|I bought 3 of these last year and planted them in the same flower bed. About one month after I planted them, one of the plants' leaves turned brown and fell off. I scraped a little of a branch to see if it was alive, and it was. Eventually, half of the plants leaves came back. Then it happened to the second one, and none of the leaves came back. The third one was okay. Now that Spring is here, one has all its leaves, one has none, and one has half of it's leaves. I would like to replace the two but need to know what happened and what do I do so this doesn't occur again? Thank you.