Pre-emergent first before the weeds start grown (hence the name
"pre-emergent). Do this now. Follow with Turfbuilder plus weedkiller (aka
Turfbuilder Plus 2) in May. This will kill the weeds after they start
growing. Not sure about milky spore but I think it takes several years to
take full effect against grubs. It should be unrelated to your
fertilizer/pre-emergent/weed killer regimen.
"Jane" wrote in message
t...
In what order should I apply the following lawn treatments?
Milky Spore for control of Japanese Beetle grubs
pre emergent crabgrass killer
Turf builder plus weed killer

I don't know when to do any of them in zone 6b. Maryland

Thank you,
Jane