String of hearts needs a mix that drains freely without drying into dust the moment you water. I rank DUSPRO 8-in-1 Aroid Mix first for its airy, chunky structure, Craft Organic Houseplant Mix as the most balanced small-bag option, and Back to the Roots Succulent & Cacti Mix for growers who prioritize quick drainage. The tradeoff is straightforward: chunkier blends can need more frequent watering, while finer or peat-based mixes hold moisture longer and may need amendment for this trailing succulent.
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My picks are judged for string of hearts—not for how many unrelated houseplants a bag claims to serve. I focus on drainage, airflow around roots, moisture balance, and how much adjustment the mix may need. A pot with drainage holes and a watering routine suited to your home still matter; no soil can compensate for a container that stays waterlogged.
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Key Takeaways
- DUSPRO 8-in-1 is my best match for growers who want a ready-made, airy blend with bark, pumice, and other coarse components.
- Craft Organic Houseplant Mix balances chunky drainage with worm castings and biochar, though its 2-quart bag suits a small repot more than a collection.
- Back to the Roots Succulent & Cacti Mix offers the fastest-draining direction here, but its succulent-focused formulation may call for extra feeding.
- Rosy Soil is a peat-free, resealable general houseplant mix; I would check its moisture behavior before using it unchanged for a string of hearts.
- Miracle-Gro Houseplant Mix is the least specialized choice because it contains peat and fertilizer; use it only if you are comfortable adjusting its drainage and watering.
| DUSPRO 8-in-1 Aroid Potting Mix, Pre-Mixed Chunky Soil, Airy Blend, 2 QT |  | Best Overall for Airflow | Brand: Duspro | Product type: Pre-mixed aroid and indoor plant potting mix | Listed size: 2 QT | VIEW ON AMAZON | See Our Full Breakdown |
| Craft Organic Houseplant Potting Mix, 2QT |  | Best Balanced Small-Bag Pick | Brand: Grow Queen | Size: 2 QT | Item type: Houseplant potting mix | VIEW ON AMAZON | See Our Full Breakdown |
| Back to the Roots Organic Succulent & Cacti Mix (6 Quart) |  | Best for Fast Drainage | Brand: Back to the Roots | Volume: 6 quarts | Type: Organic succulent and cacti mix | VIEW ON AMAZON | See Our Full Breakdown |
| Rosy Soil Houseplant Potting Soil, Organic Indoor Mix, 4 Quarts |  | Best for a Peat-Free Multi-Plant Mix | Brand: Rosy Soil | Volume: 4 quarts | Weight: 4 pounds | VIEW ON AMAZON | See Our Full Breakdown |
| Miracle-Gro Houseplant Potting Mix, 4 qt. |  | Best for Convenient Feeding, with Amendments | Brand: Miracle-Gro | Size: 4 qt. | Type: Indoor houseplant potting mix | VIEW ON AMAZON | See Our Full Breakdown |
| soil for string of heart | Brand | Type | Suitable plants |
|---|---|---|---|
| DUSPRO 8-in-1 Aroid Potting Mi | Duspro | — | — |
| Craft Organic Houseplant Potti | Grow Queen | — | — |
| Back to the Roots Organic Succ | Back to the Roots | Organic succulent and cacti mix | Succulents and cacti |
| Rosy Soil Houseplant Potting S | Rosy Soil | Organic indoor potting soil | Monstera, pothos, tropicals, herbs, and ferns |
| Miracle-Gro Houseplant Potting | Miracle-Gro | Indoor houseplant potting mix | Pothos, spider plants, monstera, philodendron, and English ivy |
More Details on Our Top Picks
DUSPRO 8-in-1 Aroid Potting Mix, Pre-Mixed Chunky Soil, Airy Blend, 2 QT
DUSPRO’s eight-ingredient blend is my first choice when the main goal is keeping a string of hearts’ roots from sitting in dense, wet mix. Pine bark, pumice, coco chips, LECA, and perlite give this pre-mixed blend several coarse components, while coir and the other ingredients add some moisture-holding capacity. Compared with Miracle-Gro’s peat-based houseplant mix, DUSPRO is much more clearly aimed at an open, airy root environment.
