Rainbows & Unicorns Designer Potting Mix – Aroid Blend
Price range: $9.99 through $79.99
Premium chunky aroid potting mix engineered for Monstera, Philodendron, Syngonium, and tropical houseplants.
• Chunky structure prevents soil compaction
• Fast drainage reduces root rot risk
• Improves root aeration
• Ready-to-use premium mix
Rainbows & Unicorns Designer Potting Mix – Aroid Blend
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Rainbows & Unicorns Aroid Potting Mix
Best aroid potting mix for Monstera, Philodendron, Syngonium, Pothos, and tropical houseplants. Chunky structure designed for drainage, aeration, and strong root growth.
Rainbows & Unicorns Aroid Potting Mix is a premium chunky substrate engineered for aroids and tropical foliage plants that need fast drainage, consistent airflow around the roots, and reliable moisture control. Because root health starts in the pot, this blend is built to maintain structure longer, reduce compaction, and create a more forgiving watering routine for indoor growers.
Pack sizes: 1 Bag, 2 Bags, or 4 Bags (select above).

Best Uses for This Aroid Potting Mix
- Aroids: Monstera, Philodendron, Syngonium, Pothos, Anthurium, Alocasia, and other aroid houseplants
- Tropical houseplants: Aglaonema, Dracaena, Calathea, and similar tropical foliage plants
- Ideal environments: bright windows, plant rooms, grow tents, and greenhouse-style setups
Why Aroids Thrive in a Chunky Potting Mix
Aroids require oxygen at the root zone. As a result, dense all-purpose potting soils often hold water too long and compact over time. In contrast, a chunky aroid potting mix improves airflow and allows excess water to exit faster. Therefore, roots stay healthier and more resilient, especially in indoor conditions where evaporation can slow down.
Additionally, a stable chunky structure helps reduce the wet/dry extremes that stress roots. For example, you can water thoroughly while still maintaining air pockets throughout the mix. Because of this balance, many growers find plant care becomes more consistent and predictable.

What’s Inside Rainbows & Unicorns Aroid Potting Mix
This blend combines chunky aeration components, moisture-balancing organics, mineral support, and microbial root-zone enhancers. In other words, it’s a tropical houseplant potting mix optimized specifically for aroids.
- Chunky coco coir for structure and aeration
- Coco pith for controlled moisture retention
- Perlite to increase drainage and root oxygenation
- Diatomaceous earth to support structure and silica contribution
- Worm castings for gentle organic nutrition
- Compost to support soil vitality and long-term structure
- Rooting supplements to encourage strong root development
- Azomite for broad-spectrum trace minerals
- Premium fertilizer (6-2-4 NPK) for balanced growth support
- Humic acids to improve nutrient availability and uptake efficiency
- Microbial root enhancer to support root-zone biology

How to Use
- Choose a pot with drainage holes: Aroids perform best when excess water can drain freely.
- Position your plant: Set the root ball at the right height so the plant sits level in the pot.
- Backfill with mix: Add Rainbows & Unicorns Aroid Potting Mix around the roots and gently tap to settle. Do not compress tightly.
- Water thoroughly: Water until it drains out the bottom, then discard runoff.
- Dial in watering: Let the top portion dry slightly between waterings based on light, humidity, pot type, and root mass.
Pro tip: Because this mix drains fast, many growers water more confidently. However, you should still adjust frequency based on your environment and plant size.

