Let's cut straight to the chase. If you're seeing long-eared visitors in your yard or out on a hike, you're probably wondering: what do jack rabbits eat? The short answer is: almost any plant they can get their teeth on. But that's like saying humans eat food—it's true, but useless. As someone who's spent years observing these speedsters in the Southwest, I can tell you their diet is a fascinating story of adaptation, survival, and seasonal smarts. It's not just random munching. Understanding their menu is key to protecting your garden, appreciating their role in the ecosystem, and maybe even peacefully coexisting.

What's Inside This Guide

The Core Jack Rabbit Diet: A Detailed Plant List

Jack rabbits (which are technically hares, not rabbits) are strict herbivores. Their digestive system is built for processing tough, fibrous plant material. Forget the cartoon image of them only eating carrots. In the wild, their plate is far more varied and, frankly, tougher.

Their primary food sources are grasses and forbs (broad-leafed flowering plants). When these are scarce, they turn to shrubs and even the bark of young trees. Here’s a breakdown of what’s typically on their menu, based on research from sources like the USDA and various university extension services.

Food Category Specific Examples Notes & Why They Eat It
Grasses Blue Grama, Buffalo Grass, Western Wheatgrass, Needlegrass The staple. Provides bulk and fiber essential for their digestion. They prefer tender new growth.
Forbs (Weeds & Wildflowers) Clover, Dandelion, Wild Lettuce, Filaree, Mustard, Sagebrush (young shoots) Highly nutritious, often higher in protein and moisture than grasses. These are like their vitamins.
Shrubs & Woody Plants Rabbitbrush, Sagebrush, Mesquite, Creosote Bush, Juniper A survival food, especially in winter or drought. They'll nibble tender twigs, leaves, and bark.
Agricultural & Garden Crops Lettuce, Beans, Peas, Carrots (tops preferred), Beets, Young Berry Bushes, Bark of Fruit Trees These are like a jack rabbit buffet—tender, watered, and easy to find. A major source of human-wildlife conflict.
Succulents & Cacti Prickly Pear Cactus (pads and fruit) In arid regions, they skillfully eat around the spines. A crucial source of water.

One nuance most generic articles miss: jack rabbits are selective browsers, not lawnmowers. They'll pick the most nutritious parts of a plant. On a grass clump, they go for the fresh green blades, leaving the older, tougher stems. This selective pressure actually shapes the plant communities they live in.

I remember watching a black-tailed jack rabbit in Arizona spend nearly ten minutes meticulously stripping the tiny leaves off a creosote branch, ignoring the woody stem completely. It wasn't just eating; it was optimizing for nutrients with every bite.

How Their Eating Habits Change With the Seasons

Their diet isn't static. It's a dynamic response to what's available. If you think they eat the same thing year-round, you're misunderstanding their biggest survival trick: flexibility.

Spring: This is feast time. Tender new grasses and a flush of succulent forbs like clover and dandelion make up most of their diet. It's high in moisture and protein, helping them recover from winter and support breeding.

Summer: As grasses dry out and become fibrous (what ranchers call "cure"), jack rabbits shift more to remaining green forbs and the pads of prickly pear cactus. They often feed more at dawn and dusk to avoid heat and get plants with higher moisture content from overnight dew.

Fall: They target seed heads from grasses and forbs for concentrated energy. This is also when they start testing the bark on young trees and shrubs more frequently, preparing for leaner times.

Winter: This is the tough season. Green material is scarce. Their diet becomes dominated by dry grasses, the bark and twigs of shrubs (like sagebrush and rabbitbrush), and any remaining cured forbs. They'll dig through light snow to get to vegetation. This is when your garden's leftover kale or the bark of your young apple tree looks incredibly tempting.

The Water Question: Do They Need to Drink?

Here's a key adaptation. Jack rabbits can survive without ever drinking free water. They get almost all the moisture they need from the plants they eat. A diet of spring grasses or succulent cactus pads provides plenty. This is why they thrive in arid environments where other mammals struggle. However, if water is available (a creek, a dripping hose, a bird bath), they will drink it.

How to Protect Your Garden from Jack Rabbits (What Actually Works)

This is the million-dollar question for gardeners. You see the neatly clipped stems, the missing seedlings, the bark stripped in a ring around your tree. It's frustrating. Most advice online is either too cruel or completely ineffective. Let's talk strategy.

The ONLY 100% Effective Method: A physical barrier. Chicken wire or hardware cloth fencing. It needs to be at least 2 feet high and buried 6 inches into the ground, as they can dig. For individual trees, use cylindrical tree guards. It's work to install, but it's a permanent solution.

