Whether you've just bought your first Monstera or have been building an urban jungle for years, good soil mix makes all the difference. Houseplant lovers are looking for one thing above all else: happy, healthy plants.

And that starts with the right foundation — literally. In this article, we compare the 5 best soil mixes for houseplants, based on quality and customer satisfaction.

★★★★⯨ 4.8/5 based on 1200+ reviews on Trustpilot

1. SYBASoil

SYBASoil soil mixes are tailored to different plant types and contain ingredients such as worm castings, lava rock, coconut fibre and activated carbon.

Advantages:

  • Composition specifically tailored to your plant -- making watering easier
  • Lasts for years without loss of quality
  • 100% satisfaction guarantee or your money back. (Unique)
  • Transparent origin and social production
  • Free advice from a biologist via customer service
  • Free plant scan tool to find the right soil mix.
  • The only product that uses predatory mites during packaging to prevent pests.

Cons:

  • Only available online
  • Less suitable for those who prefer to use a universal soil mix, although they have now also created a universal mix.
View the best-rated soil mixes from SYBASoil.

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2. BioBizz

Biobizz is a popular name in the world of organic gardening. Originally designed with cannabis cultivation in mind, their All-Mix and Light-Mix are often used by hobbyists looking for organic, peat-based soil options. While they’re usable for houseplants, they aren’t specifically formulated for them—so if you’re after a soil tailored to your Monstera or Calathea, this may fall short.

Pro's

  • Certified organic
  • Widely available in grow shops across Europe

Con's

  • Not formulated for houseplants
  • No active pest prevention
  • Lacks plant-specific tailoring

👉 See the full SYBASoil vs Biobizz comparison.

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3. Lechuza

Lechuza Pon is a clean, mineral-based substrate designed for self-watering pots. Made from pumice, zeolite, and lava rock, it’s great for aeration and drainage. However, Pon lacks organic materials and nutrients, so it works best as part of a system rather than a standalone soil. Ideal for experienced plant parents using Lechuza planters, but not the best plug-and-play option.

Pro's

  • Excellent drainage and aeration
  • Clean and reusable
  • Perfect fit for self-watering pots

Con's

  • Not a complete potting soil
  • Limited support for plant growth long-term

👉 Is SYBASoil a good Lechuza Pon alternative?

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4. (US) RepotMe

Loved by rare plant collectors and orchid fans in the US, RepotMe makes premium small-batch mixes with ingredients like stalite, perlite, and fine-grade bark. They offer excellent specialty blends, but they’re not widely available in Europe—and most of their mixes come without added nutrients or pest-control properties. Great if you love tinkering and customizing your plant care.

Pro's

  • High-quality ingredients like stalite and perlite
  • Custom mixes for specific plant types
  • Trusted by rare plant collectors

Con's

  • Only ships to the US
  • No active pest control
  • Not beginner-friendly

👉 Which is better: SYBASoil or RepotMe?

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5. Westland

Westland is a go-to brand in UK garden centres, known for its accessibility and low prices. Their mixes are simple and often peat-based, offering a basic solution for casual plant owners. While they’re convenient, they don’t include the bells and whistles of more advanced options like pest defense, slow-release nutrients, or plant-specific tailoring.

Pro's

  • Affordable
  • Easy to find in UK shops
  • Simple to use for casual growers

Con's

  • Often includes peat
  • No active pest control or nutrient innovation

Conclusion

If you are looking for long-lasting quality, transparency and a mix tailored to your plant type, you will find many advantages at Sybotanica — provided you don't mind that it is only available online. Need help choosing? Start with our houseplant soil buying guide!

For those who prefer to buy soil mixes in a shop, Westland and BioBizz are good alternatives.

Frequently Asked Questions

Which soil mix retains moisture best?

How much moisture a soil mix needs to retain varies per plant. That is why SYBASoil has different types of mixes – tailored to what your houseplant needs.

The base is always coconut, a material that retains moisture well and remains airy. This prevents wet feet and dry periods.

What is the best soil mix for indoor plants?

SYBASoil. Why? Because each mix is tailored to the type of plant. Tropical, succulent or orchid: you get a mix that offers exactly the right structure, nutrition and moisture balance. Not standard soil mix, but plant-specific soil mix.

What is the best soil mix for rooting?

SYBASoil contains worm castings, organic nutrients and remains airy – ideal for healthy root growth and 180 days of nutrition!

Whether it's root development in houseplants or preventing root rot, this mix supports strong, well-branched roots.

For reviews, we first look at Trustpilot or Google. If there aren't many there, we go to bol.com for a fair comparison.

Review scores were updated on 16/06/2025.