Hello Bishop Lee,

Short answer: To legally seed and fertilize lawns professionally in Michigan, you must be certified or registered through the Michigan Department of Agriculture
& Rural Development (MDARD) if you apply any pesticide, including common lawn herbicides. Fertilizer alone does not require certification, but most lawn‑care
businesses use weed‑and‑feed or herbicides, so certification is almost
always required.

Below is a clear, Michigan‑specific pathway based on MSU Extension and MDARD
requirements. Go to this link:

Certification
- Pesticide Safety Education Program

What certification do you actually need in Michigan?

If you plan to apply weed‑and‑feed, pre‑emergent herbicides,
grub control, or any other pesticide product for hire, you must
hold one of the following:

• Commercial Certified Pesticide Applicator (most lawn‑care
  pros)


• Registered Applicator (allowed for general use) pesticides only; cannot apply Restricted Use Pesticides)

Certification
- Pesticide Safety Education Program

For lawn work, the relevant category is:

• Category 3A
  – Turfgrass Pest Management: This is the official MDARD category for lawn pesticide application. Go to this link:


• Certification - Pesticide
  Safety Education Program

Required study materials (MSU Extension)

To become certified, you must study:

• Commercial
  Core Manual (E‑2195)


• Category 3A
  Turfgrass Pest Management Manual (E‑2327). These manuals cover turf care, weed ID, disease management, pesticide laws, safety, and calibration.

Printed or digital manuals are available through MSU’s Pesticide Safety Education Program. Go to this link:

Turfgrass
Pest Management: Training Manual For Comm Applicators - Category 3A - MSU
Extension

Exams and licensing

You must pass:

1. Commercial Core Exam


2. Category 3A Exam (forturfgrass)

MDARD administers these exams. Fees:

• $75 for commercial certification


• The license is valid for 3 years and must be renewed via exam
  or recertification credits.

Legal categories (MDARD)

Step‑by‑step: How to get legally certified in Michigan

01

Determine certification level - Choose between Commercial Certified Applicator or Registered Applicator depending on whether you will apply restricted-use or general-use pesticides.

02

Study the MSU Extension manual - Review the Commercial Core Manual and Category 3A Turfgrass Pest Management Manual to prepare for MDARD exams.

03

Register for the MDARD exams - Schedule the Commercial Core and Category 3A exams through MDARD’s testing system and pay the required fees.

04 

Pass required examinations - Successfullycomplete the core exam and the turfgrass category exam to qualify for certification.

05

Apply for your license - Submit your certification application and fee to MDARD to receive your official pesticide applicator license.


06

Maintain certification - Renew every three years through recertification seminars or by retaking the state exams.

I hope this helps!