<H1>MSMA Use</H1> <P><UL> <LI><H2>Most effective on seedling to 4 leaf crabgrass </H2> </UL><UL> <LI><H2>Apply when temperature is between 75 and 90°F. </H2> </UL><UL> <LI><H2>Repeat application(s) usually needed on well tillered crabgrass</H2> </UL></P> <P></P> <P>