7 Secrets Revealed: Can Deer Eat Cabbage? (The Truth About Brassica Toxicity And Garden Protection)

Contents

The short answer is a resounding "Yes," deer not only can eat cabbage, but they absolutely love it, often treating your garden like an all-you-can-eat salad bar. As of this current date in December 2025, wildlife experts and gardeners agree that common garden cabbage (a member of the *Brassica* family) is a highly palatable and preferred food source for whitetail deer and other cervids.

This preference, however, is a double-edged sword for both the gardener and the deer, as an entire cabbage head is a juicy, succulent target that offers high nutritional value but can also pose hidden health risks if consumed in excess. Understanding the deer’s natural diet, their attraction to cruciferous vegetables, and the potential for toxicity is crucial for anyone living near a deer population.

The Definitive Answer: Why Deer Crave Your Cabbage Patch

Deer are classified as "browsers," meaning they prefer to eat leaves, stems, and soft, easily digestible plant parts over coarse grass. Cabbage, with its tender, juicy leaves and high water content, fits perfectly into this preferred dietary category. It is, unfortunately for gardeners, one of the least deer-resistant vegetables you can plant.

Deer will typically consume the outer leaves, the new growth, and can easily devour an entire head of cabbage, especially when other natural forage is scarce, such as during late fall or winter.

The Deer's Favorite Brassicas (Cabbage Family)

Cabbage belongs to the *Brassica* genus, a family of plants that deer find incredibly appealing. If you have cabbage in your garden, you can expect deer to also target its relatives:

  • Cabbage: A primary target due to its softness and high moisture.
  • Broccoli: Both the leaves and the head are highly sought after.
  • Cauliflower: Similar to broccoli, it is not deer-resistant.
  • Kale: Often used in deer food plots because of its high protein content.
  • Turnips and Radishes: Deer will eat the leafy tops and even dig up the roots/bulbs in late season.

Nutritional Breakdown: Cabbage as a Deer Superfood

While a garden raid is frustrating, the deer are seeking out key nutrients that are less available in their typical browse. Cabbage and other brassicas are, in fact, incredibly beneficial to a deer's diet in moderation, which is why they are frequently used by wildlife managers in food plots.

The main nutritional draw is the high concentration of protein and essential vitamins:

  • High Protein Content: Brassicas are known for their high protein levels, which are vital for deer, particularly during the summer and fall. This protein is essential for does nursing fawns and, most notably, for bucks growing their antlers.
  • Vitamins and Minerals: Cabbage is rich in Vitamin C, Vitamin K, and various B vitamins, contributing to the overall health and immune system of the deer.
  • High Palatability: The soft, leafy greens are easily digested and provide a quick source of energy and hydration.

For wildlife managers, specialized varieties like Ethiopian Cabbage are often planted specifically because they are fast-growing, nutritious, and highly attractive to deer, providing excellent early-season forage.

The Hidden Risks: Can Cabbage Harm Deer? (Brassica Toxicity Alert)

While cabbage is nutritious, consuming it in large, concentrated amounts can be detrimental to a deer’s health. This is the critical piece of information that separates a casual observation from a deep dive into deer biology. The danger lies in two main areas: Brassica Toxicity and Acidosis.

1. Brassica Toxicity (Anemia)

Cabbage, like other brassicas (turnips, kale, rape), contains compounds that, when consumed in massive quantities, can cause a condition known as Brassica Toxicity. This is a serious concern for deer managers and is the reason why supplemental feeding should be approached with caution.

  • The Danger Threshold: Research suggests that a deer would have to consume a diet composed of over 75% brassicas to begin experiencing adverse effects, such as a breakdown of red blood cells leading to anemia.
  • Real-World Risk: While unlikely in a wild setting where deer forage on a mixed diet, a deer that finds its way into a small, unprotected garden and consumes a large quantity of cabbage over several days could potentially face this risk.

2. Digestive Acidosis (Bloat)

The four-chambered stomach of a deer (a ruminant) is designed to digest high-fiber, low-sugar forage. When a deer suddenly gorges on a large amount of low-fiber, high-carbohydrate food—such as a pile of discarded cabbage trimmings or a whole garden patch—it can cause a rapid change in the stomach's pH.

  • The Effect: This rapid pH drop can lead to acute acidosis, which manifests as bloating and diarrhea. In severe cases, especially during winter when a deer's digestive system has adapted to a sparse, woody diet, this sudden change can be fatal within days.
  • The Caveat: It is worth noting that deer are generally "remarkably resistant to bloat" compared to other ruminants like sheep and goats, but the risk remains high when a drastic dietary change occurs.

Gardener's Guide: 7 Proven Ways to Protect Your Cabbage Patch

Since cabbage is a preferred food and is not deer-resistant, the only way to guarantee a harvest is through proactive protection. Relying on "deer-resistant" plants around your cabbage is often futile, as a hungry deer will eat almost anything.

Here are the most effective, up-to-date strategies for protecting your vulnerable brassicas:

  1. Physical Fencing (The Gold Standard): A physical barrier is the most reliable method. For whitetail deer, a fence must be at least 8 feet high, as they can easily jump a 6-foot barrier. Alternatively, a double-row fence with two 4-foot fences spaced 3-4 feet apart can confuse their depth perception.
  2. Electric Fencing: A three-wire electric fence, properly baited and maintained, can be highly effective. Deer learn quickly to avoid the shock, making it a powerful deterrent.
  3. Scent-Based Repellents: Use commercial repellents containing ingredients like rotten eggs, capsaicin, or predator urine. Crucially, rotate your repellents every few weeks, as deer quickly become accustomed to a single scent.
  4. Tulle Tunnels and Row Covers: For smaller patches, covering your cabbage with fine mesh netting or a tulle tunnel can hide the plants from view and create a physical barrier. This works well for the entire cabbage family.
  5. Planting Decoys (Sacrifice Plants): Plant a border of less-preferred, strongly scented herbs around your cabbage, such as garlic, chives, mint, or rosemary, though this is only a moderate deterrent.
  6. Motion-Activated Sprinklers: These devices use a sudden burst of water and motion to startle deer, providing a temporary but effective psychological deterrent.
  7. Welded Wire Fabric Cages: For individual, high-value plants, you can place a welded wire fabric cage or hardware cloth cylinder around the plant, cementing the posts into the ground for stability.
can deer eat cabbage
can deer eat cabbage

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