About new sod
Is good idea to put fertilizer after one week they instaler in ground because is still like yellow most of it and green color after 3 weeks
Boulder County Colorado
We could use more information from you before we can give you a recommendation.
1. How was the soil prepared before the sod was laid?
2. Has the sod stayed wet or has it dried out between watering?
3.What type of grass is it?
4.Have you fertilized the sod yet
The above link has information on sods that may be helpful.
Let us know if you need any more help.