What Is the Shrub Glowing Fluorescent Red in Fall? Identifying Burning Bush

As the fall color show gets going, one shrub tends to outshine everything around it: a rounded, waist-to-head-high bush that turns a shade of red so saturated it looks almost artificial — a glowing, fluorescent pink-to-crimson that seems to light up from within. You see them lined along foundations, framing driveways, and clipped into hedges in older neighborhoods and commercial plantings, and for a couple of weeks in October they are the brightest thing on the block. That is burning bush (Euonymus alatus), also called winged euonymus or winged spindle-tree, and once you know the trick to identifying it — a feature hiding right on the stems — you will spot it everywhere. Here is how to recognize it, and why an increasing number of states would rather you did not plant it.

How to Identify Burning Bush

The fall color is what catches your eye, but burning bush has a year-round giveaway that no other common landscape shrub shares. Look closely at the green twigs and younger stems and you will find flat, corky ridges — "wings" — running lengthwise along them, usually in two to four lines like the fins on a rocket. That single feature identifies the plant in any season, even in winter when the leaves are gone. The full set of marks:

• Fall color: an intense, uniform fluorescent pink-red to crimson across the whole shrub, typically peaking in October and often brighter than any nearby tree
• Winged stems: corky, flat ridges running lengthwise along the green twigs — the definitive clue, present all year and unique among common yard shrubs
• Leaves: small, elliptical, and finely toothed, arranged in opposite pairs along the stem (two leaves directly across from each other, not staggered)
• Fruit: small reddish-purple capsules that split open in fall to reveal bright orange, fleshy-coated seeds dangling beneath the foliage
• Habit: a dense, twiggy, rounded shrub usually 5 to 10 feet tall, frequently sheared into tidy hedges and mounds

If a shrub is glowing neon red in October and its twigs have those corky lengthwise wings, you have burning bush. The wings alone separate it from nearly every look-alike: many shrubs turn red in fall, but almost none carry ridged, winged stems.

Why Is It Called Burning Bush?

The name is pure description: at peak the shrub really does look like it is on fire, a solid dome of glowing red that seems to smolder in low autumn light. The color comes from the same process behind all fall foliage — as the shrub shuts down for winter and its green chlorophyll breaks down, red pigments called anthocyanins are unmasked and, in this species, produced in abundance. Burning bush is unusually consistent and vivid about it, which is exactly why nurseries sold it so heavily for decades as a reliable, low-maintenance source of fall color. (This plant is unrelated to the "burning bush" of the Bible, and also different from the summer annual sometimes sold under the same nickname, Bassia scoparia — the winged, red-in-fall shrub described here is the one people are usually asking about.)

A Beautiful Plant With a Problem

Here is the catch that has turned burning bush from a garden-center staple into a plant many experts now discourage: across much of the eastern and midwestern United States it is invasive. Birds eat the abundant fruit and scatter the seeds far from the yard, and the shrub sprouts readily in forests, field edges, and roadsides, where it forms dense thickets that shade out and crowd out native plants. Because it tolerates deep shade and a wide range of soils, it can spread aggressively into natural areas with no help from anyone. Several states — including Massachusetts, New Hampshire, and others — have banned or restricted its sale, and many conservation and extension programs actively recommend against planting it.

If you love the fall color but want a better-behaved plant, several native shrubs deliver similar or better red without the invasive baggage: red chokeberry (Aronia), winterberry holly, Virginia sweetspire, fothergilla, and native viburnums all turn rich shades of red and burgundy and support local wildlife. Black gum and red maple do the same job at tree scale. As for existing burning bushes, note that Euonymus seeds and fruit are considered mildly toxic if eaten, so this is a plant to enjoy for its color, not one to sample — keep the berries in mind around small children and curious pets.

Quick field call: a shrub glowing fluorescent red in October with corky, winged ridges along its green twigs is burning bush (winged euonymus) — gorgeous, but invasive across much of the country.

Not sure whether that blazing red shrub is burning bush or one of the native look-alikes worth keeping? Snap a photo of the leaves, stems, and any fruit and let Spotter help you identify it, so you know exactly what is glowing in your yard before you decide what to do with it.