But lettuces have incredibly shallow roots and need a lot of nitrogen to develop our favorite leafy greens. ???? ???? ??: ??????? ?? ??? ??? ?? ????? ???? ???? ???? ?? ???? ???? ??? ???? ?????? ?? ????? ?? ??? ????? ?? ? ????????? ?? ???? ??? ???.???? ?????? ???? ?? ???? ?????? ? ????? ???? ?? ?????? ?? ??? ??? ??????? ????.Vegetable gardens have