The answer to 'tree has weeds' is that weeds growing around the base of a tree are a common problem that can compete with the tree for nutrients and water, potentially stunting the tree's growth. Common causes include poor soil conditions, excess mulch, and lack of proper tree maintenance.
Symptoms may include the tree appearing unhealthy, with sparse foliage or slow growth. Weeds can also prevent water and air from reaching the tree's roots. To address this issue, you'll need to remove the weeds and improve the soil and growing conditions around the tree.