Within three months, a shipment of small branches arrived in California. The branches carried not only cottony cushion scale, ...

Palm plants can fall victim to yellowing leaves for a variety of reasons, from natural causes to diseases that need immediate ...

morgan23 / Getty Images A fully grown tree may lose several hundred gallons of water through its leaves on a hot, dry day. The same tree will lose nearly no water on wet, cold, winter days, so ...

All tree leaves have an outer layer called the epidermis, which can also be used in the identification process. This leaf "skin" always has a waxy cover called the cuticle and varies in thickness.