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2013 Which? Best Buy composts for containers

Best Buy composts for pots and hanging baskets

Compost Comparison

Pelargoniums in the worst (left) and best (right) compost in our trial

We’ve tested 23 composts, including top brands B&Q, J Arthur Bower’s, Levington, Miracle-Gro, New Horizon and Westland, to find the best for the flowers and veg in your pots and hanging baskets this summer.

We’ve tested composts every year since 1985 and never cease to be amazed by how much the quality varies. 

This year, only three of the 23 composts we tested are good enough to be Best Buys. Some are such poor quality that plants struggled to grow. 

All three Best Buys are widely available. And one is a cheap, peat-free growing bag.

To find out which composts you can trust this spring – and which you should steer clear of –  read the results of our latest compost trials.

If you’re not a member already, you can get instant access to all our reviews by signing up to try Which? for £1.


Watering the 552 pots in our compost trial

Composts we’ve tested

No other organisation carries out such extensive and impartial compost trials as Which?. To find out more about the lengths we go to, read how we test compost.

Our latest trials included 14 peat-based composts and nine peat-free ones from the following leading brands:

  • Verve (a B&Q own label)
  • J Arthur Bower’s
  • Homebase
  • Levington
  • Miracle-Gro
  • New Horizon
  • Westland

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