Cat Grass Vs Catnip Which Indoor Greenery Do Felines Actually Prefer

For indoor cats, access to natural stimuli is limited. Many cat owners turn to indoor greenery as a way to enrich their pets’ environment—both physically and mentally. Two of the most popular options are cat grass and catnip. While both are safe and widely available, they serve different purposes and elicit vastly different reactions in cats. Understanding the distinction between cat grass and catnip can help you decide which one—or whether both—is right for your feline companion.

Cat grass typically refers to young cereal grasses like wheatgrass, oat grass, or barley. It’s grown from seed and offers digestive and nutritional benefits. Catnip, on the other hand, is a member of the mint family (Nepeta cataria) known for its psychoactive effects on cats, triggered by the compound nepetalactone. The question isn’t just about preference—it’s about function, safety, and long-term value to your cat’s well-being.

What Is Cat Grass—and Why Do Cats Eat It?

Cat grass is not a single species but a general term for non-toxic, edible grasses cultivated specifically for cats. The most common types include:

• Wheatgrass – High in chlorophyll, vitamins A, C, E, and K, and amino acids.
• Oat grass – Softer texture, often more palatable to picky eaters.
• Barley grass – Rich in antioxidants and fiber.

Cats are obligate carnivores, meaning their primary diet should consist of animal protein. Yet, many still chew on grass in the wild and at home. This behavior is believed to aid digestion, help expel hairballs, and provide trace nutrients not found in commercial cat food. Indoor cats may lack access to outdoor grass, making cultivated cat grass a healthy substitute.

Tip: Rotate types of cat grass to see which your cat prefers—some respond better to oat grass due to its milder taste.

Unlike catnip, cat grass does not produce a behavioral high. Instead, it supports gastrointestinal health. Some cats will nibble gently; others may devour entire pots in one sitting. While vomiting after eating grass is common, it’s usually not a cause for concern unless it becomes frequent or is accompanied by lethargy or loss of appetite.

The Science Behind Catnip: Why Some Cats Go Wild

Catnip’s reputation precedes it. When exposed to dried or fresh catnip, some cats exhibit dramatic behaviors: rolling, rubbing, purring, hyperactivity, or even temporary aggression. These reactions are caused by nepetalactone, an essential oil released when the plant is crushed or bruised.

This compound binds to receptors in the cat’s nasal tissue, stimulating sensory neurons that influence the amygdala and hypothalamus—the brain regions responsible for emotion and behavior. The result is a brief euphoric state lasting five to fifteen minutes. Afterward, cats typically lose interest and won’t respond again for 30–60 minutes.

“About 50% to 70% of cats are genetically predisposed to respond to catnip. If your cat ignores it completely, they likely inherited the non-responsive gene.” — Dr. Sarah Lim, Feline Behavior Specialist

Kittens and senior cats are less likely to react. Sensitivity usually emerges between 3 and 6 months of age. Interestingly, big cats like lions and leopards also respond to catnip, suggesting the trait is deeply rooted in feline biology.

Comparing Cat Grass and Catnip: Key Differences

To make an informed choice, it helps to compare cat grass and catnip across several dimensions. The following table summarizes their characteristics:

Feature	Cat Grass	Catnip
Primary Purpose	Digestive aid, fiber source, mild nutrition	Behavioral stimulation, play encouragement
Active Compound	None (nutrient-based)	Nepetalactone
Cat Response Rate	Nearly all cats show some interest	50–70% genetic response rate
Effect Duration	Ongoing use; no peak cycle	5–15 minutes per exposure
Safety	Safe daily; overconsumption may cause mild vomiting	Safe in moderation; avoid constant exposure
Growth Time	7–14 days from seed	60–90 days to mature plant
Indoor Suitability	Excellent; low maintenance	Good; requires more light and space

This comparison shows that while both plants are beneficial, they fulfill different roles. Cat grass is functional and universally accessible, while catnip is recreational and selectively effective.

How to Grow and Maintain Both Safely at Home

One of the best ways to provide these greens is to grow them yourself. Store-bought versions work, but homegrown options ensure freshness, reduce cost, and give you control over pesticides and soil quality.

Step-by-Step Guide to Growing Cat Grass

1. Choose seeds: Use organic wheat, oat, or barley grass seeds labeled for pet consumption.
2. Select a container: Any shallow pot with drainage holes will work. Recycled food containers with holes poked in the bottom are fine.
3. Add soil: Fill with organic potting mix, leaving ½ inch at the top.
4. Plant seeds: Sprinkle seeds densely across the surface and lightly press into the soil.
5. Water gently: Mist or water until moist, not soggy.
6. Place in indirect light: Keep near a window but out of direct sun for the first 3–5 days.
7. Harvest in 7–10 days: Once grass reaches 3–4 inches, place it where your cat can access it.

