Can any keen green fingers out there give me any advice on what to do?? Ive never owned a lemon tree before, I picked it up today from a local whisk group, Looks a little sad brown twigs just snapping off, ive cut it back im holding onto hope as there is a lovely bouncy green twig with a lemon hanging off! What should I do with it?? Citrus feed now ? Or leave it till spring/summer? Please help as I'm really optimistic to bring it back to life!!