Not every soil is right for growing cat grass—especially if you’re growing it indoors. To get the best growth from your cat grass seeds, it’s best to grow them in an organic soil that is rich in nutrients. You’ll want a soil that can keep it’s moisture and allow for good air flow. However, it can be a challenge when it comes to picking a proper brand. In the effort to help you get started, I created a brief list of premium organic potting soils for indoor plants—with descriptions next to each brand—to make your search easier.  I hope this helps narrow down your search.

6. Miracle Gro,
Nature’s Care
Nature’s care provides a compressed soil that expands when water is added—Which is great for shipping and storage. Miracle Gro claims that it’s soil expands up to 3x it’s original size, holds 33% more water than average potting soils and is completely organic. It contains a blend of kelp meal, earth worm castings, bone meal and alfalfa meal.

5. Foxfarm,
Ocean Forest Potting Soil
Foxfarm provides a premium organic soil blend that is said to have everything your plant needs. Ready to use right out the bag, this soil is a blend of bat guano, pacific northwest sea going fish, crab meal and earthworm castings. It also contains sandy loam, sphagnum peat moss and forest humus. This soil is ideal for indoor container plants and is sold in 12 quarts. It has a 4 1/2 star review rating and is a highly recommended Amazon Choice for organic soil purchase.

4. Hoffman,
Purely Organic Potting Soil
Hoffman’s Purely Organic Potting Soil is said to keep it’s moisture longer, so it doesn’t require as much watering. A purely organic mix, it’s good for growing organic vegetables, flowers and grass. The bag contains 4 quarts and is enough to repot your plant, use in hanging baskets or gardening trays.

3. Dr. Earth,
House plant potting soil
Dr. Earth House plant potting soil is a 12 qt. premium potting soil that is designed to be used for most indoor plants or grass. It is richly fertilized with soybean meal, seaweed extract and organic nutrients. It’s manure free, odor free, pet/people safe, 100% organic and naturally handcrafted, to suit your indoor potting needs.

2. Organic Plant Magic,
Compressed Potting Soil
With 4 1/2 stars for Amazon reviews, Organic Plant Magic presents a compressed soil that claims to expand seven times larger when water is added to it. A soil like this is good for storage and is easy to transport. It’s 100% natural and safe for pets and children. The mix uses coconut coir, worm castings and helpful bacteria to aid in the nourishment of your plants.

1. Smart Naturals,
Happy Frog Potting Soil
Happy Frog Potting Soil contains microbes and fungi to help feed your roots and break down organic matter. It has earth worm castings, bat guano manure and composted forest humus to give your plant a super-boost. Straight out of the bag it’s ready for use and designed to support fruit and flower production. Good for both indoor and outdoor use.

In conclusion, this is by no means an exhaustive list of what’s on offer in the organic soil market, but it’s definitely a start. There are many brands that have different blends to choose from. However, as long as you find a soil with the proper nutrients, that can retain moisture and allow for a good flow of air, you’re headed in the right direction. If you’re growing cat grass, an organic blend is recommended. Lastly, it’s important that you can easily find exactly what you’re looking for and it’s my hope that this list can do that for you. Thanks for reading.