Replace every 1–2 weeks as the grass yellows or gets trampled. Cats tend to knock pots over, so consider placing them in a tray or using weighted containers.

How to Cultivate Catnip

Catnip is a hardy perennial herb that thrives in sunny spots. Growing it indoors requires more commitment:

• Use deeper pots (6+ inches) to accommodate root development.
• Provide at least 6 hours of direct sunlight daily or use a grow light.
• Allow soil to dry slightly between waterings to prevent root rot.
• Pinch off flowers to encourage bushier growth.

Once mature, harvest leaves and stems by cutting above a leaf node. Dry them in a cool, dark place for up to two weeks, then store in an airtight container. Fresh catnip is less potent than dried, as drying concentrates nepetalactone.

Tip: Freeze dried catnip in small cloth bags to preserve potency and create interactive toys.

Real-World Example: How One Household Balanced Both Greens

Maria, a cat owner in Portland, noticed her two cats reacting very differently to indoor greenery. Luna, a 4-year-old tabby, would sprint to roll in catnip the moment it was offered. But after a few minutes, she’d lose interest and walk away. Milo, a shy 3-year-old domestic shorthair, ignored catnip entirely but spent time each day nibbling on a small pot of wheatgrass.

After consulting her vet, Maria realized that Milo’s grass-eating habit coincided with fewer hairball incidents. She began rotating oat and barley grass weekly. For Luna, she limited catnip sessions to twice a week to prevent overstimulation. She also stuffed a small toy with dried catnip, reserving it as a reward during training.

Within a month, both cats showed improved mood and reduced stress-related behaviors. “I didn’t realize they needed different things,” Maria said. “Now I treat cat grass like a dietary supplement and catnip like a fun enrichment tool.”

Expert Recommendations and Common Misconceptions

Despite their popularity, myths persist about both plants. One common belief is that catnip is addictive. In reality, cats cannot become dependent on it. Another misconception is that all grass is safe for cats. Lawn chemicals, pesticides, and toxic houseplants (like lilies or pothos) can be dangerous—so never let your cat graze on unknown plants.

“Catnip is not a necessity, but it’s a valuable tool for mental stimulation. Meanwhile, cat grass fills a biological urge to consume fibrous material, which supports natural elimination of indigestible matter.” — Dr. Alan Torres, Veterinary Nutritionist

Veterinarians generally agree that offering both options—when appropriate—creates a more enriched environment. However, moderation is key. Overuse of catnip can lead to desensitization, while too much cat grass may cause stomach upset in sensitive cats.

Frequently Asked Questions

Can I give my cat both cat grass and catnip at the same time?

Yes, but monitor your cat’s reaction. Some cats may focus on one over the other. It’s best to introduce them separately first to observe individual preferences and sensitivities.

Is it safe if my cat eats a lot of cat grass?

Moderate consumption is safe and even beneficial. However, excessive intake can lead to vomiting or diarrhea. Replace old grass regularly to prevent mold, which is harmful if ingested.

Why doesn’t my cat react to catnip?

Lack of response is usually genetic. About 30% of cats don’t inherit the sensitivity receptor. Age and health can also play a role. Kittens under six months and older cats often show diminished or no reaction.

Action Plan: Choosing the Right Greenery for Your Cat

Not sure where to start? Follow this simple checklist to determine the best option—or combination—for your cat:

✅ Assess your cat’s behavior:

Does your cat seek out chewing, or respond to scent-based stimulation?

✅ Test catnip first:

Offer a small amount of dried catnip. Observe for rolling, rubbing, or hyperactivity.

✅ Introduce cat grass:

Grow a batch and place it in a quiet area. Watch for nibbling or prolonged interest.

✅ Monitor health impact:

Note any changes in digestion, vomiting frequency, or coat condition.

✅ Adjust based on results:

Stick with cat grass if your cat ignores catnip. Limit catnip to 1–2 times per week if overexcitement occurs.

✅ Rotate varieties:

Try different grass types and catnip forms (dried, fresh, toy-infused) to keep engagement high.

Final Thoughts: Enrichment Through Nature

Cat grass and catnip are more than novelty items—they’re tools for improving your cat’s quality of life. Cat grass supports physical health through gentle digestion and nutrient supplementation. Catnip enhances mental well-being by triggering instinctual behaviors and reducing boredom.

The answer to “which do felines actually prefer?” isn’t universal. Preference depends on genetics, personality, age, and environment. The smart approach isn’t choosing one over the other, but understanding how each contributes to a balanced, stimulating indoor lifestyle.

💬 Have you tried growing cat grass or catnip at home? Share your experience, tips, or questions in the comments—your insights could help fellow cat lovers make better choices!