The 2004 ASLA National Salary Survey indicates the average salary for landscape architecture positions is $74,644, an increase of 23.4 percent in real terms as compared with the 1998 salary survey, the most recent one produced by ASLA. "In the 2004 survey, most respondents have 21-25 years of experience with an average salary of $80,273. The average salary for those with 0-5 years of experience is $41,803. Those with 36-40 years of experience earn the highest average salary at $97,564."
Thanks to Chris Steins