"I did a lot of thinking about it this week," Lawson said. "I thought it was probably about time."
Lawson, who has offers from LSU and Auburn and has been receiving heavy attention from Texas A&M, Mississippi State, Oregon and others, said a Wednesday conversation with the Tigers led to a meeting on campus Friday with the coaches.
"The coaches told me they wanted to spend some time with me before everyone got into town for the spring game on Saturday, so they wanted me over on Friday to talk with them," Lawson said.
That's when the coaches got down to brass tacks.
"I got to talk with the coaches, and both Les Miles and Brick Haley said that I was one of the top guys on their board," Lawson said. "I felt important to them. I knew that they wanted me to commit and help keep the momentum going.
"They said they look forward to me being in the program, so I told them I was ready to commit.
"It's a great day for my family. We are all really excited to be Tigers."
Lawson, who grew up a short drive from the LSU campus, said location was one of the biggest factors in his decision to give a verbal commitment to the Tigers.
"I did a lot of thinking about being close to home," Lawson said. "LSU was close to home, so that was big for me. I didn't want to be too far from my mom and everyone else, and I think she's happier about that than anyone else. She has been going crazy all afternoon."
Of course, for one of the state's premier prospects, putting on the purple-and-gold is about much more than just being around family.
"LSU has the tradition I loved," Lawson said. "They are coming off a trip to the BCS Championship and a 13-0 (regular-season) record. They also have good tradition on the defensive line, and I want to keep that up.
"It was the right fit."
Lawson is the seventh commitment to LSU's 2013 class, and the 6-foot-4, 270-pound rising senior is the first defensive lineman to join the group.
"It's a really good class, and I am excited about that," Lawson said. "The coaches told me they are building up one of the best classes in the country.
"I am excited about being a Tiger. It's a great chance for me to stay home and represent the state of Louisiana."
Lawson will be on the LSU campus Saturday for the spring game.