Janaazah

Questions relating to graves

Q: Please explain the following:

1. Is a grave sacred land?

2. Is it best for it to be flat with no heap of sand rising?

3. Should a grave be unmarked with no plank or name-plate or is it better to have it to help identify where a person is buried?

4. Can flowers etc be planted on a grave?

5. Is there reward in spending money on maintaining a cemetery including removing weeds from the graves?