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.