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Controlled-release fertilisers

Best Buy controlled-release fertilisers

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Check out our Best Buys to find a slow-release fertiliser that can really boost your patio plants


Controlled-release fertiliser Best Buys

  • Find out which controlled-release fertiliser will keep your flowers looking great throughout the year
  • Ratings for popular brands of fertiliser such as Miracle-Gro, Westland, Osmocote and Phostrogen
  • We test the fertilisers out on pelargoniums and potatoes so you can choose the best with confidence

Which? members can find out the full results of our controlled-release fertilisers test, and which is the best fertiliser for feeding plants in containers, and our advice on how to use liquid and controlled-release fertilisers for the best results.

Join Which? now to unlock our controlled-release fertiliser recommendations on this page. Already a member? Log in now