zico10 - 7-11-2006 at 22:27
I was wondering if there was any substance I could SAFELY mix into my sprinkler system to dye my lawn a fun color (i.e. not green). Any help is
greatly appreciated
12AX7 - 8-11-2006 at 08:01
FDA approved food coloring?
Mind that it's going to be some color involving green, which is a secondary color. That doesn't leave much flexibility beyond "ugly".
Tim
dapper - 8-11-2006 at 20:49
methylene blue will make you piss blue... itll stain your lawn too
zico10 - 9-11-2006 at 10:02
That sounds like exactly what I need! I'll give it a try. Thanks dapper
woelen - 9-11-2006 at 13:28
IIRC methylene blue may be a carcinogen. Using it in large quantities, coloring a lawn does not sound like a smart thing to me.
zico10 - 9-11-2006 at 13:33
hmm....yeah, i wouldn't want that. i guess i'll just keep looking. thanks!
guy - 9-11-2006 at 13:39
Wouldnt that kill your lawn, making it hard for the grass to do photosynthesis?
If you dont care, just spray paint your lawn 
evil_lurker - 9-11-2006 at 16:16
The do make a blue dye specifically for this purpose.
You can find it in big ag supply stores, its used as an alternative to foam markers so you can see where your spray rig has been.