Potting Soils & Substrates

Premium Potting Soils & Substrates for Indoor Houseplants

Find the perfect soil mix for your indoor plants at Plant Circle. Our curated collection of premium potting soils and substrates includes specialized aroid mixes, sphagnum moss, orchid bark, and everything you need to help your houseplants thrive.

Whether you're caring for rare aroids, succulents, orchids, or tropical foliage, we have the right substrate to support healthy root development and vigorous growth. All our soils are carefully formulated for optimal drainage, aeration, and nutrient retention.

New to plant care? Read our Beginner Plant Care 101 guide to learn about light, water, and soil basics.

What Soil Does My Plant Need?

For Aroids (Monstera, Philodendron, Alocasia):

• Aroid Potting Mix 5L – chunky, well-draining mix for Monstera and Philodendron
• Alocasia Potting Mix 5L – moisture-retentive blend for Alocasia varieties
• Anthurium Potting Mix 5L – specialized for Anthurium root health
• DIY Peat-Free Aroid Soil Kit – sustainable cocopeat base

For Tropical Foliage:

• Calathea & Maranta Potting Mix 5L – moisture-loving prayer plants
• Ficus Potting Mix 5L – ideal for Ficus elastica and lyrata
• Hoya Potting Mix 5L – perfect for trailing Hoya varieties
• Syngonium Mix 5L – fast-draining for arrowhead plants
• Fern Potting Mix 5L – moisture-retentive for ferns

For Succulents, Cacti & Specialty Plants:

• Cacti & Succulents Mix 5L – fast-draining for desert plants
• Lithops Potting Mix 5L – ultra-draining for living stones
• Carnivorous Plant Mix 5L – acidic, nutrient-poor for Venus flytraps
• Bonsai Potting Mix 5L – specialized for bonsai cultivation

For Orchids & Epiphytes:

• Orchid Potting Mix 5L – bark-based for Phalaenopsis and Cattleya
• Orchid Bark 3L – pure bark chips for epiphytic orchids
• Sphagnum Moss 3L – moisture retention for orchids and propagation

Soil Amendments & Components

Customize your own potting mix with our premium soil amendments:

• Perlite 3L – improves drainage and aeration
• Vermiculite 3L – retains moisture and nutrients
• Pumice 3L – volcanic rock for drainage
• Worm Castings 3L – organic fertilizer and soil conditioner
• Active Charcoal 60g – prevents root rot and odors
• Coco Coir 3L – sustainable peat alternative
• Coco Husk 3L – chunky coconut fiber for aeration
• Lava Rocks 1L – drainage layer and hydroponic medium

Hydroponic & Semi-Hydro Solutions

• Semi-Hydro Mix 3L – LECA-based for semi-hydroponic growing
• Clay Balls 3L – expanded clay for hydroponics
• Clay Hydrogranules – soil-free growing medium

Base Mixes & Universal Soils

• Base Mix 5L – versatile foundation for custom blends
• Universal Potting Soil – all-purpose houseplant mix
• Terrarium Mix 5L – moisture-retentive for closed terrariums
• Propagation Soil Mix 1L – fine texture for rooting cuttings

Common Soil Questions Answered

Why is my plant's soil mouldy? Mould often appears due to overwatering, poor drainage, or lack of air circulation. Learn how to prevent and treat mouldy soil in our guide: Why is my plant's soil mouldy?

How often should I repot my plants? Most houseplants benefit from fresh soil every 1–2 years. Check our Plant Care 101 guide for signs your plant needs repotting.

Can I mix my own soil? Absolutely! Start with our Base Mix and add amendments like perlite, bark, and worm castings to create the perfect blend for your plants.

Why Choose Plant Circle Soils?

• Plant-Specific Formulas: Each mix is designed for specific plant families and their unique needs
• Premium Quality: Carefully sourced components for optimal plant health
• Sustainable Options: Peat-free alternatives like cocopeat and coco coir
• Expert Guidance: Detailed care tips and blog resources to help you succeed
• Fast EU Shipping: Quick delivery across Germany and Europe

Shop premium potting soils and give your plants the foundation they deserve!