(1) Can be any variation... E.g. (Row,Column) = (15,15) or (5,45) or (45,5) etc. The row will give us number of rows, while the column will give us number of trees in each row. Not sufficient as there's many possibilites.
(2) We're told there are 12 rows of trees. But we do not know how many trees are in the orchard. So not sufficient.
(1) and (2)... could have rows 1-11 having 19 trees and row 12 having 16 trees, or 1-11 having 10 trees and row 12 having 115 trees... etc... so not sufficient as there's many possibilites.