SuperMoss (01999 Agromin Organic Recycled Green Material Pot

The Verdict

The Short Version: This isn’t your big-box-store potting soil. SuperMoss’s Agromin mix is a recycled green waste product that behaves more like a premium blend — dark, crumbly, and almost fluffy — but the 5-quart size will surprise you if you’re used to 8-quart bags at the same price point.

What’s Actually in the Bag

The packaging is straightforward: a 5-quart resealable bag (roughly 9 x 5 x 3 inches when compressed) of dark, fibrous compost. The ingredient list confirms what the name suggests — recycled organic green material, which means yard trimmings, leaves, and plant matter that’s been composted down. There’s no peat moss, no perlite, and no synthetic fertilizer added.

Texture is where this stands out. It’s noticeably lighter than conventional potting soil — you can squeeze a handful and it holds shape briefly, then crumbles. The particle size is inconsistent: some fine, sifted material, but also visible bark chunks and small twigs. That’s expected from a compost-based product, not a defect.

Real-World Performance

I tested this on a Monstera deliciosa and a collection of pothos cuttings over four weeks. The moisture retention is the headline feature. In a standard 6-inch terracotta pot, the mix held moisture for roughly 3–4 days before the top inch dried out — compared to 1–2 days with a peat-based mix. This is a genuine advantage if you travel or tend to underwater.

Drainage is adequate but not exceptional. The compost structure creates natural air pockets, and I didn’t see water pooling on the surface after watering. However, it’s not as free-draining as mixes with added perlite or pumice. If you’re growing succulents or cacti, you’ll want to amend this with 20–30% coarse sand or perlite.

The odor claim holds up. No earthy compost smell, no ammonia — just a neutral, almost clean scent. One Amazon reviewer noted, “I was expecting that classic ‘dirt bag’ smell. There was literally nothing. It’s the first potting mix my wife didn’t complain about.”

What Buyers Consistently Praise

Across the 204 ratings, three themes dominate. First, the light, airy texture — multiple reviewers compared it favorably to Miracle-Gro’s dense moisture-control formula. Second, the pH neutrality; several indoor gardeners reported no leaf burn or yellowing after transplanting sensitive ferns and calatheas. Third, the sustainability angle — buyers who compost at home appreciated that the bag itself is recyclable and the contents are genuinely recycled.

Where It Falls Short

The 5-quart volume is the biggest practical issue. It’s roughly 20% less than comparable bags from FoxFarm or Black Gold at the same price. You’ll get two 6-inch pots filled, or one 10-inch pot with a little left over. If you’re repotting multiple plants, this gets expensive fast.

The wood content is also worth flagging. Those visible bark chips break down slowly and can tie up nitrogen in the soil as they decompose — a minor issue for established plants, but a real problem for seedlings or cuttings that need steady nutrients. One reviewer put it bluntly: “Great for my snake plant, terrible for my herb seeds. I had to pick out the chunks by hand.”

Who Should Buy This

• Houseplant owners with 3–5 pots who want a reliable, low-odor mix for tropicals and aroids
• Organic gardeners who prefer recycled inputs over peat-based products
• Underwaterers who need more forgiveness between waterings

Skip it if you’re starting seeds, growing cacti/succulents, or repotting a large collection in one session.

FAQ

Q: Can I use this directly, or does it need amendments? For most houseplants, use it straight. For succulents, add 25% perlite. For seeds, sift it first and mix with 50% seed-starting mix.

Q: How long does a 5-quart bag last? Two 6-inch pots, one 10-inch pot, or roughly 20 4-inch nursery pots. Plan accordingly.

Q: Does it contain manure or animal products? No — it’s strictly plant-based green waste. It’s safe for indoor use and won’t attract gnats if you let the top inch dry between waterings.

The Verdict: 4.2/5 — Buy it if you want a genuinely sustainable, low-odor mix that forgives missed waterings. Skip it if you need high volume or precise particle consistency for seed starting. This is a quality product with a packaging problem, not a quality problem.

Where to Buy

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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.