Q. Can one install a grass sprinkling system during the Nine Days?
A. See question 3255 above. Kovetz Halochos (8: 14: n. 17) permits due a to the fact that the sprinkling system is basically irrigating water and keeping the plants alive and thus preventing loss, which is permitted during the Nine Days.
Horav Shlomo Miller’s Shlit’a opinion is similar.
Rabbi A. Bartfeld as advised by Horav Shlomo Miller and Horav Aharon Miller Shlit’a