Rated 4.9 out of 5
Based on 49 reviews

Seed Starting
Superstar

Be your best plant parent with our seedling mix powered by biochar. Scientifically crafted for germination & propagation.
better-homes-and-gardens-logo
real-simple-logo
Architectural Digest
🪴 Microbially active, nutrient-rich formula
🌎 Clean, peat-free, plant-based inputs
💚 Rigorously tested to be easy and reliable

Organic Ingredients

BIOCHAR

A horticultural charcoal that increases nutrient retention, hosts beneficial microbes, and stores carbon in the soil.

MYCORRHIZAE

Beneficial microorganisms that form a symbiotic relationship with plant roots, allowing the plants to absorb more nutrients.

WORM CASTINGS

Nutrient-rich organic matter produced by worms that provide plants with essential nutrients.

Learn More
Write a Review
average rating 4.9 out of 5
Based on 49 reviews
  • 5 Stars
    43 Reviews
  • 4 Stars
    6 Reviews
  • 3 Stars
    0 Reviews
  • 2 Stars
    0 Reviews
  • 1 Star
    0 Reviews
100% of reviewers would recommend this product to a friend
Customer photos and videos
Open user-uploaded photo and review in a modal Open user-uploaded photo and review in a modal Open user-uploaded photo and review in a modal Open user-uploaded photo and review in a modal Open user-uploaded photo and review in a modal Open user-uploaded photo and review in a modal
49 Reviews
Reviewed by EeeJayCee
Verified Buyer
Review posted
I recommend this product
Rated 4 out of 5

I was REALLY skeptical about this seed starting mix…

...upon opening this bag and seeing the makeup of it. First off, it is very, very black. I've never seen a soil mix so black. Is it the biochar?? It is also very well-draining; the water goes right through because it doesn't appear to have anything in it to hold onto the water (vermiculite, coco coir, peat moss). I get that it has all the good stuff that you want in a seed starting mix (compost, worm castings, mycorrhizae). But the very large pieces of bark that you find in this (and it's throughout the whole bag; it's not just a matter of the finer components settling to the bottom and then the bigger, "lighter" components remaining at the top) made me really question whether this would even work as seed starter. But I'm taking a risk, because if I give this seed starter a couple of weeks and still nothing grows, that pushes my seedlings that much further into the short spring growing season I have where I live (desert of SoAZ). At the same time, I've been trying to start seedlings indoor for a few seasons now, and often unsuccessfully, even with the finer, lighter seed starting mix of other brands and mixed with worm castings and coconut coir, mind you. Even that has given me choppy results, so at this point, really, what do I have to lose (again)? Half of the time seeds will germinate "on time," the other half of the time the seeds take forever to germinate.

Well, it's been only 3 days and I am VERY pleasantly surprised. Of the 15 different seedlings I planted, about 4 of…

Loading...
Open Image by EeeJayCee in a modal Open Image by EeeJayCee in a modal
Was this helpful?
Reviewed by Stubird
Verified Buyer
Review posted
I recommend this product
Rated 5 out of 5

Seed Starter Mix Without Soil

I start veggie seeds every February using starter mix without soil. Many people don't realize that everything that seedling needs for the first few weeks is right inside the seed. No nutrients are taken up from the surrounding soil until feeder roots are well developed. This seed mix is great because it's sterile -- no fungus or bacteria to damp off the baby plant -- and it has a light nutrient content that nourishes the seedling after its roots finally start to develop. It holds water without getting soggy or heavy. So you can start your seeds in 3 inch pots if you want, no transplanting until you're ready to put them out in the garden in April.

Loading...
Was this helpful?
Reviewed by Gail
Verified Buyer
Review posted
I recommend this product
Rated 5 out of 5

The best soil - ever - for my microgreens

At the recommendation of the Rosy Soil people I bought the seedling soil for my microgreens. I love the rich dark color. I had a feeling that the bio char and worm castings would be beneficial and they are. My micro greens were ready 2 days earlier than usual. My husband and I both felt their flavor was improved!

