Q.growing red maple trees
I have a red maple in front of my house. On the lawn and in the mulch around the tree, there appear to be leaves, and many of them; however, when I knelt down to pick up these leaves, they were attached to the soil and when pulled up they have roots. Are these baby trees? If so, may I please have tips on how to grow them? Right now I have about 10 of these in a glass with water.
Here is an article that will give you tips on how to care for your seedlings. Refer to the section 'Planting and Caring for Maple Trees'.
https://www.gardeningknowhow.com/ornamental/trees/maple/growing-maple-trees.htm