When and how to fertilise hibiscus plants

   The best time to fertilise hibiscus plants is in spring, when they are actively growing.    You use an organic fertiliser if possible, like a manure.    Hibiscus also respond very well to the use of granular fertilisers.  A general purpose garden granular fertiliser is okay.  Normally a dose of around 50grams per square metre is sufficient, spread around the root zone.    Slow release fertilisers are good also, but can be a little slow acting for hibiscus growth spurts in spring. 

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