Best Cat Grass Kits and Seeds for Munching and Nibbling

Just about every cat naturally munches on grass – but why do they do it?

I’ll just be upfront about it: humans don’t know why cats eat grass. Speculations abound, but there’s little consensus on the true reason why virtually all cats instinctively nibble on grass. Let’s go over some of the popular theories.

Because in so many cases, eating grass makes cats vomit, one theory is that this is exactly why they consume it – to help get rid of indigestible parts of prey or to get rid of hairballs. Similarly, the fiber content of grass could work as a digestive aid. Another theory is that cats eat grass as a mineral supplement. Grass also contains chlorophyll, which has multiple uses as a remedy for pain, infection, anemia, and skin disease. The folic acid in grass can help improve circulation.

Besides that, cats might just enjoy eating grass for fun. It has an interesting texture and flavor that might add a little variety and joy to their lives.

Without the ability to nibble on appropriate grass, outdoor cats may turn to chemically-treated grass and indoor cats may turn to toxic houseplants and flowers. Offering a planter of cat grass provides a healthy and safe outlet for these munching instincts.

What is cat grass, anyway?

Cat grass is a straightforward product – it’s just a grass or blend of grasses that is safe for cats to eat. While oat grass is the true “cat grass”, other grasses like wheat, rye, and barley are also commonly used. Any grass marketed as a cat grass is appealing to kitty taste buds. For beginners, cat grass is available in kits that supply a planter, seeds, and soil, making it easy to get started growing cat grass inside of your home. With appropriate water and sunlight, the seeds will sprout in about 2-7 days. After a couple of weeks have passed, you’ll have a little grass garden for your cat to enjoy.

Choosing the Best Cat Grass

While each of these types of grass has a slightly different set of qualities and benefits, they’re all good choices. Some finicky cats will prefer different grasses to others, so it’s a good idea to try out different grasses and blends to find the type that your cat prefers.

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Oat grass is the true cat grass – a package of seeds labeled just “cat grass” typically contains oat seeds. It is a slightly sweeter-tasting grass than the others listed here, making it appealing to finicky feline tastes.


Containing 70% chlorophyll and packed with minerals, wheatgrass is a popular addition to the diet of health-conscious humans for the same reasons why it’s a good addition to your cat’s. It can help to fight inflammation and improve immune health.


Ryegrass is a shorter, more durable grass, meaning that it can easily spring back after your cat rolls in it.


This tall grass reaches up to 14” high and grows quickly, making it a great choice for the most voracious nibblers.

Look for organic seeds.

They’re harvested from plants grown without chemical pesticides, herbicides, and fertilizers, making them safe a safe choice for your cat.

Choosing the Right Kit

If you choose to use a cat grass kit, you’ll find that they come in shapes and styles to suit different preferences and living conditions. Some feature organic potting soil and seeds, while others don’t. Keep location in mind when choosing your planter or kit. Whether you place your cat’s garden on a catio or a large windowsill, it’s important that it is the right size and shape.

Top 5 Best Cat Grass Seeds and Kits

Grass Price Quality Rating
The Cat Ladies 100% Organic Cat Grass KitThe Cat Ladies 100% Organic Cat Grass Kit
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$ A+ 5 stars
SmartCat Kitty's GardenSmartCat Kitty’s Garden
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$ A+ 5 stars
Pet Grass Whisker GreensPet Grass Whisker Greens
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$ A 5 stars
Todd’s Seeds Wheatgrass SeedsTodd’s Seeds Wheatgrass Seeds
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$ A- 4.5 stars
Petlinks Nibble-Licious Organic Cat Grass SeedsPetlinks Nibble-Licious Organic Cat Grass Seeds
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$ A 5 stars

The Cat Ladies 100% Organic Cat Grass Kit Review

This starter kit is a quirky and adorable gift

The kit comes with everything you need to get started growing cat grass in an adorable eco-friendly planter mug complete with a stylized cat face design. The kit includes an organic blend of wheat, oats, rye, barley, and flax that’s undergone a strict selection process for quality. In addition to the seeds, the kit includes organic coconut coir soil for the grass to grow in. It offers detailed instructions to make growing your first cat garden a breeze. – Buy It


  • 100% organic
  • A perfect gift for beginners
  • Includes a blend of cat grasses – perfect for those who aren’t sure what type of grass is their cat’s favorite
  • Cute and quirky design


  • Doesn’t include drainage holes

SmartCat Kitty’s Garden Review

A starter kit featuring a combination of seeds

This starter kit comes with everything you need to get started. It includes a blend of organic wheat, oat, barley, and rye seeds, peat moss soil pellets, and, of course, a planter. The planter has four different draining compartments and a decorative square wooden box. – Buy It

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  • A blend of different grasses allows your cat to sample different types – perfect for those who aren’t sure what kind of grass their cat will enjoy
  • Includes everything you need to get started – perfect for beginners
  • The wooden box base is visually appealing
  • Features drainage holes to facilitate healthy growth
  • 100% organic


  • Mold growth is a common problem with this kit

Pet Grass Whisker Greens Review

This wheatgrass is delivered at the peak stage of growth – no planting required!

