The answer to 'tree removal has weeds' is that it's common for weeds to grow in the area where a tree was removed. This is because the soil disturbance and loss of the tree's root system can create an environment that's favorable for weed growth. Weeds may start to appear soon after the tree is removed and can quickly spread if not addressed.
Some common causes of weeds after tree removal include: exposed soil, lack of shade from the tree canopy, and nutrients released from the decomposing tree roots. Symptoms include a variety of fast-growing weeds like crabgrass, dandelions, and thistles. To solve the problem, you'll need to take steps to re-establish grass or other desirable groundcover in the area.