I live in NY hardiness zone 6. I just purchased 2 apple trees, 1 Red Delicious and 1 Cortland. They stand 6-7 feet tall and I believe they are 2 years old. They are starting to bloom and leaf out. the temps here have been into the teens at night and around 40 during the day. I have kept them in the barn at night and put them outside during the day for sun. Is it to early to put them in the ground? Thank you in advance.