Notes
Notes, with the sources under them.
Written for this site. Each one cites the public page the fact came from. Nothing here is a news reprint.
- Should I put lime on my lawn in Iowa?
Why Iowa State University says most Iowa lawns do not need lime, the pH range turf and gardens grow best in, how buffer pH sets the rate, and why the soil temperature decides whether to lime this fall or next spring.
2026-11-14
- Is it too late to test my soil this fall in Iowa?
Why November still works for an Iowa soil sample while the ground is open, the timing mistakes that skew a result, and what a university lab charges in 2026.
2026-11-11
- Ten to fifteen cores, four to eight inches, one bag
How ISU Extension describes a home soil sample, and when to take it.
2026-10-11
- Iowa State does not test soil anymore
What ISU Extension tells home gardeners to do instead, and which labs it names.
2026-10-11