That structure is useful for growers who tend to water generously or whose rooms dry slowly, but it does not make watering automatic. A small pot or warm, bright spot may dry this mix sooner than a finer blend, so I would check the medium before watering rather than follow a fixed calendar. Its 2-quart size is convenient for one modest repot, but less practical if you are refreshing several pots. The many ingredients also mean less control than buying components separately and making a custom blend.
Why it ranks first: among these options, its ingredient list makes the strongest case for a chunky, air-filled mix without requiring DIY assembly. Craft is a close alternative with bark and mineral ingredients, while Back to the Roots is drainage-focused but specifically formulated for cacti and succulents. I would choose DUSPRO for a ready-made airy balance, not because an aroid label by itself guarantees the perfect result for every string of hearts.
Pros:- Chunky ingredients include pine bark, pumice, coco chips, LECA, and perlite.
- Pre-mixed format avoids sourcing and measuring separate amendments.
- Combines airy components with coir for some moisture retention.
- Its structure is more directly suited to drainage-minded care than the peat-based Miracle-Gro option.
Cons:- The 2-quart size may be limiting for several plants or a large pot.
- A highly airy mix may require more frequent moisture checks than finer houseplant soil.
- The multi-ingredient formulation offers less control for growers who prefer to customize texture.
Best for: Growers who want a ready-mixed, airy medium for one or two string of hearts plants and prefer not to blend ingredients themselves.
Not ideal for: Anyone wanting a large bag, a simple ingredient list, or a moisture-retentive mix for a plant that dries very quickly in its current pot.
- Brand:Duspro
- Product type:Pre-mixed aroid and indoor plant potting mix
- Listed size:2 QT
- Ingredients:Pine bark, pumice, coir, coco chips, LECA, perlite, zeolite, and worm castings
- Texture:Chunky and airy
- Format:Pre-mixed
- Model number:DR2
- ASIN:B0G1C6GBX2
Our verdict“I would choose DUSPRO for the strongest ready-made balance of chunky airflow and practical moisture retention in this lineup.”
Craft Organic Houseplant Potting Mix, 2QT
Craft Organic Houseplant Mix pairs chunky drainage materials with organic worm castings and biochar. Douglas fir bark, lava rock, and pumice are the details that make it relevant to string of hearts: they offer a more open structure than a conventional fine potting soil. Compared with DUSPRO, Craft has a shorter listed ingredient set and a more general houseplant identity; that can appeal to buyers seeking an aerated mix without a complex eight-part formula.
The mix is described as pre-moistened and ready to use, which can make repotting less fussy, especially when handling delicate trailing stems. Worm castings add an organic nutrient source, but the product information still notes that additional fertilization may be needed over time. Its 2-quart bag is best treated as a small project supply rather than a good choice for repotting a whole collection. If you want a larger bag, Rosy Soil provides twice the stated volume, though its ingredient list includes compost and bark fines rather than the same named mineral chunks.
I place Craft just behind DUSPRO because its bark-and-rock structure looks promising for this plant, but the supplied details give less information about the full moisture balance. It is a sensible pick for someone who values a peat-free, pre-moistened mix and has one plant to repot. Skip it if you need bulk soil or want a blend explicitly described with a broader range of coarse amendments.
Pros:- Douglas fir bark, lava rock, and pumice support an open texture.
- Worm castings and biochar are included in the formulation.
- Peat-free and described as pre-moistened and ready to use.
- A simpler alternative to DUSPRO’s longer ingredient list.
Cons:- The 2-quart bag may not cover more than a small repotting job.
- Additional fertilization may be needed over time.
- Chunky texture may not suit growers seeking a more moisture-retentive medium.
