Fall in New England starts a little slowly. You can feel it in how the air shifts and the canopy begins to drop its leaves. Most of the time, I just catch myself staring at how beautiful the woods look. This is also the time the energy of the forest changes direction, making fall foraging in New England a truly special experience.
Back in spring and summer, a plant’s vitality pushes upward into leaves, flowers, and fruit. But in autumn, as the ground cools, that medicinal energy retreats downward into the roots and inward to the inner bark. For many of us herbalists, fall is the season of heavy lifting. We dig, prune, and prepare the dense, structural medicines that will carry us through the cold winter months.
If you wildcraft in the Northeast or wander the hardwood forests stretching up toward Montreal, this seasonal transition dictates your harvest. You have to wait for the leaves to drop so the plant fully draws its reserves down, but you must act before the ground freezes solid.
Here are five essential medicinal barks and roots to look for this fall as you stock your apothecary. I love heading out for this, and you can easily bring your kids along to make it a wonderful, dirt-under-the-fingernails family bonding time.
Prickly Ash (Zanthoxylum americanum, Rutaceae)
This shrub thrives in the open woods, rocky hillsides, and thickets of eastern North America. In the wild, you can easily identify it by the prominent brown, cone-shaped prickles arming its branches. It has dark green, alternate compound leaves that release a sharp, citrusy scent when crushed. Before these leaves even unfurl in the spring, the plant produces clusters of small, yellowish-green flowers on the previous season’s twigs. These eventually give way to small red capsules containing shiny black seeds. Prickly ash is a foundational circulatory stimulant.
The bark and berries hold profoundly warming and stimulating virtues. When you chew the bark, it gives a sweet, aromatic, bitter flavor followed by a persistent, acrid tingling. This sensation rapidly induces a heavy flow of saliva, earning it the “toothache tree” moniker. Beyond oral relief, its diaphoretic and carminative actions work systemically to combat sluggish circulation. It also acts as a gentle tonic that rouses a depressed nervous system and invigorates gastric secretions and stimulates deeper breathing. It is highly valuable for physical stagnation, cold extremities, or a sluggish digestive tract.
Because the weather turns cold during autumn, incorporating warming circulatory herbs becomes essential to seasonal wellness. The late-season harvest window presents the ideal time for ethically gathering this bark. During these months, the plant’s energy recedes from the canopy, concentrating potent constituents in the cambium layer. For anyone wildcrafting in the Northeast, harvesting and tincturing Prickly Ash bark provides a powerful, locally sourced ally to restore vitality and peripheral blood flow when winter sets in.
Willow (Salix spp., Salicaceae)
You will often find willow growing along riverbanks, swamps, and damp edges across the Northeast. These graceful trees and shrubs feature slender, flexible branches and long, narrow leaves that shimmer silver-green in the wind. In early spring, before the leaves appear, they push out soft, fuzzy catkins—the familiar “pussy willows” that eventually bloom into tiny, nectar-rich flowers.
While prickly ash warms and stimulates, willow cools and settles. It is rich in salicylates, and the inner bark acts as a systemic pain reliever, fever reducer, and anti-inflammatory. It perfectly suits dull, aching, hot, and inflamed tissue states. It works beautifully for any kind of damp, stagnant joint pain that usually tends to flare up when the weather turns rainy and raw.
You do not want to miss gathering this bark; it is a true highlight of the autumn season. When you harvest after the leaves drop, you capture the highest concentration of medicine in the inner bark. Adding willow to your apothecary means you are ready for any of winter’s aches and pains. As you plan your woodland excursions, make sure to ethically prune a few willow branches to keep this reliable pain-relieving ally on hand.
Black Haw (Viburnum prunifolium, Adoxaceae)
Black haw grows as a large shrub or small tree in moist woods and thickets. It features finely toothed, oval leaves that turn a striking red or purple in the autumn. In spring, it displays showy, flat-topped clusters of creamy white flowers, which eventually mature into blue-black, berry-like drupes that birds love. Black haw is a foundational smooth muscle relaxant.
Gathering the root and stem bark provides one of the most reliable antispasmodics in the Western materia medica. Herbalists heavily rely on it for intense pelvic cramping, uterine spasms, and severe body tension that feels rigid and locked down. It specifically targets the autonomic nervous system’s control over smooth muscle. This makes it an essential medicine for acute, gripping pain where tension needs immediate release.
If you are going to add this to your apothecary, you must be willing to wait for the foliage to drop first. By doing so, you ensure the plant’s relaxing properties are fully stored below ground and in the inner bark. Embracing this seasonal transition and gathering Black Haw ensures you have a potent, natural remedy for the tight, cramped states that often accompany the stress of the colder months.
Black Birch (Betula lenta, Betulaceae)
Walking through the woods, you can often identify black birch by its smooth, dark, cherry-like bark on younger trees, which breaks into thick, irregular plates as it ages. It has alternate leaves with finely serrated edges that turn a brilliant gold in the autumn. In spring, it produces drooping male catkins and smaller, upright female catkins. You can always confirm its identity by scratching a twig and smelling the sharp, unmistakable scent of wintergreen or rootbeer.
Like willow, the inner bark of black birch contains pain-relieving salicylates, but in this case, they are the methylsalicylates, initially warming then cooling, like wintergreen (or icy hot, the pharmaceutical version). Black birch brings a deeply warming and moving energetic profile. It makes a beautiful infused oil or tincture for musculoskeletal, digestive, and respiratory support. It works incredibly well to ease stiff, cold, and tense muscles that seize up as the temperature drops, soothing the body from the outside in.
You must harvest this bark carefully to protect the tree, making it a mindful exercise in ethical wildcrafting. When you take small twigs or prune the branches after the golden leaves fall, it yields this potent, sweet-smelling medicine. No Northeastern autumn apothecary is truly complete without gathering a little black birch to stock your shelves with warming, muscle-melting relief.
Sarsaparilla (Aralia nudicaulis, Araliaceae)
Sarsaparilla thrives in the rich, acidic soils of deep, shaded woods. It pushes up a single, leafless flower stalk alongside a separate leaf stalk that divides into three parts, each bearing fine-toothed leaflets. In late spring, it produces rounded umbels of tiny, greenish-white flowers that mature into purplish-black berries by late summer. Beneath the leaf litter is its true treasure: its long, aromatic root runners.
Sarsaparilla acts as a grounding, systemic nourisher. It gently supports liver function and encourages the body to clear metabolic waste. As we transition away from the light, fresh foods of summer into heavier autumn and winter diets, this root works as a steady restorative. It is a balancing anti-inflammatory that supports muscles, digestion, and the organs of filtration. It quietly clears out bodily stagnation, cleanses the blood, and builds up your overall systemic resilience for the cold months ahead.
Fall is the perfect time to dig these long runners! Those of us in the Northeast know that this makes for a highly rewarding part of fall foraging in New England.
Once the leaves die back, the aromatic roots are plump with stored energy and medicine. When you map out your plans for fall foraging, be sure to seek out these deep woods runners. Adding them to your apothecary provides an earthy, foundational tonic that keeps your body balanced all winter long.
Safe, ethical wildcrafting requires paying deep attention to the environment you harvest from. Knowing when to cut bark and how to dig a root without destroying the local stand separates merely collecting recipes from truly practicing herbalism.
If you want to deepen your understanding of seasonal harvesting and medicine-making, I explore these barks and roots—along with precise guidelines for gathering them—deeply in the autumn section of my upcoming book, The Herbal Year.
