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.
Centimeter (British English: centimetre; abbr. cm) is a metric length unit, which is equal to 1/100 meter and 10 millimeters. Inch (abbr. in, symbol â) is a length unit in various systems. There are 12 inches in one foot and 36 inches in one yard. The international inch, accepted in the USA, equals to about 2.54 centimeters. The International System of Units (abbr. ISU, SI) is a modern system of measurement units, which is most widely used in the world.