Best for: A grower repotting one string of hearts who wants a pre-moistened, peat-free mix with bark, lava rock, and pumice.
Not ideal for: People repotting multiple large plants, or growers who need a larger bag and more detail about the blend’s moisture behavior.
- Brand:Grow Queen
- Size:2 QT
- Item type:Houseplant potting mix
- Listed ingredients:Douglas fir bark, lava rock, pumice, worm castings, and biochar
- Peat status:Peat-free
- Preparation:Pre-moistened and ready to use
- Packs:1
- Model number:2 Quart
- UPC:199284138537
Our verdict“Craft is my balanced small-bag alternative to DUSPRO for growers who want peat-free ingredients and a manageable, aerated mix.”
Back to the Roots Organic Succulent & Cacti Mix (6 Quart)
Back to the Roots Succulent & Cacti Mix is the most direct choice for a grower who wants a drainage-first medium and is comfortable checking moisture frequently. Its stated purpose is to support succulents and cacti with enhanced aeration and rapid drainage, traits that line up with a string of hearts’ preference for a potting medium that does not remain soggy. The 6-quart volume also gives it a practical advantage over the 2-quart DUSPRO and Craft bags when repotting more than one small plant.
Its limitation is fit: the description is specific to cacti and succulents, and it does not give the same detailed ingredient list as DUSPRO. That makes it harder to predict exactly how quickly it will dry in a particular home. Compared with the more balanced Craft blend, this mix is the stronger drainage-led option but may be less forgiving if a plant is in a small pot, exposed to warm air, or watered infrequently. The product information also calls for additional organic fertilizer after one month, so it is not the lowest-maintenance feeding choice.
I rank it below Craft because fast drainage alone is not the whole brief; string of hearts still needs enough moisture between waterings. Choose it if overwatering is your recurring problem and you can monitor the pot. If your home is dry or you tend to forget watering, DUSPRO’s combination of coarse materials with coir is a more balanced starting point.
Pros:- Designed for rapid drainage and aeration.
- The 6-quart bag is larger than the 2-quart DUSPRO and Craft options.
- A drainage-focused formula may suit a grower managing persistently wet soil.
- Stated for indoor and outdoor use.
Cons:- Formulated specifically for cacti and succulents rather than string of hearts.
- The provided description does not specify a full ingredient breakdown.
- Additional organic fertilizer is recommended after one month.
Best for: Growers who routinely overwater, want a larger bag, and prefer a succulent-style mix that drains quickly.
Not ideal for: Anyone seeking a clearly specified, balanced houseplant blend or a mix that needs little follow-up fertilizing.
- Brand:Back to the Roots
- Volume:6 quarts
- Type:Organic succulent and cacti mix
- Suitable plants:Succulents and cacti
- Stated soil traits:Enhanced aeration and rapid drainage
- Use:Indoor and outdoor
- Made in:USA
- Feeding note:Additional organic fertilizer after one month
Our verdict“I recommend this mix when fast drainage and a larger bag matter more than a detailed ingredient list or a balanced feeding schedule.”
Rosy Soil Houseplant Potting Soil, Organic Indoor Mix, 4 Quarts
Rosy Soil’s 4-quart blend is the more versatile choice for a shelf of different indoor plants, rather than the most specialized string of hearts option. Its listed ingredients—biochar, worm castings, mycorrhizae, compost, and bark fines—include organic matter and some bark structure. The peat-free formula and resealable bag are useful if you pot plants in stages. Compared with Craft, Rosy offers double the stated volume and a broader general-houseplant pitch, but its ingredients do not name coarse mineral pieces such as pumice or lava rock.
That distinction matters for this plant. Bark fines can contribute structure, but the product details do not establish how chunky the finished mix is or how quickly it drains. I would inspect its texture and, if it seems dense, amend it with a coarse component before using it for a string of hearts. DUSPRO is the more convincing ready-made pick for airflow because it names several chunky materials; Rosy is more appealing to someone who wants one organic indoor mix for pothos, tropicals, herbs, and other plants as well.
