"Charlie Pridham" wrote

Get hold of some winter feed (They sell it in tubs) and use it.

Are we talking Garden centre or is it a bit more specialized? my recently
rescued trees definately need a helping hand! (I think they may be
oranges as the leaves smell and taste more orange than lemon) Its the
flowers I am more interested in than the fruit.

Yes, most GCs stock it, certainly if they sell Citrus they should.
The ones I prefer are by Chempak and are separate winter and summer feeds
which you change with the clocks...
http://www.gardendirect.co.uk/chempa...ter-feed-p-131

A dose of Sequestered Iron in the spring works wonders too.
--
Regards
Bob Hobden