 Variety in texture , height and timing of floral display were equally important <unk> <unk> . The beds around each <unk> are planted with a mixture of <unk> <unk> and <unk> <unk> . Low @-@ growing plants are chosen for areas immediately in front of <unk> , ensuring that inscriptions are not obscured and preventing soil from <unk> back during rain . In <unk> where there are pedestal grave markers , dwarf varieties of plants are used instead . 
