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 .
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Introduced, passed
Mar 27, 2025
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Committee, passed
Approved
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Senate vote, passed
Passed Apr 22, 2025
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Assembly vote, passed
Passed Sep 11, 2025
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Governor, passed
Signed
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Law, here now
2025 Wisconsin Act 66
Latest entry in the official record, Dec 10, 2025: “Published 12-10-2025”
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The same bill was also filed in the Assembly as AB 154. That version died when the session ended.
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
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 Show less
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 Hide the names
Authors (5)
- Rachael Cabral-Guevara · Republican, Senate
- Mary Felzkowski · Republican, Senate
- Howard Marklein · Republican, Senate
- Brad Pfaff · Democrat, Senate
- Patrick Testin · Republican, Senate
Signed on in support (12)
- Jill Billings · Democrat, Assembly
- Calvin Callahan · Republican, Assembly
- Jenna Jacobson · Democrat, Assembly
- Tara Johnson · Democrat, Assembly
- Scott Krug · Republican, Assembly
- Miresse and Stubbs
- Jeff Mursau · Republican, Assembly
- Jerry O'Connor · Republican, Assembly
- Kevin Petersen · Republican, Assembly
- Mark Spreitzer · Democrat, Senate
- Travis Tranel · Republican, Assembly
- Nancy VanderMeer · Republican, Assembly
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
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Dec 10, 2025
The new law was published.
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Dec 10, 2025
The governor signed it. It became 2025 Wisconsin Act 66.
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Dec 4, 2025
Sent to the governor.
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Sep 11, 2025
The Assembly passed it too.
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Jun 11, 2025 to Jun 24, 2025
3 more representatives signed on in support.
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May 27, 2025
Sent to the Assembly Committee on Rules.
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Apr 22, 2025
The Assembly received it.
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Apr 22, 2025
The Senate passed it.
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Apr 21, 2025
1 more representative signed on in support.
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Apr 17, 2025
A state agency sent in its estimate of the cost.
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Apr 10, 2025
The committee voted to recommend passing it, 8 to 0.
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Apr 3, 2025
1 more senator signed on in support.
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Apr 3, 2025
The committee held a public hearing.
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Mar 27, 2025
Sent to the Senate Committee on Agriculture and Revenue.
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Mar 27, 2025
Introduced in the Senate.
See the official record, word for word Hide the official record
- 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
- Mar 27, 2025 · Senate
Read first time and referred to Committee on Agriculture and Revenue
- Apr 3, 2025 · Senate
Public hearing held
- Apr 3, 2025 · Senate
Senator Spreitzer added as a coauthor
- Apr 10, 2025 · Senate
Executive action taken
- Apr 10, 2025 · Senate
Report passage recommended by Committee on Agriculture and Revenue, Ayes 8, Noes 0
- Apr 10, 2025 · Senate
Available for scheduling
- Apr 17, 2025 · Senate
Fiscal estimate received
- Apr 18, 2025 · Senate
Placed on calendar 4-22-2025 pursuant to Senate Rule 18(1)
- Apr 21, 2025 · Senate
Representative J. Jacobson added as a cosponsor
- Apr 22, 2025 · Senate
Read a second time
- Apr 22, 2025 · Senate
Ordered to a third reading
- Apr 22, 2025 · Senate
Rules suspended to give bill its third reading
- Apr 22, 2025 · Senate
Read a third time and passed
- Apr 22, 2025 · Senate
Ordered immediately messaged
- Apr 22, 2025 · Assembly
Received from Senate
- May 27, 2025 · Assembly
Read first time and referred to committee on Rules
- Jun 11, 2025 · Assembly
Representative Johnson added as a cosponsor
- Jun 20, 2025 · Assembly
Withdrawn from Committee on Rules and referred to calendar of 6-24-2025
- Jun 24, 2025 · Assembly
- Sep 11, 2025 · Assembly
Rules suspended to withdraw from calendar and take up
- Sep 11, 2025 · Assembly
Read a second time
- Sep 11, 2025 · Assembly
Ordered to a third reading
- Sep 11, 2025 · Assembly
Rules suspended
- Sep 11, 2025 · Assembly
Read a third time and concurred in
- Sep 11, 2025 · Assembly
Ordered immediately messaged
- Sep 11, 2025 · Senate
Received from Assembly concurred in
- Sep 17, 2025 · Senate
Report correctly enrolled
- Dec 4, 2025 · Senate
Presented to the Governor on 12-4-2025
- Dec 10, 2025 · Senate
Report approved by the Governor on 12-9-2025. 2025 Wisconsin Act 66
- 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
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