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https://mercer.osu.edu
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OSU Extension
Ohio State University Extension
Mercer County
Mercer County Office
4978 Mud Pike, Suite 1
Celina, OH 45822
Phone:
419-586-2179
419-586-2179
Fax:
419-586-3367
Directions to Mercer County Extension Office
Hours of Operation
Monday-Friday
8:30a.m. - 4:00p.m.
or by appointment
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County News
4-H Enrollment Deadline - March 1, 2026
4-H online enrollment for the 2026 program year is open! All new and returning members must enroll by March 1, 2026.
Vegetable Seeds Now Available
Our Great Garden Giveaway is back! Mercer County residents- come by our office to pick up a packet of free vegetable seeds for your garden. We're giving away seeds to grow:
1/27/26 Office Open
We are open on Tuesday, January 27, and the rest of the week as usual, as weather permits (as long as we are not under a Level 3 Snow Advisory).
More County News
CFAES News
Kokosing invests in Ohio State to develop construction workforce from classroom to jobsite
CFAES celebrates first-ever Ohio 4-H Week
Weather whiplash raises financial risk for Ohio farmers
Ohio 4 H Spark EXPO propels students toward future careers in 2026
Ohio State helping retailers prepare for new FDA rule reshaping food safety tracking
CFAES announces four new delegates to national CARET program
Ohio State study offers a win-win for clean water and agriculture
Risk for Lyme disease in Ohio is equal to Connecticut, study shows