Simplify the following text for a Grade 3 native English-speaking person.
Original: The lemon is both a small evergreen tree ( Citrus Ã -- limon , often given as C. limon ) native to Asia , and the tree 's oval yellow fruit .
Simplified: The lemon is a small tree ( Citrus limon ) that is green even in the winter . It came from Asia , and is also the name of the tree 's oval yellow fruit .