But lettuces have really shallow roots and wish lots of nitrogen to build our favourite leafy greens. ???? ????? ??? ?? ????? ????? ?? ????? ????? ????? ??? ? ????? ?????? ? ?????????? ?? ???? ???? ? ???? ???. ??????? ??? ?????? ???? ????? ???????????? ???? ???? ? ?? ???? ????? ?? ????? ????? ???? ????? ?????.???? ?? ??? ??? ?? ???? ??? ? ?? ? ???