Each shipment provides three small pots of fresh 100% organic wheatgrass, carefully cultivated and then shipped for optimal freshness. The grass arrives at the peak of growth, ready for your cat to dive in. This is a convenient choice for those who don’t have the time or inclination to grow their own cat grass. – Buy It


  • Extremely convenient – no planting necessary
  • 100% organic wheatgrass
  • Wheatgrass is rich in beneficial chlorophyll and vitamins
  • Features drainage holes to promote healthy growth


  • The lightweight pots may be easy for cats to overturn

Todd’s Seeds Wheatgrass Seeds Review

Chemical-free, laboratory-tested wheatgrass seeds with a great reputation for success

With an almost 100% germination rate, these rigorously tested seeds consistently produce thick, healthy wheatgrass. For those who appreciate the health benefits of wheatgrass and are confident in their ability to grow cat grass without a starter kit, these seeds are a great choice. – Buy It


  • Chemical-free and non-GMO seeds
  • Laboratory tested for germination and pathogens
  • Germination rate is almost 100%, meaning you’ll get a thick, lush kitty garden


  • Since these seeds don’t come with any other supplies, they might not be a good choice for absolute beginners

Petlinks Nibble-Licious Organic Cat Grass Seeds Review

Organic oat grass seeds

For cats who prefer oat grass, these organic seeds have a reputation for sprouting into thick, healthy grass. They’re grown and packed in the USA. You can use these seeds as refills after purchasing a kit or start a kitty garden of your own. – Buy It


  • 100% organic
  • Oatgrass has a flavor that’s highly appealing to cats
  • These seeds have a reputation for success
  • Grown and packed in the USA


  • For absolute beginners, starting seeds without a kit may be daunting or just not worth the time

How to Grow Cat Grass

Whether you choose a cat grass kit or are using a variety of your own supplies, growing cat grass is simple, even for inexperienced gardeners. Here’s how to get your kitty garden growing.

Plant the Grass

In an indoor planter…

It’s not necessary for your planter to have drainage holes, but if you prefer, you can use a planter with holes in the bottom and a tray underneath to catch water as it drains. Doing so prevents nutrient loss from excess water and keeps the roots healthy.

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Fill your planter with potting soil until there is only about 1-2” of space between the surface of the soil and the top edge of the planter. Sprinkle the seeds over the surface of the soil, then cover with ¼” of additional soil. Add enough water to dampen the soil. After planting, you may lightly cover the planter with plastic wrap and leave it in a dark, warm place. Ideally, the planter should be kept at about 70°F. Monitor the planter to ensure that the soil remains moist. In 3-7 days, you should see the first sprouts emerging from the surface. Once the seedlings are about an inch tall, remove the plastic wrap and transfer it to a sunny location. It’s best to choose a location that’s safe from your curious cat. You’ll want to wait another week or two for the grass to reach about 4-6” in height before you let your cat discover it.

In the earth outdoors…

Sow the seeds in the spring after all danger of frost has passed. Clear out any weeds or other plant matter from the area where you intend to plant the cat grass, then smooth out the area. Sow the seeds ¼” deep in rows that are 1” apart. Lightly tamp down the soil over the seeds, then moisten the soil. Keep it evenly moist at all times. The seedlings should emerge in about 3-7 days.

Maintenance and Tips

Once your cat grass garden has gotten going, here are some tips to help it flourish:

  • Water the cat grass gently with a spray bottle as soon as the surface soil dries.
  • Trim the grass back regularly to encourage fresh growth.
  • When the grass goes yellow, replace it with new seeds. This usually happens after about 2-3 weeks, although some grasses last considerably longer.
  • Immature grass is best for cats – mature grass is rough and can be dangerous for your cat to eat.
  • Rotate multiple planters of cat grass so that your cat always has a fresh supply.

Letting Your Cat Eat the Grass

This one is pretty simple – place the planter in one of your cat’s favorite sunny spots and let them discover the fresh greens. If you grow the cat grass in an outdoor garden, the principle is the same – just wait for your cat to discover their special grass patch. Of course, not every cat will be attracted to every variety of cat grass, so it may take a few tries before you find the grass that’s perfect for your cat. In all likelihood, however, it won’t be long before you find your cat nibbling at the grass appreciatively.

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