What I found shocked me! The data show that soil temperatures reached 52 degrees F. on Feb. 24 in 2000, Feb. 25 in 2001, Mar. 14 in 2002 and Mar. 4 in 2003. My timing advice has been wrong ! To get good crabgrass control in Atlanta you should apply the pre-emergent on March 1, not March 15.Otherwise the seed will sprout beforehandâ¦.and most pre-emergent chemicals do not control crabgrass seedlings.hat I found shocked me! The data show that soil temperatures reached 52 degrees F. on Feb. 24 in 2000, Feb. 25 in 2001, Mar. 14 in 2002 and Mar. 4 in 2003. My timing advice has been wrong ! To get good crabgrass control in Atlanta you should apply the pre-emergent on March 1, not March 15.
  0.4 of an inch Answer   There are 2.54 centimeters in 1 inch, so 1 centimeter is 0.394 inches.
=. 1.9304 Meters (m). Inches. An inch (symbol: in) is a unit of length. It is defined as 1â12 of a foot, also is 1â36 of a yard. Though traditional standards for the exact length of an inch have varied, it is equal to exactly 25.4 mm.