Question
Is it okay to plant prairie dropseed and little bluestem grasses over a septic bed?  I know that roots need to be fairly shallow to not cause problems.  Also, my soil is sandy.  Do I need to add organic matter or can I just stick to prairie grasses and wildflowers that are suitable for sandy soils?

Answer
Hi Valerie,
Thanx for your question.  Most grasses will not cause a problem with septic beds.  Usually, it is trees and shrubs because their roots go so deep and are so large.  I doubt if the prairie grasses will be a problem.  Check with your local county extension agent to be sure.  If you don't know who that is give me your state and county and I will provide you with a contact.  I hope this helps.
Tom