Introduction: How to Grow Cat Grass

Picture of How to Grow Cat Grass

Cat grass is something my cats LOVE. It's a special treat for them - we try to keep it around most of the time. It keeps them entertained and happy. :D

Plus, it's super cheap and easy to grow! It'll take about a week to get it to a good height, but after that, it's a grass eating free-for-all.

More cat pictures on the last step - Big Dee and Luna spent forever grazing when I set it out, and I took waaaaaay too many photos :D

Step 1: What You Need:

Picture of What You Need:
  • a small pot to grow in
  • organic potting soil
  • cat grass seeds
  • plastic wrap
  • water
I say organic potting soil because your kitties are going to be eating this and probably digging around in it when you're not looking. Avoid potting soils with lots of fertilizer in them - the cat grass doesn't need it anyway since it won't last long. :)

Cat grass can be many different types of seed, but it's typically oats or wheat. You should be able to find it in your local pet store pretty easily! And the good news is the seed lasts forever. The seed I'm using for this is some that was given to me 5-6 years ago by a friend for babysitting her cat. :D

Step 2: Planting

Picture of Planting

Fill your pot with soil, stopping 1-2 inches from the top. Scatter a handful of cat grass seed over the top of this - I like to do one thin, even layer.

Then add a couple of handfuls of soil over the top so the seeds are covered with about 1/4 inch of soil.

Step 3: Water and Cover

Picture of Water and Cover

Water the seeds with 1/2 cup of water or so - you want the soil to be nice and moist.

Once that's done, cover the pot with plastic wrap (not too tightly - you still want a little airflow!) and set in a warm and dark location - I keep mine on top of the fridge!

Step 4: The Waiting Game

Picture of The Waiting Game

The second or third day you should see little sprouts coming up from the soil. Check that the soil is still moist every other day or so.

As soon as the grass gets to the size in the second photo, take off the plastic wrap and keep in a nice sunny place. I set mine on the back porch so the kitties would not be temped to eat it yet!

When your grass is 4-6 inches, feel free to let them have a go at it! It normally takes about a week to get to this size.

If you don't wait until the grass is high enough, chances are your cat with destroy is really quickly. :D

Step 5: Bonus Cat Photos

Picture of Bonus Cat Photos

As the resident cat lady I feel it is my duty.

Big Dee likes to put her whole face in the grass. Luna always looks like a crazed murderer when she eats it.


StaceyA15 (author)2017-11-08

My dogs love it too!!!

stanlice (author)2017-09-12

This look so catching. look forward to learn more from your instructors.

SkiNut395 (author)2017-07-30

I want to start growing kitty grass and want to know if you used a non-draining pot. I have one I want to use but there are no drainage holes. Thank you!

lbost made it! (author)2017-07-26

I am so glad you posted this! I have spent years buying pet store grown grass and felt like I wasted so much money because it would only last about a week. After reading your post, I bought cat grass seeds on Amazon, bought two planters, and have grown cat grass that is lasting about two months! Once the grass starts getting brown, it takes about three days to plant and grow another batch. I alternate planters, so my cats always have grass. At one point I was wondering why the grass started laying flat. I caught one of my cats actually laying on the grass! Both of my cats love this grass!

Jacz52 (author)2017-06-06

My last reply included a pic...I was successful with the wheat grass...I got the last 2 packets! My cat is thrilled!!

LadyDream (author)2017-06-05

My service cat, Majyk and I have a deal. Once his harness is on, we go out and he grazes on the cat grass and rolls around like he's a kitten on catnip. Then, he will willingly spend the rest of the day shopping, exercising and what ever else his silly human wants to do. My other cats love it too, but are not as insistent about it.

I can't grow it inside for some reason. I just threw 6 year old seeds it outside in my garden area and after a short while they took off. They reseed themselves and we don't have super cold winters. I think mine is wheat grass. Pretty sure all the neighbor cats are loving it too.

Wheat grass was big in crafting awhile back, I found mine in a craft store.I got a big cup of it for under 3 dollars. Still haven't used it all.

