Potted plants need regular feeding
Even when the best quality potting
mixes with included controlled release fertiliser are used,
plants in pots should be given additional food on a regular
basis.
Most plants remain in pots for far longer than the release
period of the fertiliser included in the mix (normally six months).
There are two options to ensuring potted plants remain well
fed:
Choose the fertiliser type that is best suited to your plants
and apply or dilute it according to the instructions on the tub or
packet.
Don't over-fertilise - nutrients not taken up by your plants
will be washed out the drainage holes and may end up in groundwater
or catchments.