growing citrus

For the past 6 years I've been sourcing out a lot of the online nurseries and farming orchards around Australia they are all out of stock and some farming orchards are too expensive on freight couriers. I've been looking through local nurseries and I still haven't found any success. Before I...

I live in Arizona and have beautiful citrus trees that I love. In the late summer, it gets really hot here, my grapefruit tree lost 90% of its leaves. Then new growth leaves were small and kind of light green in color. I don't know what to do! Any suggestions would be greatly Appreciated! The...