some type of management or it has been grazed by deer this late autumn. If it was deer, that would be unusual.

I will not be able to remove the reed grass, nor do I intend to spray glyphosate on it. I've tried plastic tarps, but there are now too many woody obstructions over a region much too large for that. My plan is to seed this open area, ahead of the advancing grass, in hopes of some species gaining a foothold. Only if the pond does return, to its last maximum, will the open water push the mat of grass back to its edges.

If the pond does not return, this wet meadow may have a limited number of species capable of growing alongside canary reed grass. I've seeded blue vervain, Verbena hastata, common milkweed, Asclepias syriaca, swamp milkweed, Asclepias incarnata, various asters and goldenrod, and a bit of big blustem. I had two dozen blue lobelia, Lobelia siphilitica, starts remaining from the late summer planting, roots still alive, that I dropped in the hummocks under the snow. And in late September I planted dozens of Spotted Joe Pye, Eutrochium maculatum, more blue lobelia, and several other species I cannot recall at the moment along the more shaded swale edges where the canary reed grass had yet to overtake.

Adaptation

The Wekiva (Weh-kee-vah or wah) Spring Run flows onto the Wekiva River which descends from the Florida central highlands into the middle sub-basin of Florida's longest river -the St. Johns. To the canoe or kayak paddler the riverside can appear strange with its palms, bromeliads, and trees bearded by epiphytic Spanish Moss as much as boats captained by duck dynasty types.

Among these, however, are familiar plants and animals of the north -water birds, trees and forbs like red maple Acer rubrum, pickerelweed Pontederia cordata, heron, egret, and white ibis (above).

The red maple, its trunk visible on the far left of this photo, is likely one of the most adaptable tree species in North American native silviculture. I am familiar with it from road travel throughout New England and the Mid-Atlantic where it can often be seen in lakeside swamps turning red before autumn gains a foothold. Cultivated forms are also common to streets and yards. Although I have not seen it among our wetland edges or woodland swamps, it certainly grows here and farther north in Minnesota. It is both water tolerant and drought tolerant, shade tolerant and sun tolerant and quite obviously, heat and cold tolerant. A red maple grown in the south may not do well in the north as well as the reverse, but the tree exhibits great genetic variability and adaptability.

Given that our once vernal swamp has become, for the last three years at least, a year-round swamp due to frequent heavy rainfall events, geomorphic characteristics and a rising water table, nearly all of the vegetation has died. The last of the very large trees, namely green ash Fraxinus pennsylvanica and basswood Tilia americana, that tolerate a few months of standing water every year, have finally succumbed to three years of permanent inundation.

The adaptability of a tree like red maple struck me as a good fit for such a situation -able to tolerate the standing water or, should things change, do fine in simply wet soil or even withstand a drought. Research shows that the native tree has increased its population since the time Europeans arrived to the continent, and in some cases may be viewed as an opportunistic, invasive species. This is something I will need to weigh against the other invasive, exotic species that have taken advantage of the sunlight provided by the sudden death of the slough's canopy.

A struggle I've had over the last two years since I have moved to our place in the Minnesota woods is how to preserve and restore the woodlands and wetlands around us. It is disheartening to see government maps describe parts of our woods and wetlands as of "moderate" quality or "altered non-native plant community: no native species present" which are both misleading descriptors. However, after two years' time I believe I understand the extent to which this place has been altered by human interaction and all the species that have followed it.

In acceptance of these changes, why not be proactive? Why not plant species that can take advantage of the new conditions? Why not plant pickerelweed and red maple in the flooded slew even if they are not currently growing on site? The wish to return such a drastically altered site to a pre-human condition is not only foolish, but nearly impossible. What I am likely to consider, now, is gardening the woods and swamp with native plants, without the restrictive edicts of restoration.

Lizard's tail Saururus cernuus was identified on one Florida boardwalk trail. Is it beyond its cold tolerance in our slough? We are likely on the edge of its range, but I'm game for a try.

Any time spent in Florida with plants leads you to think about "houseplants," those typically subtropical and tropical plants we attempt to grow indoors. Seemannia sylvatica, above, may be hard to find locally, but it promises to be a great winter friend in a west facing window.

In a surprise turn, our limited collection of easy care houseplants has increased dramatically despite the winter's desiccating indoor humidity level. Beyond the easy pothos, sprengeri fern, and oxalis we are now overwintering a substantially larger rosemary shrub (2nd year), lavender, two opuntia spp (2nd year), two agave spp (2nd year), a rather large pineapple sage Salvia elegans (which blooms so late here that this may be only way to get it to flower before frost), dusty miller Senecio cineraria (last year it overwintered outside), and the odd petunia.

Now, for the peculiar case of the petunia. At some time, maybe it was August, I noticed a petunia flower underneath our terribly diseased tomato plants (a terrible year for them). We had no petunias at the house this year or last and certainly had none in the vegetable garden. I gave a pass to the notion that it self-seeded from petunias that may have been located in the long window box along the garage in years before our arrival. After all, I find tomato plants sprouting all over the gardens despite occasional -15 or -20 F nights over winter. After a few weeks I decided to dig it up and move it to a more visible location in the raised herb bed, near the parsley, where it continued to flower until the first frost sometime in November. There it lay for another couple of weeks, its pink blooms preserved by the cold. When the first deep freeze was about to set upon us we cut back the herbs for use in the kitchen but left some of the parsley under cover to keep fresh for another few days. On that last day of natural viability, when all over-wintering plants were required to come in, I realized that the petunia was still green, pliable, quite alive. I dug it up, potted it, and it is now doing well on our window sill with a mass of new leaves.

Woodland Orange

For three days I've been spotting an unusual orange deep into the middle slough woods, but it was early, rainy, and the mosquitos had finally blossomed. On the fourth day I traveled down the Alwin trail looking to take some photos and confirmed what I tried to dismiss -Laetiporous sulphureus.

Not only is this appearance unusually early, it is also in an unlikely location. The log has been down for years, is partially decomposed, covered in moss, and completely surrounded by water. Because I didn't act quickly, the mushroom received a couple of rain soakings, but it was completely bug free -a benefit of its island location?

Our two woodland sloughs have been steadily filling with more and more water, often independent of rainfall. It is an unusual occurrence that we feel may be connected to the partial filling of the gravel pit adjacent to the west side of the property. Rex was concerned that this change would raise the water table, and his concern appears to have been legitimate. In the back slough, nearly every tree has died -there is one old, large ash surviving the inundation. All the shrubs that were green in prior years are grey. The trail that was always accessible along the western edge is now completely submerged and invisible so that a new path will need to be cut much closer to the property line.

We do not want the trees in the middle slough to die off from inundation or fall in a storm because of soggy soil. The increased sunlight will advance an army of buckthorn well positioned on the south slope and already making headway in the middle slough. If it does not begin to drain we are likely to dig a drainage, or rather enhance the drainage that already exists. Any action of this magnitude will have consequences, but we cannot consider our woodlands as anything but altered or unalterable -it is a place completely transformed.