An Exhibit of Nature's Etchings

(Preface: 2018 was a special winter in our backyard, due to the remarkable patterns and rich colors that appeared in our "fillable, spillable" minipond.) 

Our backyard artist in residence program has been going very well this winter. The artist, content to remain outdoors without lodging, has been working long hours, often overnight and in freezing temperatures, using nothing more than rainwater and a few leaves to achieve remarkable effects.

I did my best to capture the work, and give it adequate framing.

Asked how she achieved her unusual effects, and if these etchings, so different from her past works, represented a new direction in her art, she shrugged and said nothing,

then showed me a composition with etchings superimposed on what appeared to be a large bubble.

Some were more subtle than others, relying on rich undertones.

Wondering if the etching style was unique to the fillable-spillable miniponds that catch rainwater from the roof, I went to the other miniponds in the yard, created years back by digging down into dense clay. Here there were etchings as well, in a multimedia context using leaves.

Impressed, I suggested we host an exhibition, but there was no time to plan, or send out invitations. Nature, ever the restless artist, had already moved on, with rain and then snow in the forecast for overnight.

Water: Our Backyard Artist in Residence

Even in the winter, or maybe especially in the winter, there's a lot of creativity and beauty in our backyard, thanks to a fillable-spillable 35 gallon black tub that catches runoff from the roof. If the night dips below freezing, the open water becomes a canvas for elaborate 3-dimensional designs.

Why the water doesn't freeze flat is hard to fathom. Sometimes, if the night's freeze has been light, these geometric shapes will frame miniature pools of open water that jiggle when the tub is tapped.

Cold brings out an unexpected beauty in water, and sometimes in ourselves, if we have clothes to match the weather, and take the cold as a bracing stimulant rather than, as Garrison Keillor would say, "nature's attempt to kill us."

These images were first posted at VeblenHouse.org as News Flash: Nature is a Geometer, in a post that links to an Exploratorium exhibit that shows how supercooled water can freeze over in a flash.

Liquid Winters and Time-Bending Blooms

Long time local botanist Betty Horn sent me an email some days back--February 10, to be exact--reporting that she had just found a hepatica blooming in Herrontown Woods. Hepaticas in early February? This was news. 

Without asking, I knew nearly exactly where she had found it. If you're a field botanist, you maintain a mental map of where you've found certain special plants growing, and in Princeton, my mental map has exactly one location for hepaticas, along the ridge in Herrontown Woods. Sure enough, she had found it there, given a head start by the warmth of a nearby boulder and the snowless winter. 

Hearing the news, another botanist friend, Fairfax Hutter, checked out some hepaticas she knows of in Hopewell. No flowers, nor any buds, she reported. Betty looked back at her records and told me that "the usual time for hepaticas to bloom is early to mid March, and sometimes as late as the first week in April." 

Another early flower is snowdrops--a nonnative spring bulb that decorates the grounds around Veblen House. The first bloom I noticed this year, for the record, was on Feb. 6.

Before moving to Princeton in 2003, I lived in Durham, NC for 8 years. Winters there were much like the one we've had here in New Jersey this year. The default was no snow, and if a snowstorm did come, it became a spontaneous holiday, with schools shut down for several days. It could be said that New Jersey is the new North Carolina, with Georgia in hot pursuit, so to speak. 

The shift towards a liquid winter has made for dramatic changes in our "fillable-spillable" minipond in the backyard. It's a 35 gallon tub that captures runoff from the roof, originally conceived as a pond that could be easily emptied when our pet ducks had made it muddy. 

Like an artist who has lost inspiration, it hasn't produced very interesting ice patterns the past few winters, nothing like that stretch from 2018-19, when intermittent freezes and thaws caused it to behave like a canvas for the profound artistry of nature. Each freeze would bring new and endlessly varied patterns in the ice. 

Carnegie Hall, Carnegie Lake, Carnegie Minipond?

New York has some pretty impressive temples to the arts, this one being Carnegie Hall. These structures reach for the sky, but remain enveloped within nature's eternal Play of the Elements, with performances ranging from symphonic sunsets and cloud patterns to the crystalline miniatures of snowflakes. Light sets the mood, with water as the endlessly creative molecule so at ease in earth's temperature range, shifting effortlessly from gas to liquid to the solid state where it can really show off its range of expression. As long as there's cold weather, a breeze, or a sunset to reflect, water will offer performances at Princeton's Carnegie Lake, as well as smaller venues across NJ.

Easiest for us to access are the rainwater-fed "Carnegie Miniponds" in our backyard, which have been offering an ongoing series of exhibits.

The day after the backyard "etching" photos were taken (previous post), the fillable-spillable minipond had gained a pock-marked appearance, thus far as inexplicable in origin as the etchings.

another had these rich designs.

How does some water sitting in a tub overnight develop such a variety of shapes?

