Is Honeysuckle Deer Resistant?

Honeysuckle is not reliably deer resistant. Whether deer browse on your honeysuckle depends heavily on the species you’re growing, what else is available nearby, and the time of year. Some honeysuckle species are actively sought out by white-tailed deer, while others rank lower on their preference list but still get eaten, sometimes in surprising quantities. And even when deer do leave the foliage alone, they often eat the berries, which creates a different problem entirely.

Which Honeysuckle Species Deer Prefer

The genus Lonicera includes dozens of species, and deer do not treat them all the same. Morrow’s honeysuckle (Lonicera morrowii), a non-native bush honeysuckle common in the eastern United States, was found to be “highly preferred” in a study examining deer feeding selectivity for invasive plants.¹ Deer chose it readily alongside other invasive shrubs and native trees like red maple.

Amur honeysuckle (Lonicera maackii), another widespread invasive bush honeysuckle, tells a different story. Research tracking deer browse preferences across multiple sites found that Amur honeysuckle electivity was negative at most locations, meaning deer generally passed it over in favor of other available plants.² That sounds like good news if you’re hoping deer will leave it alone, but “not preferred” is very different from “deer resistant.” In practice, deer still browsed it; they simply ate other things first when given a choice.

Japanese honeysuckle (Lonicera japonica), the vigorous vine form that blankets forest edges across much of the Southeast and Mid-Atlantic, is widely recognized as a deer forage plant. It stays green well into winter in many climates, which makes it especially attractive during the cold months when other browse options have died back. If you’ve seen a honeysuckle vine browsed down to nubs in February, Japanese honeysuckle is the likely suspect.

Why Some Honeysuckles Get Eaten Less

The variation in deer preference across honeysuckle species is partly explained by chemistry. A study comparing herbivore damage and defensive compounds across native and non-native Lonicera species found that native honeysuckles suffered more herbivore damage than non-native ones.³ The researchers analyzed phenolic compounds and iridoid glycosides in the leaves, which are the types of chemicals plants use to make themselves taste bad or become harder to digest. Chemical defense profiles and concentrations of specific compounds varied by species, though geographic origin alone didn’t consistently predict which species were more chemically defended.

The takeaway is that some non-native honeysuckles may have defense chemistry that North American herbivores haven’t fully adapted to. This doesn’t make them inedible; it means local insects and browsers may be less efficient at dealing with unfamiliar compounds. Reduced attraction or deterrence of feeding, or some combination of both, likely gives non-native honeysuckles a competitive edge over their native relatives.³ But that competitive edge is relative, not absolute. Deer are generalist browsers and will eat things that aren’t their top pick, especially when the more palatable options run thin.

When “Not Preferred” Still Means Heavily Browsed

Here’s where the deer resistance question gets complicated. Even Amur honeysuckle, a species deer generally don’t prefer, can end up forming a massive part of their diet. At a nature preserve in Ohio where Amur honeysuckle had invaded heavily, researchers estimated that deer consumed over 17,000 kilograms of its leaves and more than 2,000 kilograms of its twig stems over twelve months.⁴ That worked out to an estimated 14 to 47 percent of the deer’s annual diet, depending on assumptions about daily intake. Consumption peaked in the spring and summer, with deer eating over 3,500 kilograms in May alone.

Why would deer eat so much of a plant they supposedly don’t prefer? Because preference is always relative to what’s available. In forests where invasive honeysuckle dominates the understory, it may be one of the few leafy shrubs within reach. Amur honeysuckle also has an extended leaf season: it leafs out earlier in spring and holds its leaves later into fall than most native shrubs. During those shoulder seasons, it may be one of the only green options in the understory, and deer will eat what’s there. Calling it “deer resistant” would badly mislead anyone who planted it expecting deer to ignore it.

The study that found deer didn’t prefer Amur honeysuckle also investigated whether deer turned to it when more-preferred foods ran out. The researchers found no evidence for that pattern either; there was no clear relationship between how much honeysuckle deer ate and how much preferred browse was left.² Deer browsing on honeysuckle seems to depend less on hunger-driven desperation and more on the overall woody species composition at a given site. In other words, local context matters more than a simple ranking of palatability.

