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can succulents grow in potting mix

can succulents grow in potting mix Molly's Gritty Mix for Cactus & Bonsai

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Description

can succulents grow in potting mix Molly's Gritty Mix for Cactus & BonsaiQuick answer: what is Molly's Succulent Mix? For: succulents, cacti, bonsai, Haworthia, Echeveria, Sedum, Jade, and any arid environment plant. What's in it: high mineral gritty blend of pumice, lava rock, and crushed bark. Low organic matter by design. Why it works: succulent roots are built to drink fast and dry out fast. The gritty structure drains in seconds and holds zero standing water, so roots don't rot. Pre rinsed and pH balanced straight

Quick answer: what is Molly's Succulent Mix?

  • For: succulents, cacti, bonsai, Haworthia, Echeveria, Sedum, Jade, and any arid-environment plant.
  • What's in it: high-mineral gritty blend of pumice, lava rock, and crushed bark. Low organic matter by design.
  • Why it works: succulent roots are built to drink fast and dry out fast. The gritty structure drains in seconds and holds zero standing water, so roots don't rot.
  • Pre-rinsed and pH-balanced straight from the bag. No salt flush required.
  • Bonsai-safe. The grit profile matches what serious bonsai growers blend by hand from akadama, pumice, and lava.

More plant-specific guidance: Ultimate guide to growing succulents indoors, Potting soil vs potting mix.

Succulents and cacti evolved in arid, mineral-rich environments where water moves through gritty substrate in seconds. Their roots are built to drink fast and dry out fast. Standard potting soil holds moisture for days, suffocates the roots, and rots them from the bottom up. The fix is a high-mineral, low-organic, gritty mix.

Molly's Succulent Mix is engineered to mimic native desert and rocky-slope substrates. A blend of pumice, lava rock, and a small amount of organic matter that drains in seconds and forces the soak-and-dry watering rhythm succulents need.

The gritty-mix philosophy

Most "succulent soil" sold at garden centres is regular potting soil with sand mixed in. That's not what these plants want. The right mix is roughly 70% mineral aggregate (pumice and lava rock) and 30% structural organic (coir, charcoal). Water hits the surface and runs through within seconds. Roots get a brief, intense drink, then dry conditions for the next 1 to 2 weeks. That's how succulents stay alive in pots.

What's in the bag

  • Pumice (volcanic, lightweight): the mineral backbone. Holds a tiny amount of water inside its porous structure, but lets the rest drain freely.
  • Lava rock (red lava): chunky drainage and heat retention. Roots love the warmth differential it creates.
  • Coir fiber (small percentage): just enough organic to retain a little humidity and prevent the mix from drying to a brick. Not enough to compromise drainage.
  • Horticultural charcoal: filters salts from tap water (succulents are surprisingly sensitive to mineral buildup).
  • Calcitic limestone (trace): buffers pH to the slightly alkaline range (6.5 to 7.5) most desert succulents prefer.

Low peat content, no worm castings (succulents don't want a nutrient flush), no commercial fertilizer. The whole mix is intentionally lean.

Plants this is for

Designed for succulents and cacti:

  • Echeveria, Sedum, Crassula (jade), Sempervivum: the classic rosette succulents.
  • Haworthia, Gasteria: they prefer slightly more shade but want the same gritty drainage.
  • Aloe (vera and others): medicinal succulents, this mix prevents the rot they're prone to in heavier soils.
  • Most cacti: Mammillaria, Echinopsis, Opuntia, San Pedro, golden barrel.
  • Lithops (living stones): require fast drainage to stay alive year-round; this mix is well-suited.
  • Bonsai with high drainage needs: juniper, pine, and certain deciduous bonsai work well.
  • Caudex plants: Adenium, Pachypodium, and other swollen-stem species that need fast drainage at the base.

Not for: tropical "succulent-looking" plants like Hoya, Christmas cactus (Schlumbergera), or Easter cactus, which actually prefer humidity-retaining mixes. For those, use Molly's Aroid Mix.

Watering with gritty mix

The right rhythm: soak and dry. Water deeply, then wait until the mix is bone-dry before watering again.

  1. Wait until the top 2 to 3 inches feel completely dry. For most succulents in standard 4 to 6 inch pots, that's every 10 to 21 days indoors.
  2. Water until liquid runs clearly out the drainage holes. Don't dribble. Soak.
  3. Discard any water in the saucer. Do not let the pot sit in standing water.
  4. Wait. The plant will let you know when it's thirsty (slight wrinkling of leaves, lighter pot weight).

In winter, water roughly half as often. Most succulents go dormant or semi-dormant.

FAQ

Why is this so heavy compared to other succulent soil?

Because it's mostly minerals, not peat or coco coir. The weight is what makes it work. Light bag means light drainage, which is the opposite of what succulents need.

Can I use this for bonsai?

For tropical bonsai, no, they want a moisture-retentive aroid-style mix. For drought-tolerant bonsai (juniper, pine, certain deciduous species), yes, this mix or a 50/50 blend with finer organics works well.

Will the mix break down or stay porous over time?

