westland garden health logo

Consumer helpline 01480 443789

10am-4pm, Mon-Fri

John Innes no 3 Mature Compost 28l
Rollover to zoom

Westland John Innes Peat Free No.3 Mature Plant Compost nurtures and also sustains plants for a longer life. It has been developed specially to help mature plants and shrubs, with a long lasting and nutrient rich formulation.

With a four month feed it will sustain plants for longer, improve aeration as well as water management.

  • Nurtures and sustains growth
  • Feeds for four months
  • Rich in nutrients for hungry plants
  • Encourages new growth

Be sure to feed your plants with Boost All Purpose Plant Feed – specially formulated for use with peat free composts.

Sizes available

  • 10 litre
  • 28 litre
  • Why use
  • How to Use
  • Feel Good Gardening
  • Tips & Advice

john innes no3 mature plant why use

no 3 mature plant john innes


john innes no3 mature plant how to use

feel good gardening john innes

General Advice

  • Use in a well-ventilated place and avoid breathing dust
  • Always wear gloves when gardening and wash hands after use
  • Store in a frost-free place and away from weed killers and other garden chemicals

Frequently Asked Questions

Q. What are the differences between John Innes Composts?

A. John Innes Composts are designed to be a life partner for plants. John Innes Seed Sowing Compost has a small amount of nutrients to encourage germination. John Innes No1 has a little more nutrients, perfect for transplanting seedlings. John Innes No2 is used for potting on young plants and John Innes No3, which has the most nutrients is best used for final potting up of plants. John Innes Ericaceous is suitable for all acid loving (lime – hating) plants.

Q. Will my pets or wildlife be attracted to this product?

A. John Innes No 3 Mature Plant Compost does not contain any organic elements so shouldn’t be attractive to animals

Q. Can I use this compost for my houseplants?

A. John Innes No 3 Mature Plant Compost is great for use with larger houseplants. For any other job choose a compost that is more specific to your requirements—for example Westland Houseplant Potting Mix.

For any questions or advice, please contact our technical advice line on: 01480 443789 (Mon – Fri 10am – 4pm) or email customerservice@westlandhorticulture.com

Related articles

How to Prune Shrubs

How to Prune Shrubs

Pruning is a complicated issue. It’s done for a few reasons, so it’s best to decide your motives, so that you get it right. After...

What is Life Partner for Plants

What is Life Partner for Plants

The John Innes range has been specially formulated to become your life partner for your plants. The compost range literally forms a growing system that...

How to Care for Roses

How to Care for Roses

If you’re interested in how to care for roses, our comprehensive guide can help you each step of the way. Whether you’re growing from bare...

Featured Products

Recently Viewed Products