Jacz52 (author)2017-05-18

the grass seeds shown are the ones I can't find anywhere anymore! I'm thinking they are oat seeds...I have several packets of "cat grass" from different companies, different pet stores, used different containers and it just doesn't grow...I used the same method, same organic soil, but thsee seeds are lousy! My kitty LOVES her kitty grass, but now she just bites at the few blades that come up.

AmeliaE2 (author)Jacz522017-06-05

Do a search for "wheat for sprouting" they sell it for human consumption, so it should be just fine for cats as well. I just bought a pound of seeds and if they go over well I'm going to order in bulk.

AmeliaE2 (author)AmeliaE22017-06-05

Or oats or rye or barley...depending on what your cat likes!

jessyratfink (author)Jacz522017-05-18

Oh no!! You might also want to check with pet stores and see if they have any wheat grass for sale - sometimes they'll have little pots of it. Maybe your kitty would like those? :)

Jacz52 made it! (author)jessyratfink2017-06-03

hi!! Happy to report I finally found wheat grass seed packets! Hot item!! Got the last 2 packets!! Looks great!! Thank you!!

Jacz52 (author)2017-05-18

my cat grass used to look like yours, but lately can only find "cat grass" pkgs that are oat seeds (see pic...seeds are different from yours) and yes, i've had to go back to buying the already grown grass in the pet stores, but since they are fully grown they don't last much longer after purchase. I will continue my search for wheat grass seeds next shopping trip, but as I mentioned can only find the seeds in my pic. I will try the nurseries again too.

ybagr (author)2017-03-25

do I need to make holes on the bottom of my container? My has none, but not sure if it needs drainage. Thanks

jessyratfink (author)ybagr2017-03-27

Nope! The container I always use doesn't have any holes either. The grass can die if over-watered, so I just try to give it a little water every few days when the top looks dry.

mon amia (author)2017-02-14

hi :) this is the stage mine is what? trim it? just let it grow and grow til it falls over and dies? if the cat has no interest in it, are there other uses? thanks :)

jessyratfink (author)mon amia2017-02-14

I just let it grow and grow, typically! I'm not sure about other uses. I know some folks juice wheatgrass and add it to smoothies, but I've never tried it since my cats are so into destroying it. :P

mon amia (author)jessyratfink2017-02-14

ok, thanks :)

lauren12 (author)2017-01-22

Thank you for posting. You have done a beautiful job posting, photographing and sharing with others. The kitties a adorable...

Just thinking out-loud- but if they digest enough grass it may be worth it to fertilize with organic in the long run and I personally have used wheatgrass myself for smoothies. :)

SaraC97 made it! (author)2016-07-05

This is my cat grass (wheatgrass seeds) 3 1/2 days after planting the seeds. I followed your very easy directions and I started having little sprouts within 24 hrs. I had read lots of directions on different websites about how to plant my cat grass seeds and many sites said you had to soak the seeds for hours and do it again and then plant the seeds after they sprouted. Seemed like a lot of unnecessary time and trouble to go liking to do things the easiest and fastest way possible I chose your instructions and they absolutely worked!! I used organic soil & seeds from Todd's Seeds and tomorrow I think my cat grass will be ready for a fun time for my little brat kitty Ralph! I don't even care if he happens not to like to eat least maybe he might choose to attack the cat grass rather than my poor house plants!!

shadenthings (author)2015-12-19

Pet grass seed is important, we tried wheat seed , it was to harsh for our cat .
we then tried certified organic oats seed which was a lot better until we ran out of seed and couldn't find any that time year but we came across Lucy's Cat grass, Buck Oats
is more expensive than the organic oats and wheat they offer , My cats cats now turn up their noses at any thing else , but my darlings are worth it

DL Sutter (author)shadenthings2016-05-15

I bought Wheat Grass already grown, in the produce area...Bill won't even look at it until it turns brown, and then he flings dirt and all everywhere! I know he likes greens because my plants get chewed. Will try oat grass.