Stays porous. The mineral components (pumice, lava rock, charcoal) don't decompose. The small organic fraction breaks down slowly. Most succulents in this mix can go 2 to 3 years before repotting.

Should I add fertilizer?

Sparingly. Succulents are slow growers and don't need much. A diluted (~1/4 strength) cactus-specific fertilizer once during the growing season (spring) is plenty for most species.

Packaged in a heat-sealed resealable bag. New formula released April 2026, see the formula release announcement for details on what changed.

Related care guide

Watering, light, and repotting fundamentals for succulents and cacti.

→ Read the Succulent & Cactus Care guide

Have questions? Read the Molly's Succulent Mix FAQ for detailed information on watering, repotting, and which succulents this mix works best for.

New: the complete soil guide

Not sure if you need cactus soil or succulent soil? They are the same thing. Read: Best Soil for Succulents and Cactus →

Not sure which mix your plant needs?

Take our free 60-second Soil Finder quiz → Diagnose the problem and get the exact Molly's mix and amount for your plant, plus 10% off.

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Claire53
Whiting, US
★★★★★ 4
Very pretty cookware
Size: 11-Piece Set
This is nice quality cookware for a great price. I have seen cooking shows that tell how to cook in stainless steel without it sticking. Unfortunately, my food still sticks. If I use a lot of oil, it isn’t so bad. One cooking show host says if you get it real hot before you add the oil, it won’t stick. It sticks. I am trying to get away from using Teflon because they say we have a lot of Teflon in our bodies from our cookware. I still go back to my Teflon a lot. But the cookware is very pretty, a nice weight, and cleans up fairly easily. I do soak the skillet before I clean it. I don’t have to do a lot of scrubbing. The sauce pans are great.
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Reviewed in the United States on June 10, 2025
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BookCase
West Palm Beach, US
★★★★★ 5
Cooks well, cleans easily
Size: 15-Piece Set
Bought this to replace old nonstick cookware. Looks good and not too heavy. Pot handles are cool enough to hold near the ends but tend to warm up close to the pot itself. Using on a gas range – heat spreads quickly and cooks. Best on low heat. Some sticking problems with food like cereal, lower heat advised. Glass lids are very handy with steam outlet. Have not used all of them yet, but they store and stack easily and I was looking for a good size stock pot and this should suffice. Not as heavy as other stainless steel cookware. Price reasonable for the number of pieces included.So far I am very pleased with this purchase.
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Reviewed in the United States on January 15, 2026
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Heather D.
Houston, US
★★★★★ 5
Heat up well before use for "non-stick".
Size: 11-Piece Set
I really l Iike these stainless steel pots. I had to learn the trick to using them, and that is to make sure they are heated up properly before using. This makes them "non-stick" and your food won't stick to the bottom of the pot, especially if you're frying it. Also follow the manufacturers instructions and "season" the pots after you receive them, by coating the insides with oil and heat them up. They cook really well, are light weight, easy to use, easy to clean, very sturdy, shiny surface, and holds heat after you've finished cooking. Also, don't use harsh scrubbers in them because it will scratch the surface. Scotch Brite Scour Pads work well in these pots. If you scratch them, use the green Scotch Brite Scour Pads to polish the scratch marks out. Enjoy them!
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Reviewed in the United States on April 17, 2026
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Sophia
Belleville, US
★★★★★ 5
EXCELLENT DEAL.
Size: 5-Piece Set
These are authentic food grade, stainless steel pots and pans sold for ten times more via other companies. I did the research and the part where we cook or boil is stainless steel. The core is aluminum (we don't get that when we eat) and the outside is stainless steel again. Beware, though, they are SUPER HEAVY. Lift weights before picking them up! We love them. Wish we'd bought them sooner. You can't cook on high with them, though, b/c it will burn the food, since it isn't nonstick. We've learned to cook low and slow. No need to scrub so much. That's the only drawback. Great quality!
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Reviewed in the United States on December 3, 2025
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Andi R
Natrona Heights, US
★★★★★ 4
Yeah 😎 get em why not? lol
Size: 5-Piece Set, Size: 5-Piece Set
Paid $85. These feel nice, look nice, these are heavy but shiny, quick warmup. These are heavy. The lids won't lift while cooking or make sounds for air or bubbles which is good. It worries me that the one pot I use everyday the big one, the glass lid starts making cracking sounds as if about to break... Weird... Every time I cook it feels as if I'm waiting for something bad to happen and ruin my dinner. Overall, giving 3 stars, due to the glass cracking thrill, and the bottom of the pots give weird stain spots after cleaning. I used aluminum foil and little water to remove those stains. Well... Dark dirt came out but now these are back to shining. So it is burnt something perhaps the olive oil I cook with? But yeah one must foil clean these pots at least once a week as it takes effort to clean those bottoms... Is there a product that resolves this issue? I guess I'm too young for this 😂 I would recommend if you like fancy at a good price. Ahh and that the flat one is the worst for egg frying, I tried 2 times once w olive oil and then with coconut oil both times fried eggs were really sad 😢 waste of eggs. Anyhow. ... Do the math and if you like 'em just get 'em.
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Reviewed in the United States on November 22, 2025

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