Choose Rosy for flexibility, not maximum drainage. It may suit a grower who waters carefully and wants a resealable, peat-free bag, but it is not my first choice for a pot that stays damp. The product information notes that feeding may be needed over time, so its organic ingredients should not be treated as a complete long-term fertilizer plan.
Pros:- Peat-free formula includes biochar, worm castings, mycorrhizae, compost, and bark fines.
- Four-quart volume is larger than the Craft and DUSPRO bags.
- Resealable packaging is useful when potting in stages.
- Listed for a range of indoor plants beyond string of hearts.
Cons:- The supplied details do not specify coarse mineral ingredients or a measured drainage rate.
- May require additional fertilization over time.
- Indoor-use focus makes it less versatile than the stated indoor-and-outdoor Back to the Roots mix.
Best for: Houseplant owners who want a peat-free 4-quart mix for several indoor species and can check whether its texture is airy enough for their string of hearts.
Not ideal for: Growers who want a clearly chunky, drainage-first mix without inspecting or amending the texture.
- Brand:Rosy Soil
- Volume:4 quarts
- Weight:4 pounds
- Type:Organic indoor potting soil
- Ingredients:Biochar, worm castings, mycorrhizae, compost, and bark fines
- Peat status:Peat-free
- Packaging:Resealable bag
- Suitable plants:Monstera, pothos, tropicals, herbs, and ferns
Our verdict“Rosy Soil makes sense as a peat-free, multi-plant indoor mix, but I would favor DUSPRO when airflow for string of hearts is the priority.”
Miracle-Gro Houseplant Potting Mix, 4 qt.
Miracle-Gro Houseplant Potting Mix is the convenience-led option: its formulation includes fertilizer intended to feed plants for up to six months, and it is described as less prone to fungus gnats. For a string of hearts, however, its stated ingredients—perlite, sphagnum peat moss, coir, and fertilizer—make it less directly aligned with a coarse, drainage-forward setup than DUSPRO or Craft. Peat and coir can retain moisture, while perlite adds air space; the balance may work for some homes, but the product details do not establish the finished texture.
This is the pick for a buyer who wants a general indoor potting mix and prefers built-in feeding over sourcing a separate fertilizer at repotting. I would use a pot with drainage holes and monitor how quickly the mix dries. If it stays damp for too long, adding a coarse material may make more sense than changing watering habits alone. Compared with Rosy Soil, Miracle-Gro has a stated fertilizer duration and perlite but contains peat; compared with the top-ranked DUSPRO, it is simpler to find a broad use for, but less tailored to airflow.
I rank it last for this specific plant because nutrient convenience does not solve the main soil concern: excess moisture around the roots. Its 4-quart bag is a practical general-houseplant size, and the fertilizer claim is clear, but growers who already have a string of hearts in a humid or slow-drying space may prefer one of the chunkier options above. The feeding window is also finite, so it does not remove the need to plan future nutrition.
Pros:- Includes fertilizer stated to feed plants for up to six months.
- Contains perlite alongside peat moss and coir.
- Described as less prone to fungus gnats.
- Four-quart bag is a practical size for general indoor repotting.
Cons:- Peat-based ingredients make it less clearly suited to a drainage-first approach.
- May need amendment if it remains too moisture-retentive for the plant’s conditions.
- Feeding support is time-limited, with later fertilization potentially needed.
Best for: Growers who prioritize a general indoor mix with stated slow-release feeding and are prepared to adjust texture or watering for a string of hearts.
Not ideal for: Anyone looking for a peat-free or clearly chunky, fast-draining mix tailored to this trailing succulent.
- Brand:Miracle-Gro
- Size:4 qt.