Nidy__ (author)2016-04-25

if a couple little cotton-like balls (mold maybe?) start appearing before the sprouts have reached the height on the second pic, should I take off the wrap - maybe I overwatered ?

Komadin (author)Nidy__2016-05-08

Not sure what exactly it looks like without a picture but if fuzzy things appear that were not there before then most likely it is mold. You may have had the plastic too tight and not enough air flow. The plastic wrap is not needed its just optional to help hold moisture.. too much moisture and no airflow BAM you get mold. good luck :p

RogerB63 (author)2016-03-08

My best friend "Gloria" loves the "Cat Grass" that I have bought for her from WalMart but I thought that I would grow my own & I bought seed from a green house on-line from Florida where I buy all of my vegetable seeds.

I'm using containers that I buy mushroom in from the market to plant my "Cat Grass" because I like the size & I have plenty of these to use. These containers are plastic & measure 5" x 6" x 2 1/2 High. Just the right size for my cat. My question is approximately how many seeds should I be planting per container ?

Thank you for your help.


RogerB63 (author)RogerB632016-03-08

Never mind. I just saw the rest of your video about growing "Cat Grass" so there is no need to reply to my question.

jessyratfink (author)RogerB632016-03-10

Ha! And I just saw this after replying. Whoops!

jessyratfink (author)RogerB632016-03-10

Honestly, I never use a specific amount! I just sprinkle the seeds on the top of the soil until it's about 50% covered, and then place a handful of soil on top and water.

I've never had any issues doing it that way! :)

ChrisP181 made it! (author)2016-02-18

So easy and so fast! Less than a week and its almost ready to be feasted on!

UtsavM made it! (author)2015-09-20

I added a gauze so that my house cats do not dig in the soil and dirty the house.. The grass has dried now but it was lush a few days back.

checkout19856748. (author)2015-09-11

OK folks,

Retailers are going to hate this post.

yourselves down to any grocery store (organic or otherwise) that has a
bulk food section. They should have a selection of raw Oat, Wheat, and
other "grain" seed. Lots of others too. Buy one kind or mix and match. I
mix them all up for varieties sake. For under two bucks (none in my
store, W pay chk, was more than $1.89 a pound) you will have enough seed
to keep you busy for a month or two. Germination is keyed by light
moisture and bright light and reasonable warmth. Soil doesn't really
matter. Good drainage is important as well after germination.In
four to seven days the seed will germinate and a few days later you can
give it to your cat. Depending on light and how you water the grass, it
will last a few days to maybe a few weeks. That is the whole project.
Great science project for the kids as well.

MikeT10 (author)2015-05-31

I tried to post earlier, but it did not work. A lot of effort for nothing. To summarize my previous attempted post ,cat grass is very simple to grow, in most climates. The important thing to remember is, most cat grass here in the US is Avena Sativa, (Oat Grass) and not wheat grass. Although wheat grass can satisfy many cats, and provide the benifits of fresh greens, many cats don"t like it. Try Oat grass if your cat does not like the wheat grass that is sold as cat grass in many locations. My cat (OK, My girlfriends cat) will not eat wheat grass. But he will bite me if I try to give it to him. So try Avena Sativa if the regular stuff does not work.

DestinyP (author)2015-04-14

I dont have an image with my two cats with the cat grass but i made it, yet the wont eat it only stiff anf rub but oh well at least its something maybe it needs to be taller

Mrs Rozeboom (author)DestinyP2015-04-24

Hi Destiny, I came here looking for a solution to the same problem. I have only have one long haired cat but both have a hairball problem because one constantly grooms the other. I grew some cat grass and my two kitties wouldn't touch it either and it was growing really high. As I was reading the posts, someone mentioned catnip and then the light bulb went on over my head. I remembered I had some dried catnip so I sprinkled it on the cat grass and now they're both going to town chewing the cat grass and very happy too!

Suzanne in Orting (author)2013-06-04

I love this idea. One of my cats has hairball issues, the other doesn't. I have two thoughts though:

1. What about using a plastic liner to help stave off rusting of the pot. Even coated pots will eventually rust and the damage will be hidden on the inside until too late.

