How to Care for Plants Grown in Multipurpose Compost

For first-time growers, planting up is the exciting bit — but the real success comes from day-to-day care. Multipurpose Compost (MPC) gives plants a great start, but it needs a little attention to keep performing.

Understand How MPC Behaves

  • Drains quickly and dries faster in warm weather
  • Limited nutrient reserve (4–6 weeks)
  • Light, airy texture perfect for roots, needs topping up over time

Watering – Get the Balance Right

  • Check moisture by weight; water thoroughly then let dry partly
  • Hot or windy spots may need daily watering
  • Use rainwater to maintain pH and reduce lime build-up
  • Tip: saucers can hold a small reserve in heatwaves

Feeding – Replace What’s Used

  • Nutrients last about one month
  • Feed weekly with balanced fertiliser; high-potash for flowering plants
  • Compost tea for an organic approach

Refreshing – Keep Structure and Life

  • Top up every few months with new MPC or PAS100 compost
  • Mix 50% old + 50% new with biochar for structure
  • Remove surface crust or moss to let compost breathe

Seasonal Care – Weather, Light and Position

  • Check plant tags for shade/full-sun preference
  • Windy spots dry out twice as fast as sheltered corners
  • Spring–Summer: feed regularly, move with the sun
  • Autumn: reduce watering, remove old growth
  • Winter: avoid puddles and cold-air gaps under pots. Rest on insulating pads — closed-cell foam, EPS/XPS sheet, or timber board wrapped in hessian or coir. These block cold transfer from paving while still allowing drainage. Wrap large pots with fleece or bubble wrap and group together for warmth.
  • Indoor plants: keep away from draughts, don’t overwater — MPC stays damp longer indoors

Troubleshooting Quick Reference

SymptomLikely CauseQuick Fix
Yellow leavesLack of nitrogenFeed weekly with general fertiliser
Wilting despite damp compostRoot rot / poor drainageImprove drainage; use coarse bark or biochar blend
Moss or mould on surfaceOver-watering, low lightScrape off surface, water less, improve airflow
Growth stalled mid-seasonNutrient depletionRepot or top-dress with fresh MPC

Summary

Multipurpose Compost makes growing easy — but it needs regular watering, feeding, and refreshing to stay in top condition. With these small habits, your pots and baskets will thrive from spring to autumn.


Disclaimer.

Brand names such as Westland, SylvaGrow, RocketGro, Dalefoot, Carbon Gold, and others mentioned on this site are registered trademarks of their respective owners. MultipurposeCompost.co.uk includes these examples for informational and comparative purposes only and does not claim endorsement, affiliation, or suitability for any specific use. Gardeners and buyers should always check current product specifications and manufacturer guidance before purchase or application.

How to?

Follow our easy to use starter guides on how to look after your plants and get confident in no time! From planting seeds, to what to do in winter, we’ll guide you every step of the way!

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Questions?

Our FAQ page contains more in-depth answers to frequently asked qxauestions regarding the use of gardening with Multipurpose Compost!

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