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double potting succulents

double potting succulents Molly's Gritty Mix for Cactus & Bonsai

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Description

double potting succulents 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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Conant 15
Houston, US
★★★★★ 5
Great book
Format: Paperback
I worked in a setting where I was the only nurse for hundreds of inmates in a Max prison. I used this book to assist me in providing care to patients with their emergencies. It helped me decide how to handle situations where I had to intelligently explain a medical issue to a on call MD or chart in a correct manner. This was my own personal book and glad to have it. I believe I initially found the title from a ER MD who recommended it. This is the updated copy, I gave my old copy to a non medical neighbor who found it useful.
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Reviewed in the United States on June 11, 2022
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Insomnia
Belleville, US
★★★★★ 5
Excellent
Format: Paperback
This book is a must have for ER or urgent care. I work in an emergency medicine and can treat septic shock in my sleep but there all kinds of things not that serious that still come in. Some excellent procedural tips. Have given copies to students.
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Reviewed in the United States on July 22, 2022
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anca n.
Charlottesville, US
★★★★★ 5
PA working in Immediate Care
Format: Paperback
I'm a PA and work in Immediate care, this is a great reference book for procedures! Especially those that you don't do daily and need a refresher on before proceeding. I would highly recommend - it is well written, thorough, and covers procedural skills as well as treatments and different options to consider.
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Reviewed in the United States on September 28, 2021
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Theodore Zachariades
Lowell, US
★★★★★ 5
Nancy Pearcey finds true toxicity in the war on men!
Format: Hardcover
Nancy Pearcey has done it again. This work will prove to be a harbinger for a re-evaluation of the war on masculinity current in the Western world. Many are joining the bandwagon and spouting the mantras of "toxic masculinity." Particularly, that breed of “manhood,’ which is perceived to have its origins in the Church, is quite repugnant. Pearcey turns the tables on these folks to show that toxicity is, in reality, their own atmosphere of existence. With the use of widespread research and surprising statistics, Nancy Pearcey has provided in this volume a veritable course in gender issues. The work includes history, cultural evaluation, biblical insight, philosophical sophistication, and balanced classical apologetics. Far from being a partisan theological tirade, the book will bring needed clarity to people on various points on the spectrum. At the core of her thesis is distinguishing the authentic manly characteristics that throughout history have been applauded and found so necessary for the flourishing of Western civilization in contrast to the bravado and supposed "real man" macho type that is the stereotypical target of the so-called feminists. Here, in particular, Pearcey uncovers acute analysis and recorded available statistics for any that would do the spadework. For example, from the research of one study, entitled 'The Pentecostal Gender Paradox,' she shows "that evangelical forms of Christianity benefit women by 'morally restraining the traditional autonomy of the male and the selfish or irresponsible exercise of male power' " In another study, published in the New York Times, it was concluded that "the happiest of all wives in America are religious conservatives . . . Fully seventy percent of wives who hold conservative gender values and attend religious services regularly with their husbands have high quality marriages." Pearcey is so enthralled, she says, "Did you catch that? Let me repeat it . . ." In addition, the satisfaction that women in this demographic have extends to the bedroom as well. Due to these widespread findings, Pearcey says, citing Brad Wilcox, "Academics need to cast aside their prejudices about religious conservatives and evangelicals in particular." A telling conclusion! In this reviewer's opinion, the chapter on the Pioneers and Puritans was outstanding. No spoiler alert. Get the book and read it for yourself. This chapter alone is worth the cost of purchase. The discussion on the industrial age and the transition for men to become absentee fathers was a helpful reminder that political and economic emancipation brings with it some unexpected consequences. The Father, as the provider, now becomes engaged in a manner of individual competition for prestige and advancement. No longer surrounded by loved ones in a struggle to eke out a living in an agrarian world, the industrialization process reduced men to cogs in a machine. Profit for the owners of the means of wealth production, the proverbial bottom line, now was all that really mattered. As Pearcey elegantly puts it, "The new workplace fostered an economic philosophy of individualism, where workers were treated as so many interchangeable units to be plugged into the production process, each struggling to advance himself at the expense of others." Most importantly, Pearcey catches that underlying and emerging contrast in the following comment, ". . . the conflict between work and family did not involve just juggling time demands but also transitioning between two contrasting sets of character traits." Here also, Pearcey draws on her prior book Total Truth to examine the resultant separation of spheres where men began functioning differently in actual practice depending on what and where they were acting out their divided lives. There is so much ground covered in this fine work. I cannot recommend it highly enough. No doubt, as this reviewer found the occasional issue that would be worded differently or even contrastingly, the bulk of the book is endorsed wholeheartedly. Thank you, Nancy Pearcey for another book that will become a classic. I had received access to a pre-published edition of the book. I was under no compulsion to give a favorable assessment. Theodore Zachariades.
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Reviewed in the United States on June 27, 2023
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The Rebecca Review
Battle Creek, US
★★★★★ 5
An Exploration of Why Men are Evolving into Who they are Today! Well Researched and Convincing!
Format: Hardcover
What does a top intellectual woman have to say about the journey men have been on since the beginning of time? Nancy R. Pearcey understands the current secular view of masculinity and has the biblical understanding of how men can find true freedom in being who they were meant to become – good men who are willing to sacrifice for their wives and children. Some of the questions this book answers include: Who are the most loving men in America? What are the top positive traits of good men? What is the difference between a good man and a real man? Why should you attend church if you want a chance at a happy abuse-free marriage? How has the role of women changed over the centuries? Why is praying together as a couple such a major help in marriage? Does the health of the marriage rely on the husband or wife? While this book focuses mostly on men and what has happened to them as they have evolved into who they are today, there is also a lot of information on what has occurred to women. Nancy R. Pearcey beautifully brings clarity to Eve's role in Adam's life from the beginning. What struck me most deeply while reading was that men really respond to societal expectations. As the world had changed men have seemingly adapted in tandem and have pursued different directions than some women who love house and home would prefer. The motivation of men seems to be to maintain their own masculinity at any cost! There is an especially good section on how men should be encouraged to be good fathers as it benefits them as much as the child and helps to prevent suicide. There is also a chapter on the problem of abuse in marriage. This alerts women to the situation they may face in the future if they take no action or leave without protections in place! The section addresses suffering as a Christian woman but the author doesn't take the problem lightly and advises women to leave if they are in danger. It seems to me that ideas cause civilization to crumble or move forward with renewed power. Usually it is truth that sets people free whether they find it individually or collectively. This is a book who's time has come. I was so happy to read about the reality of men who take marriage seriously and also wives who show a meek and calm spirit leading their husbands to God. So this book is a history of men and why men are viewed either positively or negatively in our culture. This is one of the most important books you could ever read. I highly recommend it to pastors and counselors, men and women. The more people that read it, the more good it can do! Thanks for reading! :) ~The Rebecca Review
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Reviewed in the United States on November 1, 2023

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