2. If you place a layer of gravel in the bottom, it helps reduce the chances of over-watering since it gives a place for the extra water to go.

The outside bird cage also inspires me to come up with a way to keep my babies out of the pot itself.

Lovely Idea,

Suzanne in Orting, WA

Or you could use a plastic pot /container to grow it in

crashinaz (author)2015-02-03

Hello! How long does the grass last? Seems to turn brown quickly....not enough light maybe? I got a new batch going but hate to waste the old batch. Do seeds resprout? The grass that turned brown I snipped low and now don't know what to do with it. Lolol

jessyratfink (author)crashinaz2015-02-03

Normally around two weeks for us! Between the cats constantly chewing on it and the lack of nutrients in the soil it never lasts very long. :)

Composting the old batch is a great way to get rid of it!

PattyH3 (author)2015-01-24

How often are the seeds supposed to be water and what amount?

jessyratfink (author)PattyH32015-01-26

Before they sprout, just make sure to keep it nice and moist, but not drenched. I normally just check it every morning to see if the soil is light or dark.

Once it's sprouted and growing, I'd say a light watering every couple days is good - maybe 1/4-1/2 cup depending on the size of the container you use and how much drainage you have.

ReneeN (author)2015-01-19

Do you use seed starting soil?

jessyratfink (author)ReneeN2015-01-26

Nope! Just an all purpose potting mix. We normally use Happy Frog soil for everything.

deebeebrez (author)2014-09-12

OH NO, I'm a total failure at Cat Grass!! Used a plastic container about 4" high X 5" diameter, punched holes in the bottom, filled with organic seed starter soil, left 1/2" room on top (maybe too much?), then soaked the soil. Sprinkled way more seeds than you show you did on the top. Put 1/4" of soil over seeds, gently watered again. Covered, put in a non lit place. It took more than a week to see any grass at all. What finally emerged (top off of course) was VERY sparse. Yours looks so lush and you used far less seed than I did. OOOOOHHHHH, what am I doing wrong?

jessyratfink (author)deebeebrez2015-01-26

It could be that your seed was bad! Super old seeds or those that have gotten too hot or cold tend to lose their ability to sprout. I would try it again with a little less water and fresh seed. :)

Unechabio (author)2014-04-16

I need help!!!!!!!!!!! I am very worried!!!! I bought some cat grass today from a farmers market and my cat likes it. But, my problem is that he likes to pull out the grass which pulls out the seed and the roots of that sliver of grass, and eats EVERYTHING! Is that okay or should I cut the grass for him so he doesn't eat the seed/roots/a little tiny bit of soil (organic)? Thank you in advance for your help!

areyouolsen (author)Unechabio2014-05-18

It won't hurt him. If it really bothers you, though, wait until the grass grows a few days more to let the roots establish themselves a little more.

MissAlly14 (author)2014-04-04

My cats LOVE this stuff. I've got 2 questions for you though. How do you keep it from getting moldy? I think I might be adding too much water but I feel like it dies so quickly if I under-water it. Also, how do you keep it alive? After my cats chew it down pretty far, it starts to die and turn brown.

equusbeth (author)2014-03-27

Thank you for this!! I also had to comment because my Orbit looks a lot like your white kitty with the orange on her forehead and I've never seen another short haired cat that looks like ours :) He's going to love this grass!

jessyratfink (author)equusbeth2014-03-27

Twiiiiiinss!! He's so cute. Love that sassy look :D

equusbeth (author)jessyratfink2014-03-28

Thank you!!!! He was a bit annoyed that I came in to disturb his nap to take a picture, but he's usually super easygoing and friendly :) We found him as a stray at five weeks old so it's super fun to see another kitty out there who looks like him!

Off to go grow some grass for him! Thanks again for a great instructable!

marionpixie (author)2013-12-28

hello, so cats can eat this grass right.

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Bio: I work at instructables by day, and turn into a stitch witch by night. follow me on instagram @makingjiggy to see what i'm working ... More »
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