I'd like to get a handle on it before the new growth starts in a few months. My crepe myrtles usually start leafing out in mid May. Since my last try, i've purchased a 5'H x 4'W x 2'D mini greenhouse and also have a 4'L grow light now so if these items will be helpful to use, i can do that. He who plants the seed beneath the sod and waits for it to grow up through the clod, he trusts in God.