Check these locations before anything else. If poison ivy is on the property, it is almost always in one of them:

1. Stone walls. Wall bases hold warmth and moisture, and roots run their full length.
2. The lawn-to-woods seam. The transition line where mowing stops is where seedlings establish first.
3. Fence lines. Posts and rails are climbing structure, and vines travel the line.
4. Tree bases. A thick, hairy vine going up a trunk is mature poison ivy.
5. Bed and driveway edges. Anywhere the mower can't reach but sunlight lands.
6. Trail and path margins. Unmanaged edges reseed constantly.

Leaflets of three, always. The middle leaflet sits on a longer stalk than the two side leaflets, which is the most reliable tell. Edges vary: some plants are smooth-edged, some notched, on the same property. Surface varies too, glossy or matte. New growth in spring is often reddish; summer is green; fall turns a deep crimson that makes September the easiest month to spot it from a distance.

Poison ivy shows up in three forms on the same property, sometimes from the same root system.

Ground cover. Low runners spreading along beds, lawn edges, and woodland transitions. Often the form children and pets contact first.

Shrub. Upright woody stems, knee-to-waist height, common along stone walls and fence lines.

Climbing vine. Mature poison ivy climbs as a vine covered in fine aerial rootlets — the classic hairy rope on a tree trunk, wall, or fence. The hair is the identifier. These vines can be decades old and carry urushiol on bark, roots, and stems. Leafless poison ivy is harder to identify, not safer.

Spring. New leaves emerge reddish or bronze, soft-looking, and small — easy to mistake for harmless seedlings. Already fully active for urushiol.

Summer. Deep green, full size, and at peak biomass. Small greenish-white flowers in early summer; clusters of pale waxy berries (drupes) by late summer.

Fall. The plant turns scarlet, crimson, orange, and yellow — often the most colorful thing in the woods. Beautiful, and a strong identification cue. Still rash-causing.

Winter. Leaves are gone. The hairy aerial vines on tree trunks remain the most common winter ID. Pale berries may persist into early winter on female plants.

Clusters of small, whitish berries that persist into winter. Birds eat them and reseed poison ivy across property lines, which is why honest removal is about management, not promises of permanence.

Virginia creeper (Parthenocissus quinquefolia): five leaflets, not three. Often grows alongside poison ivy, which is why the two get confused.

Boxelder (Acer negundo) seedlings: three leaflets, but leaves sit opposite each other on the stem where poison ivy alternates, and boxelder leaflets sit on roughly equal stems.

Wild raspberry & blackberry: three leaflets on young canes, but with thorns or prickles on the stems. Poison ivy never has thorns.

Fragrant sumac (Rhus aromatica): three leaflets, similar habit, but all three leaflets are roughly the same length and the foliage gives off a noticeable scent when crushed.

Hog peanut (Amphicarpaea bracteata): a trailing legume with three leaflets that gets pulled up in mistaken-ID weeding all the time.

When in doubt, treat it as poison ivy until you know otherwise.

Never burn it: smoke carries urushiol into your lungs. Don't mow or trim it: machinery smears and aerosolizes the oil and the roots regrow anyway. And don't assume a sprayed, dead vine is safe: killed is not cleared, and dead growth stays rash-capable for years. For the longer version, see the Public Note on the homepage.

Urushiol exposure is cumulative. Even people who haven't reacted before can develop sensitivity after repeated contact — about 80–90% of adults will develop a rash from an amount smaller than a grain of salt. If you're guessing, don't pull it. That's what the on-site Poison Ivy Survey is for.

This season's schedule is fully committed, and I am not taking on new surveys or removals for the remainder of the year. The calendar reopens in spring 2027.