Actions of the night
Q: Please advise regarding the actions of the night:
1. Is it necessary to close all doors and windows of the house from maghrib till after sunrise?
2. If so, must it be done in even hot weather or with a window in the toilet room as well?
3. Must a utensil, like a plastic jug, kept in a toilet-bathroom that is used expressly for the purpose of holding water for istinja also be covered at night?
4. If so, can the water in such a utensil that was not covered at night be used for istinja?
5. Should even adults avoid leaving the home or standing around outside unnecessarily from maghrib till after sunrise?
6. Must one avoid cutting trees and plants, gardening, picking flowers etc. from maghrib till after sunrise?
7. Would (Question 6) apply to indoor plants as well? 8. Also, is it alright to have plants growing indoors? Like a vase of flowers, a tree, or a pot plant?