Another slight thaw and overnight freeze brought back more patterns 

like those from two days prior, 

etched by a most mysterious hand.

Thus far, no patterns repetitive enough to call "Philip's Glass".

A Duck Gets a Taste of Spring

Our Pekin duck has been finding more reason to venture out of the coop this week. There's mud to probe with its beak, and the luxury of a bath in one of our backyard ponds swelled by snowmelt from neighbors' yards. She had no problem breaking through the thin layer of ice left by last night's freeze.

Earlier in the month, finding water in its liquid state was more of a challenge, as she took sips from the fillable-spillable minipond catching water from the roof.

She keeps a sharp eye out for hawks, turning her head to get a better look at the sky. Usually, that turn of the head means something's flying over, be it a vulture, crow, hawk, or a jet headed into Newark Airport.

Meanwhile, the duck's companion, a chicken of similar feather, was laying another robin's-egg-blue egg. We often get two a day now, as warmer temperatures and longer days have broken the winter drought.

Ducks and chickens made multiple appearances in movies this weekend at the Princeton Environmental Film Festival, particularly in the excellent documentary on permaculture, "Inhabit". The ducks were said to be excellent at keeping the slug population down on an outdoor shitake mushroom farm, and the chickens happily batted cleanup in one of the crop rotations, eating any seeds that eluded harvest.

When Snow Snazzed Up the Morning

Winter's second snow caught us by surprise. I had just put the shovels away, but they were hardly needed, as this snowstorm snazzed up the landscape without snarling traffic, beautifying the morning before fading away in the afternoon sun. The snow added definition to the landscape, revealing the outline of the ephemeral stream that flows from the neighbor's yard down into ours.

making clear the boundaries between aqueous and terrestrial.

Even in a freeze, the chickens can still find water where our tiny stream, a thin blue line on old maps of Princeton, trickles past the sedges.

The fillable, spillable ponds, fed by snowmelt from the roof, received a cheery rim of snow,

and an idea for leaf corral as scroll-shaped sculpture sprang from a shape unseen until the snow gave it a defining presence.

The snow made this fence into an optical illusion (doesn't it look like the photo isn't quite rectangular?),

and even turned unsplit wood into an artful assemblage. If all unfinished work received such ornament, what a beautiful world it would be.

More of Nature's Art in a Backyard Minipond

The highly gifted fillable-spillable backyard minipond that receives water from the roof created more art a couple nights back. I did the best I could to give it suitable framing.

This scale-like pattern seems to be an innovation, with morning sun tinging portions with gold. The scale pattern can be seen as a miniature version of the backward "L"'s in the image above.

The artist-in-residence is content with its humble dwelling, needing nothing more than an occasional rain to keep it full.

Those flat spaces between the crystalline lines are open water, and the whole pattern could be rotated in the bowl without breaking it.

Sunlight and rotation of the photo made for a jazzy effect.

Leaves collecting in the tub hint at collage or mixed media, and may add a subtle tinting to the water over time.

An hour later, the crystals had melted away, leaving open water. Thanks goes to Leo, our dog, for getting me out in the backyard first thing in the morning.

A Thousand-Eyed Grackle

With the temperature reaching 74 on February 25, I looked out our back picture window to see that our usually peaceful backyard had come alive with motion. The lawn was astir with the hyper black-winged commotion of hundreds of grackles. Their iridescent necks flashed blues, greens and purples as each probed the ground for food, with not a second to lose. Five or six stalked about on the edge of the fillable-spillable minipond, angling for a sip of water. I grabbed a camera and crept towards the window, eager to document their spectacular numbers and energy. But even my barely perceptible movements were caught by one of a thousand eyes, and off they went in a flash, a winged unison where a moment before each had been absorbed in its own pursuit of food and water. They crowded the high branches of a nearby pin oak while somehow collectively plotting their next move. Had I seen 500 birds? Or had it been one bird with 500 mouths and 1000 wings?

"Open Raingarden" Event Tomorrow

It's like an open house, except outside the house. The raingardens here at our urban oasis (by "urban" I mean a busy street in Princeton) are in full bloom, and I'd like people to have a chance to see them. Come by this Sunday, Aug. 17, 3-5pm. I know it's short notice, so email me if you'd like to stop by some other time. The address is 139 N. Harrison St in Princeton. Best to park on Ewing Street or Franklin Ave. if driving. Much of our backyard is fed by runoff from uphill neighbors, which feeds gardens full of native wildflowers, sedges and rushes.

Of the two raingardens in the front yard, one catches water from the neighbor's driveway. The other receives water from one of the front downspouts. The backyard is a reconstructed streambed--what once was a small tributary of Harry's Brook, visible on old maps--with a series of miniponds enveloped in all the native plant growth evidenced in the photo. The ponds vary from full to empty, depending on the rains.

You may also encounter a few charismatic chickens and ducks, and a "fillable/spillable" rainwater duck pond (patent pending). Included is a small "yard" sale, consisting of native wildflowers from the yard that have been potted up. Nearly all are local genotypes. 

