This oak tree and us

A large oak tree grows in Pony Hollow, the area of the nature preserve that is as Old Growth as it gets here on The Quarry Farm. Pony Hollow is so named because, once upon a time, two ponies named Cookie and Babe pastured here. They seemed to prefer its steep slopes above Cranberry Run and the shelter provided by two established Black Walnuts and that one significant oak.

Last spring I walked the property with Dan Bartlett, a forester with the Ohio Department of Natural Resources and Kevin Edinger, District Conservationist with USDA/NRCS Ohio. Dan was excited to spot a young Chinquapin Oak growing in the upland woods at the intersection of the Wetland Forest and Upland trails. I led the two visitors down into the Hollow to show him the large oak. He told me that the tree is one variety of White Oak—a Chinquapin. As we followed the trails, we spotted more young oaks, all the same species, likely the progeny of the great oak that resides in the Hollow.

When we think of Ohio’s remaining native keystone species, if we do, what comes to mind are big mammals like White-tailed Deer and flashy birds like the Bald Eagle. Those are 2 that are always shouted out when we ask students for examples. But never has there been a shout for plants. And if you’re going to shout, oak trees are a keystone species that deserves significant shouting.

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According to research touted by the USDA and U.S. Forest Service, oaks provide numerous ecosystem services that support human well-being: providing shelter, regulating the environment, and enhancing culture and aesthetics. And without a food chain leading up to humans, our well-being would be moot. Oaks play a significant part in that ladder. In a single region, up to 2,300 species—including birds, insects, fungi, lichens, and mammals—are associated with oaks. Doug Tallamy, a leading entymologist and conservationist, states that oaks sustain a complex, year-round web of life, creating habitat and resources for countless species, from caterpillars right on up the food chain. They store significant amounts of carbon, helping mitigate climate change.

Oak trees appeared on this planet about 65 million years ago. Unlike other forms of life they have not gone extinct because their seeds are encased in a hard shell. These seeds and oak leaves are coated with tannic acid, which prevents fungi and insects from harming them. Oak trees can continue to grow and produce acorns for 700 years. One tree can produce about 10 million acorns during its lifetime, even though they don’t begin to produce these seeds until they are at least 50 years old.
Yet oaks are in decline due to the combined stress of climate change, drought, and pests and pathogens. Tallamy writes, “We cannot casually accept the loss of oaks without also accepting the loss of thousands of other plants and animals that depend on them.”

Despite significant deforestation and drainage efforts, white oaks are our best hope for survival in Northwest Ohio. They are ecologically adaptable, historically dominant, and well-suited to the region’s soils and climate. They just need our help. It takes many arms to hug the Mama Oak in Pony Hollow. Even though she and other Chinquapin oaks seem to be standing strong on The Quarry Farm, the Gardener allowed a chinquapin oal seedling to grow in the pollinator garden, deciding it’s ultimately more valuable than the flowers. We planted a little Chinquapin on the farm animal sanctuary this fall. It is surrounded by goat fencing. I stroke its leaves and pray for it to survive because we all need it to.

Carl Sagan, American astronomer and planetary scientist, offered a really good reason for that need, I think. “This oak tree and me, we’re made of the same stuff.”

Habitats on The Quarry Farm: The Prairie

The space that is our developing prairie habitat used to be called simply “the back field.” A trail heading downhill from Red Fox Cabin, across Cranberry Run, around the quarry, up a hill, and through the woods leads to eleven acres that were tilled until 1985. The tractor path to the field skirted Cranberry Run for a stretch, where it narrowed to inaccessibility due to erosion. Farming the field had to be abandoned. A new direction for The Quarry Farm took shape: to establish a nature preserve with several distinct habitats, including a prairie in the back field.

As seeds and rootstock in the soil sprang up and spread, the field began to look a bit like a grassy prairie. There were some food sources and cover for rabbits and small animals like field mice and voles. They in turn fed predators like great horned owls, red-tailed hawks, and foxes. Seed-eating and insect-loving birds could feed and nest. In early spring, a visitor might be lucky enough to witness a mating American woodcock rise explosively into the dusk.

That early resemblance to a prairie was deceiving though. Too much of the vegetation was non-native (teasel, for example), offering too little support for native birds, insects, and small animals. In no time, the field began to fill up with honey locust, hawthorn, and black walnut seedlings (native, but unwelcome outside the adjacent woods). Multiflora rose and Asian bush honeysuckle invaded. Clearly, if The Quarry Farm was to have the prairie habitat we envisioned, management would be necessary.

Recent years have been a learning process. We’ve tried to find the most efficient, least harmful ways to squelch invasives and non-natives so that we can eventually claim a true prairie habitat with a balanced ecosystem. Consultants have shared their expertise. Wonderful volunteers and skilled hirees have hacked, dug, and bulldozed trees; cleared ground and spread seeds of native prairie plants; and mowed spent growth to encourage the spread of native grasses and wildflowers. The search for best management practices goes on.

We know the work of developing and maintaining a distinct prairie habitat may never be done, but we’ll have the joy of providing the creatures that find a home there the best chance to thrive. And we can share it with visitors like you.

Annuals That Pollinators Love

Conservation biologist Douglas Tallamy [Nature’s Best Hope, 2019] urges us to use our gardens to help fight looming threats to life on Planet Earth, two being shrinking agricultural land and loss of habitat for our vital pollinators. How can we use our little plots to impact such huge issues while also beautifying our landscapes? Dr. Tallamy assures us that our combined efforts can go a long way toward correcting both problems. So, this winter as we pore over gardening catalogs, we who have enlisted in the cause of supporting pollinators should pay extra attention to seed and plant descriptions, looking for evidence of plentiful pollen and nectar supplies for bees, butterflies, hummingbirds, etc.

One small way to focus is by looking for colorful, pollinator-friendly annuals to incorporate among the perennials, herbs, vegetables, native wildflowers, etc., in our garden plans. Annuals that are both ornamental and beneficial include easy-to-grow cosmos, marigolds, sunflowers, coreopsis, salvias, and zinnias. Some can be obtained as nursery starts, while all can be seeded directly into the soil. With proper care, especially deadheading, they can provide color and pollinator food for a season. Their flattish, daisy-like flower heads make rich pollen and nectar supplies easily accessible to bees (the most important pollinators), butterflies such as Monarchs and Swallowtails, and certain flies. [On zinnias, for example, pollen and nectar sources make up a yellow center, easy for pollinators to spot, except perhaps for showy fully double varieties that tend to bury the food supply.]

Plant breeders tempt us every year with exotic cultivars and hybrids of familiar annuals. These promise color and interest, but many fail to feed pollinators. The features that supply rich pollen and nectar may have been weakened or bred out. For example, pollen-free sunflowers touted for cut flower arrangements may be colorful but are useless to pollinators. Cultivars bred from flowers that are normally flat and daisy-like instead may have dense pom-poms that look quirky and cute but make pollen and nectar too difficult for bees and butterflies to reach. Unless a new variety promises great benefits, tried and true standards may be the best bets for pollinators.

A four-year research project by University of Minnesota Extension (2015-2018) studied more than 30 annual varieties and identified the following nine as the most popular with pollinators… (click on the newsletter cover for the full article)