My postman apparently did not see the "perishable" label in crisp clear lettering and left my nep on the front porch in 15 degree weather without knocking on the door. *I got to it about one-half hour after delivery. *The pot was cold, but only in spots when I unpacked it. *The plant has turned brown in spots and I need a professional opinion on how extensive the damage is. *The plant is a N. ventricosa.