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John Innes No.3 – Mature Plant

John Innes No.3 - Mature Plant

Based on the traditional John Innes recipe, our peat-free compost combines loam, eco-compost, horticultural grit and John Innes fertiliser, with added biochar.
Each ingredient plays a part in creating a supportive growing medium. Loam helps retain moisture and nutrients, horticultural grit improves drainage, and biochar supports aeration and root development. A slow-release feed supplies essential nutrients and trace elements for up to 12 weeks.

  • Made for mature plants: ideal for moving established plants into larger pots and containers.
  • Peat-free: formulated using loam and eco-compost.
  • Retains moisture and nutrients: helps support plant health between watering.
  • Supports drainage: horticultural grit helps excess water move through the compost.
  • Enriched with biochar: helps improve aeration and growing conditions around the roots.
  • Feeds for up to 12 weeks: slow-release fertiliser provides nutrients and trace elements for hungry plants.
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TH142 John Innes No.3 - Mature Plant 25ltr 80 539 150440 061 4

Over 35 years experience serving the horticultural industry

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'The love of gardening is a seed that once sown never dies, but grows to the enduring happiness that the love of gardening gives' - Gertrude Jekyll