Hi...I've had this lemon tree for a couple of years now..I should mention I'm from New-Brunswick CANADA ..I normally have the tree inside and outside on my deck for the summer and noticed the leaves are curly and silver...what does this mean??...I think we had 1 or 2 nights of frost like maybe a -1 ??
Sunburned! You can't move an indoor plant directly into the sun. You should place it in the shade and gradually introduce it first to morning sun then much later midday sun. Lemons are generally frost resistant. Mine recovered from -10c this year though it nearly died as a result!