Hi - I have a Cordyline Australis Pink Passion which has been doing fine in the ground up to now (well drained soil, sheltered south and west facing position) but the leaves are yellow/brown at the tips (still pink where they come out the ground). I realise it's probably been horribly under-watered and am rectifying that, but I wondered if anyone has any other advice for how to make the plant happy again, please! I gently tugged at the leaves and they won't budge which is a good sign, and there are no other signs of infestation or damage. Does it need fed as well as watered? It's only just over a foot high (it only went in the ground last year). Thanks!