Honeysuckle Bounces Back From Browsing

Even when deer do browse honeysuckle heavily, the plant often shrugs it off. Research on Amur honeysuckle resprouts found that deer browsing had no measurable effect on growth over the course of a growing season. The shrubs fully compensated for the tissue lost to deer, regrowing enough leaves and stems that browsed plants ended up no smaller than unbrowsed ones.⁵ Even when browsing was combined with honeysuckle leaf blight, a fungal disease, there was no interaction that slowed recovery. The resprouts absorbed both stresses without measurable harm.

This resilience is part of what makes invasive honeysuckles such tenacious plants. After being cut to the ground, Amur honeysuckle resprouts vigorously from the stump. The number of new shoots, total shoot length, and leaf production all increase with the diameter of the original stem, meaning larger, more established plants have more energy reserves to draw on.⁶ Resprouts in open, sunny sites produced significantly more shoots and leaves than those in forested sites, which makes sense: more light means more photosynthesis and faster regrowth.

For gardeners, this means that even if deer browse your honeysuckle regularly, the plant is unlikely to die from the damage. You might see ragged-looking foliage or stripped lower branches, but the shrub will typically regrow. Whether that’s reassuring or frustrating depends on your perspective. If you planted honeysuckle as an ornamental, browsing damage is cosmetic annoyance. If you’re trying to control invasive honeysuckle on your property, the fact that deer browsing barely slows it down is part of the problem.

Deer Eat the Berries and Spread the Seeds

The deer-honeysuckle relationship has another dimension that gets less attention from gardeners but matters enormously for anyone thinking about the plant ecologically. Deer don’t just browse the leaves and twigs; they eat the fruits and, in doing so, spread honeysuckle seeds across the landscape. Research confirmed that white-tailed deer ingest ripe Amur honeysuckle fruit and pass intact seeds. About 68 percent of those voided seeds were viable, though that was somewhat lower than the viability of seeds taken directly from ripe fruits.⁷

A separate study quantified this further. In an invaded area, about 31 percent of deer pellet groups contained germinable Amur honeysuckle seeds, with some individual pellet groups holding up to 30 germinable seeds.⁸ By combining movement data with estimates of how long seeds spend in the gut, the researchers projected that female deer disperse over 90 percent of ingested seeds more than 100 meters from the parent plant, and can occasionally carry seeds nearly 8 kilometers. That makes deer one of the most effective long-distance dispersal agents for invasive honeysuckle, more so than most songbirds, which tend to deposit seeds closer to the source.

The practical implication is that deer aren’t just failing to control honeysuckle; they’re actively helping it spread. If you have fruiting honeysuckle on your property and deer passing through, those deer are planting honeysuckle seeds in their droppings across a wide area. Roughly two-thirds of those seeds can germinate. This is one reason land managers who are serious about controlling invasive honeysuckle prioritize removing plants before they fruit, regardless of how much deer browse the foliage.

Practical Advice for Gardeners

If you’re choosing plants for a deer-prone landscape, treating any honeysuckle as “deer resistant” is a gamble. The safest assumption is that deer will sample it and, depending on conditions, may eat it heavily. A few practical considerations can help:

Species choice matters: Non-native bush honeysuckles like Amur honeysuckle tend to be browsed less eagerly than some native species or Japanese honeysuckle vine. But “browsed less eagerly” can still mean substantial damage if deer pressure is high or other food is scarce.
Seasonal vulnerability: Honeysuckle’s extended leaf season, leafing out before most native shrubs in spring and holding leaves into late fall, means it may attract deer browsing precisely during the weeks when nothing else is green. Early spring and late autumn are the highest-risk windows.
Deer pressure varies locally: A honeysuckle that survives unbothered in a suburban yard with moderate deer traffic might be stripped bare in a rural property surrounded by forest. Local deer density and the availability of alternative browse are the dominant factors.
Fencing works; repellents help: Physical barriers remain the most reliable protection for any plant deer find even mildly palatable. Spray-on repellents can reduce browsing but need reapplication, especially after rain.

If you’re planting honeysuckle specifically because you heard deer won’t touch it, reconsider. There are genuinely deer-resistant shrubs that perform better against browsing pressure, including plants with strong aromatic oils or spiny foliage that deer consistently avoid. Honeysuckle doesn’t belong in that category.

