I know this is not a gardening newsgroup, but I don't know where else to
go for help. Hopefully, someone can assist me.
I have this pesky Johnson Grass (also known as Orchard Grass)
invading my lawn. I am very fussy about my grass, and this is a small
area that measures 1,250 square feet.
A professional lawn service came out, and said to spray the spots with
Roundup and once that grassy areas dies, to rake and apply a good
quality of grass seed.
I have been doing this for two weeks, and every morning I find more
Orchard Grass. It is overwhelming to me.
I think this problem is coming from my neighbor's yard as Johnson Grass
spreads seeds/spores by the wind and birds.
If I get new sod laid, I may still have this problem later on.
I am seriously thinking about applying Roundup over the entire grassy
area, then putting a heavy plastic over the top of the grass once it is
cut short, and having decorative rock hauled in and put over the top.
This way, I don't have to worry about the Johnson Grass coming back, and
if it does, I can simply spray it and not have a bad looking area in my
front yard as it will be all rock.
Has anyone here had this problem?
Do you see any reason why I can't just leave the old sod down, spray
over it, cover with plastic, and apply rock?
I can easily reconfigure my underground sprinkler system.
How long would I need to leave the Roundup on the old grass before
covering it with plastic and rocks?
Many, many thanks to anyone who can help me.
It is so much appreciated.