citrus gall wasp infestation can also cause new growth to curl up from the
plant being stressed, and as far as i know the only way to get rid of it is
to remove the infected branches (the ones with the little swollen nodes on
them) and use white oil to try and prevent reinfestation, keep the
fertilizer and water up to the plant too.
hope this helps
"Jolly" wrote in message
ps.com...
On Mar 26, 10:50 am, "Steve" wrote:
i got a few citrus plant and the leaves curl up, it is only on the new
shoots, how do i stop this?
steve

It may be citrus leaf miner. If the curled leaves have silver/grey
trails underneath then this will be the cause. There is no cure but
white oil can prevent it. I made my own using equal parts vegetable
oil and water with a dash of detergent. Spray this on new foliage. It
worked for my lemon tree in a pot but it's since kicked up its heels
as I can't water it enough in Brisbane

Here is a good refernce:
http://www.abc.net.au/gardening/stories/s1397350.htm

Joel