- Type:Indoor houseplant potting mix
- Listed ingredients:Perlite, sphagnum peat moss, coir, and fertilizer
- Fertilizer duration:Up to 6 months
- Fungus gnat note:Formulated to be less prone to fungus gnats
- Suitable plants:Pothos, spider plants, monstera, philodendron, and English ivy
- Coverage:Fills one 8-inch container, depending on root ball
Our verdict“I would pick Miracle-Gro for built-in feeding convenience, not for the best ready-made drainage profile for string of hearts.”
How We Picked
I ranked these five mixes around the needs of a string of hearts: roots benefit from air pockets and a potting medium that lets excess water leave promptly. I gave more weight to stated ingredients and structure—such as bark, pumice, perlite, coco chips, and other coarse materials—than to broad claims that a product suits many houseplants. Because the product information does not provide a measured drainage rate or particle-size analysis, I describe likely fit from the listed ingredients rather than presenting those claims as test results.
I also compared how much work each bag may leave to the buyer. A pre-mixed chunky blend can save preparation, while a general indoor mix may be more convenient for a mixed houseplant shelf but less tailored to this plant. Fertilizer content, bag size, and the stated need for later feeding affect ongoing care, too. The order reflects suitability for string of hearts first, then convenience and versatility; it is not a ranking of every possible use for these products.
My list includes a succulent blend because its drainage-first intent is relevant, but I do not treat it as interchangeable with a balanced houseplant mix. Likewise, organic ingredients or a peat-free label do not automatically make a product the best fit: texture, pot drainage, and how often the grower waters are the deciding factors. I note drawbacks for every pick so readers can see when another option may suit them better.
| soil for string of heart | Brand | Type | Suitable plants |
|---|---|---|---|
| DUSPRO 8-in-1 Aroid Potting Mi | Duspro | — | — |
| Craft Organic Houseplant Potti | Grow Queen | — | — |
| Back to the Roots Organic Succ | Back to the Roots | Organic succulent and cacti mix | Succulents and cacti |
| Rosy Soil Houseplant Potting S | Rosy Soil | Organic indoor potting soil | Monstera, pothos, tropicals, herbs, and ferns |
| Miracle-Gro Houseplant Potting | Miracle-Gro | Indoor houseplant potting mix | Pothos, spider plants, monstera, philodendron, and English ivy |
Factors to Consider When Choosing Soil For String Of Hearts
I would choose soil for string of hearts by matching its texture to the way your home dries out, not by relying on a broad indoor-plant label. A loose mix and a draining pot help excess water escape; watering habits and light then determine how long the remaining moisture lasts.
Prioritize airflow, but avoid a mix that dries too fast
String of hearts is a trailing succulent with delicate roots, so a dense, persistently wet medium is a poor starting point. Look for ingredients that create open spaces—bark, pumice, lava rock, perlite, or similar coarse materials. DUSPRO names the widest range of these components, while Craft lists bark, lava rock, and pumice. The Back to the Roots mix is aimed at rapid drainage, but its supplied description gives less detail about its ingredients. An airy blend is not automatically right for every home: a small pot in a warm, bright room may need more frequent checking than one in a cooler, dimmer space.
Use ingredient lists as clues, not guarantees
Product descriptions can indicate a mix’s likely direction, but they do not provide measured drying times or a particle-size breakdown here. Bark and mineral chunks suggest more structure; peat, coir, and compost can contribute moisture retention. A blend may contain both, so the complete combination matters. Rosy Soil includes bark fines and organic ingredients but does not specify pumice or other coarse mineral pieces. Miracle-Gro lists perlite alongside peat and coir. If the bag appears fine or compact, consider adding a coarse amendment rather than assuming its general houseplant label makes it suitable unchanged.
Match bag size to the repotting job
The 2-quart bags from DUSPRO and Craft are convenient for a small plant or a limited refresh, but can be restrictive for multiple pots. Rosy Soil and Miracle-Gro each list 4 quarts, while Back to the Roots lists 6 quarts. The larger bag is not automatically the better buy if the blend does not match your plant or care routine. I would choose volume based on the number and size of pots, and store any leftover mix according to its packaging directions.
