Toggle navigation

Azalea

{Rhododendron spp.}
Contact Us +

Boron deficiency in azalea

Brown flecks, which become translucent, are the first signs of boron deficiency and are seen on the young expanding leaves. Leaves developing later are distorted and show necrotic patches round the margins. Apical growing points die back. 

U.S. Borax, part of Rio Tinto, is a global leader in the supply and science of borates—naturally-occurring minerals containing boron and other elements. We are 1,000 people serving 650 customers with more than 1,800 delivery locations globally. We supply around 30% of the world’s need for refined borates from our world-class mine in Boron, California, about 100 miles northeast of Los Angeles. Learn more about Rio Tinto.

Copyright © 2025 Rio Tinto. All Rights Reserved.
Terms and conditions Privacy and cookies Modern slavery statement
AB 1305 Cookie preferences
Back To Top