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Bills from the 2025–26 session

Senate Bill 164

Use of certified seed potatoes in planting potatoes and providing a penalty. (FE)

Topics: Agriculture, Trade and Consumer Protection, Department of, Farm produce

Became law

The governor signed it on Dec 10, 2025. It's ⁠.

  1. Introduced, passed

    Mar 27, 2025

  2. Committee, passed

    Approved

  3. Senate vote, passed

    Passed Apr 22, 2025

  4. Assembly vote, passed

    Passed Sep 11, 2025

  5. Governor, passed

    Signed

  6. Law, here now

    2025 Wisconsin Act 66

Latest entry in the official record, Dec 10, 2025: “Published 12-10-2025”

Read the bill

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The same bill was also filed in the Assembly as AB 154. That version died when the session ended.

What it does

Summary by the , the Legislature's nonpartisan drafting office. It's their wording, not ours.

Under current law, a person that plants five or more acres of potatoes in a year may only use seed potatoes that are certified by the College of Agricultural and Life Sciences at the University of Wisconsin-Madison under rules promulgated by the Department of Agriculture, Trade and Consumer Protection, or by an equivalent program in another state. DATCP may waive the certification requirement to use seed potatoes of a specific variety or genotype for a growing season if there are not enough certified seed potatoes of that variety or genotype reasonably available to growers during that calendar year and DATCP determines that the seed potatoes of that variety or genotype that will be used for planting do not pose a serious disease threat. A person that violates the certification requirement is subject to a forfeiture of not more than $150, plus $150 for each acre planted in violation. Additionally under current law, a person that plants five or more acres of potatoes in the state shall retain and allow inspection by DATCP of certain records regarding planted seed potatoes. A person that violates a record keeping requirement is subject to a forfeiture of not more than $200.

Under this bill, DATCP may include as a condition of a waiver certain restrictions as to permissible geographic boundaries or geographic limitations where a person may plant the waived seed potatoes. The bill also provides DATCP with the authority to order a person growing potatoes in violation of the law to remove and destroy any seed potatoes and potatoes involved in the violation. In addition, if a person does not remove and destroy any seed potatoes or potatoes as ordered by DATCP, DATCP or a cooperating local unit of government may take action to remove and destroy the seed potatoes or potatoes as ordered, and the cost of the action may be assessed, collected, and enforced against the person that failed to act as ordered as taxes for the person are assessed, collected, and enforced, or paid into the general fund if the mitigating action was taken by DATCP.

Read the full summary

A person ordered to remove and destroy any seed potatoes or potatoes is required to do so within 72 hours of receiving the order, unless DATCP extends the deadline. The orders that DATCP may issue under the bill are subject to the right of hearing before the department if requested within 10 days after the date of service of the order, and any party affected by the order may request a preliminary or informal hearing pending the scheduling and conduct of a full hearing. A person that plants potatoes in violation of the requirements of this bill is subject to a forfeiture of not more than $5,000, plus not more than $5,000 for each full acre planted in violation. A person that fails to retain, allow inspection of, or provide copies of records of potato planting as required under current law is subject to a forfeiture of not more than $5,000.

Who's behind it

5 senators are its ⁠. 4 are Republicans and 1 is a Democrat.

12 more lawmakers ⁠.

See all 17 names

Authors (5)

Signed on in support (12)

What it would cost

State agencies filed a . Each opens as a PDF from the Legislature.

How lawmakers voted

There was one vote on this bill.

Senate Committee on Agriculture and Revenue vote to recommend it

Passed, 8 to 0 · Apr 10, 2025

No member-by-member record exists for this vote. Committee votes and some older sessions record totals only.

Official motion: “Report passage recommended by Committee on Agriculture and Revenue, Ayes 8, Noes 0”. Official record · This vote on its own page

What happened

  1. Dec 10, 2025

    The new law was published.

  2. Dec 10, 2025

    The governor signed it. It became 2025 Wisconsin Act 66.

  3. Dec 4, 2025

    Sent to the governor.

  4. Sep 11, 2025

    The Assembly passed it too.

  5. Jun 11, 2025 to Jun 24, 2025

    3 more representatives signed on in support.

  6. May 27, 2025

    Sent to the Assembly Committee on Rules.

  7. Apr 22, 2025

    The Assembly received it.

  8. Apr 22, 2025

    The Senate passed it.

  9. Apr 21, 2025

    1 more representative signed on in support.

  10. Apr 17, 2025

    A state agency sent in its estimate of the cost.

  11. Apr 10, 2025

    The committee voted to recommend passing it, 8 to 0.

  12. Apr 3, 2025

    1 more senator signed on in support.

  13. Apr 3, 2025

    The committee held a public hearing.