Plant Selection – The "Distract and Deny" Strategy: Instead of just trying to repel them, give them something else they prefer away from your prized plants. On the edge of your property, plant a patch of clover or native grasses. More strategically, fill your garden with plants they typically dislike.

Rabbit-Resistant Plants Jack Rabbits Usually Avoid:
  • Herbs: Lavender, Rosemary, Sage, Mint, Oregano (the strong scents deter them).
  • Flowers: Marigolds, Snapdragons, Geraniums, Ageratum, Lantana.
  • Vegetables: Onions, Garlic, Leeks, Potatoes, Rhubarb, Tomatoes (the plants themselves, not the fruit).
  • Shrubs: Barberry, Butterfly Bush, Oleander (toxic), Juniper (mature).

A warning: "rabbit-resistant" is not "rabbit-proof." A starving jack rabbit in a deep winter will try almost anything. But these plants are a strong first line of defense.

Repellents: Commercial or homemade (like a spray of garlic and chili powder). These can work as a temporary deterrent for light pressure, especially on ornamentals. But they wash off in rain or irrigation, and rabbits can get used to them. They're a maintenance-heavy tool, not a set-and-forget solution.

One common mistake I see? People only protect in spring and summer. You must winterize your defenses. That young tree is most vulnerable when snow covers their natural food. Put those tree guards on in the fall.

Common Misconceptions About Jack Rabbit Diets

Let's clear up some myths that even many wildlife sites get wrong.

Misconception 1: They love carrots and lettuce above all else.
They'll eat them, sure. But in the wild, these aren't available. They eat them in your garden because they're easy, soft, and full of water. It's convenience eating, not preference. A dandelion growing in your lawn is just as appealing to them.

Misconception 2: They are major agricultural pests for all crops.
Their impact is usually localized to field edges. They don't decimate entire large-scale crops like insects or diseases can. Their damage is often most keenly felt in home gardens and young orchards.

Misconception 3: If you see a jack rabbit, it's starving and needs food.
No. They are lean animals built for speed. Seeing their ribs slightly is normal. Feeding them human food (bread, crackers) or even store-bought rabbit pellets can disrupt their specialized digestion and make them dependent, which is a death sentence.

Your Jack Rabbit Diet Questions Answered

Are jack rabbits ruining my garden? What plants are safe to plant that they might leave alone?
Focus on the rabbit-resistant list above, especially aromatic herbs and plants with thick, fuzzy, or toxic leaves. For vegetables, onions, garlic, and potatoes are usually safe bets. The real trick is combining these with a physical barrier for your most vulnerable plants like young beans or lettuce. Think of your garden in zones—a sacrificial border of clover, a middle zone of resistant plants, and a fortified core for your favorites.
I see jack rabbits eating my lawn grass. Will they kill it?
Rarely. They clip it cleanly, like a lawnmower. Healthy grass will grow back from the roots. The problem is more aesthetic. If you have a major population, you might see thinning, but they're unlikely to cause permanent damage to an established lawn. They're actually providing you with free, quiet mowing service.
What's the difference between what a wild jack rabbit eats and what a domestic rabbit should eat?
A huge difference, and this is where people harm pet rabbits. Domestic rabbits have been bred for different diets and have more sensitive digestive systems. A jack rabbit's wild diet is extremely high in roughage and low in sugars. You should never feed a domestic rabbit primarily on grass clippings or random weeds from your yard (which could be contaminated). Stick to unlimited timothy hay, measured pellets, and safe greens like romaine for your pet. The jack rabbit's diet is a model for high fiber, not a direct menu.
How can I tell if it's a jack rabbit or a cottontail rabbit eating my plants?
Look at the damage and the animal. Cottontails are smaller, with shorter ears and a fluffy white tail. They tend to make clean, sharp cuts at a 45-degree angle on smaller stems. Jack rabbits, being larger, can take bigger bites and are more likely to girdle (strip bark in a ring around) young trees and shrubs. If you see bark removed high up (a foot or more off the ground), it's more likely a jack rabbit reaching up, while cottontails stay lower to the ground.
Is it true they eat their own droppings?
Yes, but not all droppings. Like other lagomorphs, they practice coprophagy. They produce two types of droppings: hard, round pellets (the final waste) and soft, nutrient-rich cecotropes. They re-ingest the cecotropes directly from their anus to pass the food through their digestive system a second time, extracting maximum vitamins (especially B vitamins) and proteins produced by gut bacteria. It's a vital part of their digestion, not a sign of sickness or lack of food.

Understanding the jack rabbit diet is more than just a list of plants. It's about seeing them as expert foragers shaped by a harsh environment. They're not out to get your garden; they're just following an ancient menu written by survival. With the right knowledge—using barriers, smart planting, and seasonal awareness—you can protect your plants and still appreciate these remarkable, fast-paced herbivores from a distance.