Who This Mix Is For
- Plant owners who want a ready-to-use chunky aroid potting mix without mixing ingredients at home
- Collectors growing Monstera and Philodendron who want better drainage and root oxygenation
- Anyone looking for a tropical houseplant potting mix that holds structure and supports healthy roots
Frequently Asked Questions
Is this aroid potting mix good for Monstera?
Yes. Monstera roots benefit from a chunky mix that drains fast while maintaining airflow around the root system. This blend is designed for that root environment.
Can I use this for Philodendron?
Yes. Philodendron thrive in a well-aerated, fast-draining aroid potting mix that retains balanced moisture without compacting.
Is this a tropical houseplant potting mix or an aroid mix?
It’s both. It’s engineered as a best aroid potting mix first, and it performs extremely well for many tropical houseplants that prefer drainage and airflow.
Does a chunky mix help prevent root rot?
Chunky structure improves drainage and airflow. Therefore, it reduces the conditions that often contribute to root stress from overwatering. Your environment and watering habits still matter, but the mix is more forgiving than dense soil.
How much does one bag cover?
Coverage depends on pot size and how much root volume you’re filling. A 5-quart bag typically repots multiple small-to-medium houseplants or a few larger pots.
Learn More About Aroid Soil & Care
- Chunky Aroid Mix vs Regular Potting Soil
- When to Repot Monstera
- Philodendron Soil Decision Guide
- Chunky Aroid Mix Ingredients Explained
Proudly Manufactured by RPFS, Inc.
Rainbows & Unicorns Aroid Potting Mix is produced by RPFS, Inc. using a carefully selected ingredient profile designed to support healthy root growth, stable structure, and consistent performance for aroids and tropical plants.
Additional information
| Weight | 17 lbs |
|---|---|
| Dimensions | 12 × 12 × 12 in |
| Pack Size | 1 Bag, 2 Bags, 4 Bags, Defect Bag |
23 reviews for Rainbows & Unicorns Designer Potting Mix – Aroid Blend
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This is my second purchase of the 4 bag bundle. I love it 😁 all of my plants have been thriving since I switched.
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After purchasing one bag and loving it, I had to purchase the 4 pack and my plants are loving it!
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Excellent aroid mix. Light, chunky, and drains perfectly while still holding enough moisture. My plants are thriving. Rainbows and Unicorns is wonderful!
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I love the rainbow’s and unicorn mx!! I can already tell a difference in the plants I have transplanted. I will definitely be buying more from ya’ll. Thank you!!
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Best potting soil by far. All my plants do amazing. Especially my high variegation plants. The leaves don’t brown out like normal. Don’t need to worry about feeding. Love it! Working on changing my whole collection to Rainbows and Unicorns.
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Rainbows and unicorns is my go to aroid mix that I use for 98 percent of my plants. Vigorous root growth and definitely helps, if not the reason the variegation is even better on all of my plants!!! Excellent drainage and aeration! Top notch aroid mix that I’ve came across!
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Absolutely love this soil. All my plants are thriving. I think I’ve purchased 20+ bags at this point. Stand by in 100%!!! Currently have over 100 plants in it. Alocasias, Monsteras, and Philos. All of them love it.
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Absolutely love this soil. All my plants are thriving. I think I’ve purchased 20+ bags at this point. Stand by in 100%!!! Currently have over 100 plants in it. Alocasias, Monsteras, and Philos. All of them love it.
Plant Used: Kaempferia pulchra
Pot Type: Clear Nursery
Drainage & Aeration: Medium
Root Growth: Yes
Recommended for Aroids? Absolutely!!
Repotted in R&U in January and have seen impressive root growth and these beautiful leaves. I’ve purchased multiple times and am slowly replanting all of my prized aroids in this mix!
Plant Used: Philodendron, Monstera
Pot Type: Clear plastic nursery pots
Drainage & Aeration: Fast drainage
Root Growth: Yes
Recommended for Aroids? Yes
My plants absolutely thrive in Rainbows and Unicorns! My monstera Albo is finally producing new leaves after switching her over to Rainbows and Unicorns! My Caramel Marble has taken off, too! I’m a chronic over waterer and this soil mix is so much more forgiving! It has all but eliminated my troubles with root rot! I recommend this substrate to all of my planty friends.
Rainbows and unicorns is my go to aroid mix that I use for 98 percent of my plants. Vigorous root growth and definitely helps, if not the reason the variegation is even better on all of my plants!!! Excellent drainage and aeration! Top notch aroid mix that I’ve came across!
I love this soil. I have never been able to keep a polly alive. I tried multiple times they always died. I put my polly in rainbow and unicorns soil. And she is not dead but she is thriving!!!! I have replace the soil in my monsteria with rainbows and unicorns soul and can not wait to see them thrive!!!! I will get all my 150 plants in rainbows and unicorns soil as they need repots. I am amazed at how well this soul takes care of my plants needs and causes the plant to blow up with growth and are healthy and happy great job with your soil. I love it!!!!