What is the recommended action if a mimosa tree is diagnosed with a severe case of vascular wilt?

When a mimosa tree is diagnosed with a severe case of vascular wilt, the most effective and recommended action is to remove the tree, including its roots. Vascular wilt diseases are often caused by pathogens that invade the tree's vascular system, leading to the decline and death of affected plants. These diseases can be highly detrimental and can spread to healthy trees nearby if not properly managed.

By removing the entire tree along with the roots, you eliminate the source of infection and prevent further spread of the disease. The roots can harbor pathogens that may reinfect areas if left in place. Furthermore, simply applying a systemic fungicide would not be effective, as many vascular wilt diseases are caused by fungi that are not effectively controlled with fungicides. Fertilizing the tree in an attempt to promote recovery is also not advisable, as this could stress the plant further and may not address the underlying disease issue. Pruning affected limbs may provide only a temporary solution and does not eliminate the problem, as the disease will continue to progress within the vascular system.

Thus, complete removal is essential to ensure the health of surrounding plants and prevent the disease from spreading.