Janaazah

Purchasing a grave in advance

Q: Some people reserve a piece of land for their graves in their lives so that after their demise their graves could remain near their passed away relatives. My question is that keeping this thing in mind, is it permissible to do so? If not than is it permissible for any other reason?

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?