Account for fertilizer and follow-up care
Some ingredients contribute nutrients, but that is not the same as a complete, lasting feeding plan. Craft and Rosy Soil note that additional fertilization may be needed over time. Miracle-Gro states a feeding period of up to six months, while Back to the Roots calls for additional organic fertilizer after one month. Check the product’s feeding guidance and avoid treating an organic ingredient such as worm castings as a guarantee that the plant will never need more nutrients. DUSPRO’s listed blend includes worm castings, but its description does not state a fertilizer schedule.
Do not overlook the pot and watering routine
Even a coarse mix can stay wet if water cannot leave the pot. Use a container with drainage holes, empty standing water from the outer pot or saucer, and check the soil before watering again. Pot size matters as well: a much larger pot holds a larger volume of mix around the roots and can take longer to dry. Choose a pot only modestly larger than the root ball, then adjust watering to the actual drying pattern rather than a fixed weekly schedule. These steps can matter as much as choosing between two similar mixes.
Frequently Asked Questions
What type of soil is best for string of hearts?
I would start with a loose, well-draining mix that leaves air around the roots while retaining some moisture. Bark, pumice, perlite, and similar coarse materials can help create that structure. In this lineup, DUSPRO has the clearest named combination of chunky ingredients, while Craft is a simpler peat-free alternative with bark, lava rock, and pumice. The best choice still depends on pot drainage and how quickly your home dries the mix.
Can I use regular houseplant potting soil for string of hearts?
You can, but I would check how fine and moisture-retentive it is before using it unchanged. Miracle-Gro includes peat moss and coir as well as perlite, so its balance may hold more water than a grower wants in a slow-drying room. Rosy Soil is peat-free and includes bark fines, but the supplied details do not establish a chunky texture. If a general mix seems dense, blending in a coarse amendment can help create a more open medium.
Is cactus or succulent soil suitable for string of hearts?
It can be a useful direction because succulent mixes are commonly intended to drain quickly, and Back to the Roots specifically describes rapid drainage and aeration. I would still pay attention to how quickly the plant dries between waterings. A mix that drains very fast may need closer monitoring in a warm, bright spot, and this product’s details call for additional organic fertilizer after one month. DUSPRO may suit growers seeking a less narrowly labeled blend with several coarse components.
Does string of hearts soil need fertilizer?
Often, yes, though the timing depends on the mix and the plant’s care. Miracle-Gro states that its mix feeds for up to six months; Back to the Roots calls for additional organic fertilizer after one month. Craft and Rosy Soil also note that later feeding may be needed. For DUSPRO, worm castings are listed, but the supplied details do not give a feeding duration. I would follow the product guidance and avoid adding extra fertilizer without checking what the mix already contains.
How can I tell if the mix is staying too wet?
Check the medium rather than relying on a calendar: feel below the surface or use a clean wooden stick to see whether damp mix clings to it. If the pot remains wet for an extended period, confirm that drainage holes are open and that the container is not oversized for the root ball. You may also need a more open mix. DUSPRO and Craft name several coarse components, while a finer general houseplant blend may call for amendment depending on its texture and your growing conditions.
Conclusion
For the most convincing ready-made airy blend, I recommend DUSPRO 8-in-1; it names several coarse ingredients while retaining coir in the mix. For a small repot and a peat-free formula, choose Craft, especially if bark, lava rock, and pumice appeal more than a long ingredient list. If overwatering is your recurring issue and you want a larger bag, Back to the Roots is the drainage-first pick, with the caveat that you will need to monitor moisture and plan for feeding.
Rosy Soil suits mixed indoor-plant collections better than buyers seeking a proven chunky texture for string of hearts, while Miracle-Gro is the convenience option for growers who value its stated feeding period and are willing to adjust the medium if it stays damp. Whichever bag you choose, pair it with a pot that drains, avoid an oversized container, and let the soil’s actual drying pattern guide your watering.
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