The Feedback Loop Between Deer and Invasive Honeysuckle

Ecologists studying the relationship between deer and invasive honeysuckle have noticed something counterintuitive. In forests where invasive honeysuckle is abundant, deer browse it regularly but don’t suppress it, and their browsing may actually harm native plants more than the honeysuckle itself. The mechanism is straightforward: when deer browse in a forest understory dominated by honeysuckle, they consume both the honeysuckle and whatever native shrubs and tree seedlings are trying to grow alongside it. The honeysuckle compensates and regrows. Many of the native plants don’t recover as well, especially shade-tolerant tree seedlings that grow slowly and can’t replace lost tissue quickly.

This creates a situation where deer browsing reinforces honeysuckle dominance. The invasive shrub tolerates the damage; the native competition doesn’t. Over time, the understory becomes even more honeysuckle-dominated, which means deer have even fewer alternatives and eat even more honeysuckle, which they then spread through seed dispersal in their droppings. It’s a self-reinforcing cycle that makes both the deer and the honeysuckle harder to manage independently.

At the Ohio site where deer consumed an estimated 14 to 47 percent of their annual diet from Amur honeysuckle, researchers noted that this level of consumption fits the pattern of “apparent competition,” where an abundant, tolerant invasive plant subsidizes herbivore populations that then disproportionately damage the rarer native species sharing the same habitat.⁴ The honeysuckle isn’t hurt by the deer. The native plants around it are.

Native Honeysuckles and the Deer Question

Most of the research on deer and honeysuckle focuses on the invasive non-native species because those are the ones causing ecological problems. But native North American honeysuckles deserve a mention, because the picture for them is worse when it comes to deer resistance. Native Lonicera species experienced greater herbivore damage than non-natives when grown side by side in a common garden.³ Local herbivores, including both insects and browsers, have had thousands of years to adapt to native honeysuckle chemistry and have become efficient at consuming it.

If you’re choosing a native honeysuckle for wildlife-friendly landscaping, which is ecologically a much better choice than planting an invasive species, expect that it will attract more browsing than its non-native relatives. That’s actually a feature rather than a bug from a conservation standpoint: native plants feeding native herbivores is the whole point of wildlife-friendly planting. But it does mean you should plan for protection during establishment, when young plants are most vulnerable to being killed outright by heavy browsing. Once established, native honeysuckles can tolerate moderate browsing, though they lack the aggressive compensatory regrowth that makes invasive species so hard to kill.

Species like trumpet honeysuckle (Lonicera sempervirens), a native vine valued for its tubular red flowers and hummingbird appeal, is occasionally listed as moderately deer resistant by nurseries. That assessment is based more on anecdotal landscaping experience than on controlled studies. In areas with high deer pressure, even trumpet honeysuckle will get browsed, particularly new growth in spring. The honest framing is that no honeysuckle species should be considered reliably deer proof, and gardeners in high-pressure areas should always plan accordingly.

1
Biological Invasions. Deer feeding selectivity for invasive plants
2
Invasive Plant Science and Management. White-tailed deer browse preference for an invasive shrub, Amur honeysuckle (Lonicera maackii), depends on woody species composition
3
PubMed. Comparative Herbivory Rates and Secondary Metabolite Profiles in the Leaves of Native and Non-Native Lonicera Species
4
PubMed Central. White-tailed deer browse on an invasive shrub with extended leaf phenology meets assumptions of an apparent competition hypothesis
5
Journal of the Torrey Botanical Society. Compensation by resprouts of clipped Amur honeysuckle (Lonicera maackii, Caprifoliaceae) shrubs to honeysuckle leaf blight and deer browsing
6
The Journal of the Torrey Botanical Society. Effect of clipping and honeysuckle leaf blight (Insolibasidium deformans, Platygloeaceae) on resprouting of Amur honeysuckle (Lonicera maackii, Caprifoliaceae) shrubs
7
Natural Areas Journal. White-tailed Deer (Odocoileus virginianus) Disperse Seeds of the Invasive Shrub, Amur Honeysuckle (Lonicera maackii)
8
Plant Ecology. Seed dispersal of an invasive shrub, Amur honeysuckle (Lonicera maackii), by white-tailed deer in a fragmented agricultural-forest matrix