I have a 1 year old Lemonade and Mandarin tree planted in wine barrels which both have curly leaves. There are no aphids and no evidence of citrus leaf miner. The leaves are not distorted just curled from the point to the base of the leave. It seems to affect all leaves, old and new. The Mandarin is beautifully green and looks totally healthy with new shoots. The Lemonde is not looking as healthy, just a little yellowed and frost damaged, but also has new shoots. I have fertilised, top dressed and mulched about 2 weeks ago, but nothing has changed.... any ideas?