Everyone has heard the old term “once in a blue Moon”, which is used to reference a rare event. The origin of the term comes from the fact that when a month has two full moons in it, the second one is called blue. This will occur this month appropriately on October 31, Halloween, so be sure and watch for it. This second full moon blue thing is not old folklore. A March 1999 issue of Sky and Telescope describes the term as recent occurrence.

Seeing the hills and valleys ablaze with color is a special Autumn event. Many variables influence how bright the colors will be, such as sunlight, temperature, rainfall, and soil conditions. These will cause color variations in a given tree from one year to the next or even differences in various portions of the same tree.

White-tailed deer are widespread in our area and can be often seen along wooded edges or making a mad dash across the road. Even if you don’t see them, there are signs to look for when hiking in the woods that show their presence.

The late summer/early fall season puts on a good flower show in our area, especially asters, those daisy-and sunflower-like species that come in a variety of colors, yellow in particular. One species that is not only pretty to look at but can also be enjoyed as a seldom-used vegetable is Jerusalem artichoke (Helianthus tuberosus).

When most folks consider a wildflower season, spring is usually what comes to mind, and rightfully so based on the sheer number of species that bloom then. But autumn also offers an impressive burst of color when some wildflowers make one last push to propagate before the killing frosts. Asters are particularly easy to find blooming now, especially yellow ones.

By Steve Roark
Volunteer Interpreter, Cumberland Gap National Historical Park

On October First be sure to look to the east at sunset and behold the most famous of all full moons, the Harvest Moon. Its nostalgia goes back to the days before electricity, when it was used as a night light by farmers to work longer in the fields to get the fall crops in, hence the name. But the Harvest Moon stands out for other reasons as well.

There are times I feel sad that I did not get to see things that are long gone. The American chestnut tree was once the dominant tree in our forest but is now reduced to scattered surviving stump sprouts. The passenger pigeon (Ectopistes migratorius) was once considered the most abundant bird on the planet, with flocks that could darken the sky for days as they migrated. This bird is now only a stuffed animal in the Smithsonian museum.

Folks who would like a taste of some wild food ought to get out and hunt persimmons here soon when they get ripe. They are abundant in our area and easy to find in fencerows and woodland edges.

There are many varieties of persimmon trees in tropical areas of the world, but only two in the United States. The one growing here is called "common persimmon" (Diospyros Virginiana), or "possum tree" by some.

By Steve Roark
Volunteer Interpreter, Cumberland Gap National Historical Park.
Confession time: I am not good at math. I use it, it’s great, we went to the moon with it, yada yada.
I don’t think well mathematically and must strive to understand it. But I was amazed to discover that trees use mathematics to arrange their leaves on a twig to optimize their collection of sunlight for the photosynthesis thing.
Leonardo da Vinci picked up on this long ago. The “impress your friends” word of the day is phyllotaxis: the arrangement of leaves on a stem in relation to each other.

When I ask kids why trees are important their number one answer is that they produce oxygen. Plant leaves are solar collectors that take sun energy to produce food through the miracle of photosynthesis, a complex chemical process where carbon dioxide and water are converted to a glucose sugar. This sugar is used for food energy or converted to a starch called cellulose for building the plant’s body (stem, limbs, etc.). In trees we call this wood, something we use a lot of.