Hi, I bought a Pygmy Date Palm about two weeks ago, potted it up in a lovely new pot and it was decorating my decking nicely, until it started to turn brown. First the top fronds started to turn now they all appear to be turning. Am I over-watering it? Also, I covered the top of the top with slate chippings - could this be causing it problems? It's in full sun (surprisingly its been roasting hot here in the UK) till about 3pm then its in shade. I'm not sure what to do and being as it wasn't cheap I don't want to lose it. Any ideas would be gratefully received. Many thanks.