Oak wilt is one of the deadliest tree diseases in the United States, killing millions of oak trees across 76 Texas counties.

Spider veins, also known as telangiectasias or thread veins, resemble spider webs or tree branches. They occur when damage to blood vessels close to the skin's surface causes them to widen.

Texans can help prevent the spread of oak wilt by avoiding pruning or wounding oak trees from February through June.

Veinal necrosis causes leaves' veins to change color all over the tree. First, check the health of the live oak. Jones said anyone can do this by checking if the leaves of a live oak are green and ...