Give your plants the strongest foundation with Culterra Potting Soil 15dm... a premium, ready-to-use blend designed for larger planting projects and consistent, professional results.

This high-quality potting mix combines bark, peat, and coir fibre with added nutrients and water-retentive materials. It delivers the perfect balance of excellent drainage, superior aeration, and reliable moisture retention... helping prevent root rot while keeping roots well-oxygenated and nourished for vigorous growth.

The nutrient-rich formula promotes strong root development, faster establishment, and long-lasting plant health. The generous 15dm (15 litre) bag is ideal when you need more volume: perfect for repotting multiple plants, filling medium to large pots, balcony containers, herb boxes, or refreshing several indoor houseplants at once.

Perfect for:

• Repotting medium and large indoor plants & houseplants
• Filling bigger pots, planters, and containers
• Herb gardens and vegetable starts in pots
• General container gardening and multiple repotting sessions
• Larger seedling trays or transplanting young plants

Why gardeners choose the 15dm Culterra Potting Soil:

• Bark and peat-based structure for excellent airflow and reduced compaction
• Enriched with essential nutrients (nitrogen, phosphorus, potassium) for sustained feeding
• pH-stabilized for optimal nutrient uptake across a wide range of plants
• Superior drainage and moisture balance - less risk of overwatering issues
• Great value for bigger projects - fewer bags needed compared to smaller sizes

Tips for Best Results with the 15dm Bag:

• Pre-moisten the mix - Pour the soil into a large container or wheelbarrow and lightly dampen it first. This prevents dust, helps it settle properly around roots, and ensures even moisture from the start.
• Use pots with good drainage holes - The mix drains exceptionally well, so always pair it with containers that allow excess water to escape. This is especially important for larger pots where water can pool at the bottom.
• For larger containers - Fill the bottom third with the mix, position your plant, and backfill while gently firming the soil. Leave 2–3 cm at the top for easy watering. Ideal for upgrading houseplants from small to medium/large pots.
• Multiple plants or projects - One 15dm bag typically fills several 20–30 cm pots or refreshes 4–6 medium houseplants (depending on pot size). Great for spring cleaning sessions or setting up a balcony/container garden.
• Ongoing care - Water thoroughly after planting and allow the top 2–3 cm to dry slightly between waterings. Every 4–8 weeks, gently aerate the surface to maintain oxygen flow. For hungry plants (like herbs or fast-growing houseplants), top up with a balanced liquid fertilizer after 6–8 weeks once initial nutrients start to deplete.
• Storage - Seal the bag tightly after opening and store in a cool, dry place. The remaining mix will stay fresh for multiple uses over weeks or months.

Trusted by South African gardeners for over 60 years, Culterra Potting Soil delivers reliable quality whether you're a home gardener or handling bigger planting tasks.

Features:

• Generous 15dm (15 litre) bag - perfect for medium to large projects
• Premium bark, peat, and coir-based blend with added nutrients
• Excellent drainage and aeration to support healthy roots
• Balanced moisture retention without sogginess
• Promotes strong, vigorous root and plant growth
• Ready-to-use - no mixing required
• pH balanced for broad plant compatibility