By Chris White, ISA Certified Arborist

The most common question I get on a site visit isn’t about disease or pruning. It’s asked quietly, a little embarrassed: “What kind of tree is this, anyway?”

Tree identification is a skill, not general knowledge, and nobody teaches it anymore. But it’s one of the most useful things you can learn about your property. You can’t choose a replacement without knowing what’s already growing well in your soil and light.

Start with the leaves — the fastest key.

First: simple or compound? A simple leaf is one leaf on one stem. A compound leaf is a stem with multiple leaflets — it looks like several leaves, but the whole thing is one leaf, and the bud at its base marks where it starts. Ashes, walnuts, hickories, and locusts are compound. Oaks, maples, dogwoods, and most others around here are simple.

Second: opposite or alternate? Opposite leaves attach in pairs, across from each other; alternate attach one at a time, staggered. Only a handful of common Upstate trees are opposite: maples, ashes, and dogwoods. Everything else is alternate — that one distinction eliminates half the possibilities.

This is the one I teach first, because it pays off immediately. My sister Dana identified four trees in her front yard in ten minutes. Three she got right. The fourth — picked up off the grass, five points, star-shaped, obviously a maple — was a sweetgum. What tells them apart is a fact about the branch, and a leaf in the grass has already lost its branch.

She brings it up every time I see her. Not because it made her a botanist — because it was the first time a tree stopped being background scenery.

Now the shape of the leaf. Hold your hand up, fingers spread. That’s an oak or a maple — the edge cuts deep in and back out, leaving sections with bays between them. Those sections are called lobes. It’s the only bit of vocabulary you have to keep, and your hand is the picture of it.

Now make a fist. That’s a dogwood or a magnolia — one smooth outline, no bays. Fingers or fist: that question alone splits every leaf in the yard into two piles.

If it’s fingers, run a fingertip around the edge. If every point ends in a tiny stiff hair catching on your skin, you’re in the red oak group — red oak, pin oak, Shumard. Rounded smooth points: white oak group. That’s the whole test, and you can do it with your eyes shut.

When the leaves are gone, read bark and form — starting with ordinary bark, because almost all of it is ordinary. Put your hand on the biggest tree you own: most likely gray-brown, split into vertical ridges with furrows between them. That is the default — oaks, hickories, ashes, most mature hardwoods do some version of it. Bark alone won’t name it, and you haven’t failed at anything.

The useful question is whether the bark is doing something other than ridges and furrows. A handful around here do, and each can be named from fifty feet. Shagbark hickory shags in long curling plates. River birch peels in cinnamon strips. Sycamore patches off to show cream and olive-green underneath — lit from inside. Dogwood breaks into small squares like alligator hide. Tulip poplar runs interlaced gray ridges up an unusually straight trunk. Black cherry goes dark and platy, and smells faintly of cherry cough syrup when scratched.

Scratch the bark — thumbnail, small spot, low on the trunk — and sniff. About half the people I ask hesitate, as though the tree will mind. It will not mind. That tree has survived an ice storm, a lawnmower, and whatever the previous owner did in 1994. You’ll know a black cherry for the rest of your life.

If you learn nothing else, learn these five. White oak: rounded lobes, no bristle tips, massive spreading crown — the benchmark wildlife tree. If you have one, protect it like it costs money. Tulip poplar: four-lobed leaf, the straightest trunk in the eastern forest. Red maple: opposite leaves, red along the stem, first to flower in late winter, the most common tree in the average Upstate yard. Eastern red cedar: the only native conifer here that isn’t a pine, berries eaten by over 50 bird species. Sweetgum: star-shaped leaf, spiky seed balls, the strongest field mark in tree identification.

When you still don’t know, use iNaturalist — photograph the leaf, the bark, and the overall form, and within minutes you’ll have a community-verified ID. It’s free, and I use it myself. Last April I let it name a viburnum on a job in Walhalla. That is not cheating. That is what the tool is for.

Knowing what you’re looking at is not the endpoint. It’s the start. Once you know the species, you know the expected form, lifespan, and pests. You know what it’s supposed to look like, and you can tell when it doesn’t.

That’s the skill. Not the name. The ability to notice when something’s off.

Chris White reads trees for a living — what they are doing, what they are about to do, and what it costs when nobody notices in time. An ISA Certified Arborist and native plant specialist, he consults independently across Oconee, Pickens, Anderson, and Greenville counties.

His work sits where horticulture meets liability: pruning cuts that help instead of hurt, hazard evaluation before the storm rather than after it, and native plants matched to the real soil, slope, and light of the Southern Appalachian foothills — not to a catalog.

He holds an MS in Horticulture, writes for national and regional publications, and is the author of The Arborist’s Walk (2026). He speaks to garden clubs, HOA boards, master gardener programs, and professional audiences across upstate South Carolina and nationally.