I love that this soil does not have that awful chunky white rocky stuff in it - forgive me, I forget what it's called but it's in most soils. With Rosy Soil I'm getting 100% growing medium that's rich and robust.

Historically one uses some sort of seaweed fertilizer for micro greens. I have not felt the need to do this with my Rosy Soil - which is nice, it's one less thing to fuss with, and one less expense. I'm getting highly nutrient dense micro greens with just this great soil.

Loading...
Was this helpful?
Reviewed by NR
Verified Buyer
Review posted
I recommend this product
Rated 5 out of 5

Nice packing and good quality soil

This is a resealable bag which is useful to me to properly store the unused soil for later. As advertised I noticed less transplant shock for my pothos which I propagated in water first before transplanting in a pot. My plant looks healthy.

Loading...
Open Image by NR in a modal Open Image by NR in a modal Open Image by NR in a modal
Was this helpful?
Reviewed by almiele
Verified Buyer
Review posted
I recommend this product
Rated 5 out of 5

Great seedling soil!

I love this soil! Holds moisture well especially for germinating seeds! Biggest plus is the organic additives. No peat moss or synthetic fertilizers whatsoever. My seedlings started to germinate in three days and sprouted!

Loading...
Open Image by almiele in a modal Open Image by almiele in a modal Open Image by almiele in a modal Open Image by almiele in a modal Open Image by almiele in a modal
Was this helpful?

US VS. THEM

Footprint Carbon Neutral + 3.38 kg
Ingredients Premium, natural-based, and eco-friendly Low-quality, non-renewable, and synthetic
Packaging Resealable and made from recycled materials Flimsy plastic made from fossil fuels
Formulation Designed by scientists to naturally support healthy plant growth Designed to cut costs and drive profits

FAQs

Peat moss has been a common ingredient in commercial potting mixes since the 1960s. However, it's obtained by extracting peat bogs, which are vital ecosystems that store carbon. At Rosy, we believe there's a better way. So, we've developed our blends with alternatives that are effective and sustainable.

Rosy’s indoor potting soil is all-natural, peat free, and made from biochar. 

We’ve consciously sourced our ingredients not only because they’re great for your plants but also because they’re good for our planet. 

Unlike traditional potting soil ingredients that are environmentally taxing, our biochar potting mix only contains natural and carbon-negative amendments.

Read additional information about Our Mission.

We use carbon-negative, organic ingredients to create the best indoor plant potting mix.

Typically, these organic materials are sent to a landfill, where they release methane and CO2 — two potent greenhouse gases. But by redirecting these organic materials from landfills and stabilizing their carbon structure, we prevent the release of those greenhouse gases.

Essentially, we turn our house plant soil into a carbon sink, which means it helps to remove CO2 from the atmosphere.

Discover more about what we mean by Earth Positive on Our Mission page.

Yes! You can add Rosy to your current houseplant potting soil — whether it’s an inorganic or organic potting soil mix, cactus or orchid mix, or otherwise. 

Doing so will help you refresh your old soil and revive its benefits for plant care. 

Alternatively, you could directly replace your current houseplant soil mix with Rosy. 

You can use Rosy indoor soil for plants like: 

Tropical plants (monstera, money tree, ZZ)

Philodendron

Pothos

Trailing plants 

Ferns

Why is it the best soil for these plants?

Rosy is a well draining potting soil, offering an optimal balance of drainage and moisture retention. Plus, it’s fertile and supports beneficial microbes, which help your indoor plant thrive.

Our 8 Quart bag of Rosy indoor potting mix will fill:

4 to 6 medium 6" pots

Our 4 Quart bag of Rosy indoor potting mix will fill:

2 to 3 medium 6" pots

And unlike traditional indoor potting mixes, you won’t need to replace the soil every year due to compaction.