And please bring any empty plastic flower pots you don't need. There are native volunteer plants sprouting out all over, and I've run out of pots.

Ducks Visit the Backyard

A pair of mallards visited our backyard this morning. The male stood in the middle of the lawn while the female strolled down the garden path, presumably in search of a nice pond to call their own. Were they checking out nesting options? If so, I can't imagine they were pleased. The only standing water is the fillable-spillable tub that catches water from the downspout.

The most appealing interpretation of their surprise visit is that one of them might have been born here five years ago, back when through the luck of the draw we ended upt with a pair of mallards among our fine feathered pets in the backyard. Being a male and female, they soon had five ducklings to call their own. As the ducklings grew, the yard seemed to shrink, overfilled as it now was with ducks and chickens. There were times when we'd hear the nasal call of geese flying overhead, or one or another duck would fly in an impressive arc around the boundaries of the yard, and I'd think for sure they would respond to the call of the wild and venture off into the big world beyond our fenceline. But they never did.

The mallard family eventually ended up at a farm outside of town, whose owners were kind enough to take them off our hands. I read that mallards live 5-10 years in the wild. How lovely to think that they might have come back to have a look around at their old haunts.

For some posts about the ducks we had behind our house on busy Harrison Street, type the word "mallard" into the search box for this blog, or follow this link.

Graupel--A Special Form of Snow

All snow is special. Like children, except more numerous and lower maintenance, no two snowflakes are the same. As we know, snow that falls in Princeton's coveted 08540 zip code is extra special, and on the last day of January, there fell a particularly special kind of Principitation. Instead of flakes, the snow looked more like small beads of styrofoam.

When it fell one day two years ago, thinking it needed a name, I coined what seemed like a new term: snubbins. A recent google search, however, revealed that the word "snubbins" is sometimes used to refer to medium sized breasts. Who knew?

A less conflicted name came out of the blue during a trip to the Whole Earth Center, when longtime employee Bill excitedly showed me a printout from Wikipedia, describing this special snow as "graupel". To quote: "Graupel, also called soft hail or snow pellets, is precipitation that forms when supercooled droplets of water are collected and freeze on falling snowflakes, forming 2–5 mm balls of rime." These supercooled droplets, suspended high in the air and still liquid down to -40 F, collect and freeze around the snowflakes as they fall towards earth. The behavior of supercooled water came up in another recent post admiring the patterns the minipond water makes when it freezes.

In this photo of the graupel collected on our backyard fillable/spillable minipond, or mini-rink this time of year, you can see their shape. In the middle of the photo there's a snowflake still visible, only partly covered in rime.

In this photo, some of the graupel takes the shape of corn kernels.

Favorites from the archive:

Principitation: Coins and defines useful terms for various kinds of snow and snowy objects, e.g. snirt, snoodle, kerfluffle, and we-cicles (plural of i-cycles).

Snowbound Language: A Victor Borgesque story about what happens when snow blankets the english language.

A Flood-Ready Garden

This morning, Sustainable Princeton will host another in its excellent series of Great Ideas Breakfasts at the Princeton Public Library. This month's program is about water that comes through Princeton in all its forms: precipitation, runoff, drinking water, wastewater. I'll be leading one of the discussion groups, on the concept of resilient landscapes. Below are some photos of the stream that flows through my backyard during heavy, extended rains, and how I've harnessed that water to drive a productive and diverse habitat of native floodplain wildflowers, sedges, and (my daughter's contribution) ducks.

The water cometh from uphill.

In its path lies this normally tranquil scene, with a series of miniponds, a constructed stream channel, native sedges, rushes, and wildflowers building towards summer blooms, and a chicken.

After heavy rain falls steadily for a day or so, upstream soils become saturated and begin to shed any additional rainfall. The water begins to flow in from uphill neighbors' yards, bringing this ephemeral stream to life. When the rains stop, the plants will emerge unharmed and replenished, and a little of the runoff will have been held back, slowed down, by the series of check dams and miniponds.

Now looking towards the back of the property, a quiet "before" scene: our path to a little town park bordering our yard.

And a "during" scene, as rainwater runoff flows from the park into our yard, and gets redirected by a berm so that it will feed our ponds and then flow safely between two houses just down the slope from us.

Being ready to accommodate a flood also better prepares a yard for droughts. Slowing the water down allows an underground reservoir of moisture to form, sustaining trees and wildflowers through the dry times.

A "fillable, spillable" pond prototype--something of a mockup intended to give the ducks a place to swim during droughts. And, when the ducks have mucked it up the way ducks do, or when the mosquito wigglers appear, it can be easily tipped to spill and refill with clean water. Need to build a rock wall ramp on either side to provide ornament and also a means for the ducks to waddle up into the water.

The ducks love the heavy rains.

The chickens? Not so much.