  14. Mar 27, 2025

    Sent to the Senate Committee on Agriculture and Revenue.

  15. Mar 27, 2025

    Introduced in the Senate.

See the official record, word for word
  1. Mar 27, 2025 · Senate

    Introduced by Senators Testin, Cabral-Guevara, Felzkowski, Marklein and Pfaff; cosponsored by Representatives Krug, Callahan, Billings, Mursau, O'Connor, Petersen, Tranel and VanderMeer

  2. Mar 27, 2025 · Senate

    Read first time and referred to Committee on Agriculture and Revenue

  3. Apr 3, 2025 · Senate

    Public hearing held

  4. Apr 3, 2025 · Senate

    Senator Spreitzer added as a coauthor

  5. Apr 10, 2025 · Senate

    Executive action taken

  6. Apr 10, 2025 · Senate

    Report passage recommended by Committee on Agriculture and Revenue, Ayes 8, Noes 0

  7. Apr 10, 2025 · Senate

    Available for scheduling

  8. Apr 17, 2025 · Senate

    Fiscal estimate received

  9. Apr 18, 2025 · Senate

    Placed on calendar 4-22-2025 pursuant to Senate Rule 18(1)

  10. Apr 21, 2025 · Senate

    Representative J. Jacobson added as a cosponsor

  11. Apr 22, 2025 · Senate

    Read a second time

  12. Apr 22, 2025 · Senate

    Ordered to a third reading

  13. Apr 22, 2025 · Senate

    Rules suspended to give bill its third reading

  14. Apr 22, 2025 · Senate

    Read a third time and passed

  15. Apr 22, 2025 · Senate

    Ordered immediately messaged

  16. Apr 22, 2025 · Assembly

    Received from Senate

  17. May 27, 2025 · Assembly

    Read first time and referred to committee on Rules

  18. Jun 11, 2025 · Assembly

    Representative Johnson added as a cosponsor

  19. Jun 20, 2025 · Assembly

    Withdrawn from Committee on Rules and referred to calendar of 6-24-2025

  20. Jun 24, 2025 · Assembly

    Representatives Miresse and Stubbs added as cosponsors

  21. Sep 11, 2025 · Assembly

    Rules suspended to withdraw from calendar and take up

  22. Sep 11, 2025 · Assembly

    Read a second time

  23. Sep 11, 2025 · Assembly

    Ordered to a third reading

  24. Sep 11, 2025 · Assembly

    Rules suspended

  25. Sep 11, 2025 · Assembly

    Read a third time and concurred in

  26. Sep 11, 2025 · Assembly

    Ordered immediately messaged

  27. Sep 11, 2025 · Senate

    Received from Assembly concurred in

  28. Sep 17, 2025 · Senate

    Report correctly enrolled

  29. Dec 4, 2025 · Senate

    Presented to the Governor on 12-4-2025

  30. Dec 10, 2025 · Senate

    Report approved by the Governor on 12-9-2025. 2025 Wisconsin Act 66

  31. Dec 10, 2025 · Senate

    Published 12-10-2025

Terms on this page

Wisconsin Act

The number a bill gets when it becomes law, like 2025 Wisconsin Act 12.

Official term: Act. More in the glossary

Legislative Reference Bureau

The Legislature's nonpartisan office that drafts bills and writes the summary at the top of each one.

Official term: LRB analysis. More in the glossary

Author

A lawmaker who formally puts a bill forward. The text itself is drafted by the Legislative Reference Bureau.

Official term: Author, coauthor. More in the glossary

Signed on in support

Lawmakers who back a bill without being one of its authors, often from the other chamber.

Official term: Cosponsor. More in the glossary

Cost estimate

A state agency's estimate of what a bill would cost or save.

Official term: Fiscal estimate. More in the glossary

Roll call

A vote where each lawmaker's yes or no is recorded by name.

Official term: Roll call vote. More in the glossary

From the Wisconsin Legislature's official record, checked Sep 15, 2026. See the source

Wisconsin Act

The number a bill gets when it becomes law, like 2025 Wisconsin Act 12.

Official term: Act

Legislative Reference Bureau

The Legislature's nonpartisan office that drafts bills and writes the summary at the top of each one.

Official term: LRB analysis

Author

A lawmaker who formally puts a bill forward. The text itself is drafted by the Legislative Reference Bureau.

Official term: Author, coauthor

Signed on in support

Lawmakers who back a bill without being one of its authors, often from the other chamber.

Official term: Cosponsor

Cost estimate

A state agency's estimate of what a bill would cost or save.

Official term: Fiscal estimate

Roll call

A vote where each lawmaker's yes or no is recorded by name.

Official term: Roll call vote