Use floor drain for washer ?????
The end of the washing machine drain hose must make a loose fit into whatever it is connected to.
If the floor drain doesn't have enough capacity in terms of gallons per minute, it will overflow. A check valve in the floor drain may result in not enough capacity. Nowadays a washing machine drain pipe should be 2 inches in size.
The disadvantages of crab apple trees. In summer, the apples are too sour to pick and eat. In winter the birds come and leave dropping all over the place.