Since 2013, when Maggie Hassan was Governor, it has been legal to grow medical marijuana in New Hampshire. Thirteen years later, June of 2026, the new Governor, Kelly Ayotte tried to take law and veto it. She said, “I do not support the cultivation of marijuana in our state.” Other than that broad sentence, there was nothing else stated in the bill about her disdain towards marijuana. She has voiced her concerns over “youth mental health, addiction, and traffic safety…” but these concerns are not a part of her veto.
The legislators were a strong enough group to get the two-thirds veto ride to override her decision. The Senate voted 16-8 in favor of the override and the House voted 257-44 on that same override. The new law, called Chapter 344, took effect immediately, June 2026.
Greenhouses Could Mean Lower Medical Marijuana Prices
Senate Bill (SB) 468 doesn’t legalize recreational marijuana. It doesn’t give patients the right to grow cannabis at home. Instead, it changes how New Hampshire’s existing licensed Alternative Treatment Centers, or ATCs, produce marijuana for the state’s medical marijuana program.
Under the new law, an ATC may apply for permission to operate a greenhouse either at its existing cultivation facility or at another approved location. They want to use greenhouses because they are cost effective. Greenhouses can also take the advantage of natural sunlight while still providing a controlled growing environment. Indoor marijuana cultivation can require large amounts of electricity for lighting, ventilation, heating and environmental controls.
The Legislature specifically wrote into the law that greenhouse cultivation is intended to reduce energy costs and provide lower prices for registered qualifying patients. Each ATC seeking approval must submit a detailed submission explaining how its greenhouse operation would accomplish those goals. That patient-price requirement makes this more than simply a cultivation bill.
Marijuana Greenhouses Won’t Appear Overnight
Even though the override has been in effect since June, the veto override does not mean New Hampshire cannabis companies can immediately start putting plants in greenhouses. The Department of Health and Human Services must first establish regulations governing greenhouse cultivation, including location and security requirements.
Individual greenhouse proposals will also remain subject to local zoning laws. The state and local government must find input from medical cannabis patients, caregivers and residents in the community where a greenhouse is proposed.
There is also some accountability built into the law. Approved operators of greenhouses must report the effect greenhouse cultivation has on energy costs and cannabis prices, and those results must be included in state reporting.
A Small Change With a Bigger Message
New Hampshire has not immediately embraced recreational marijuana. What lawmakers decided was that patients already legally authorized to use medical cannabis should potentially benefit from a less expensive way of producing it.
The bigger question now is whether those greenhouse savings actually make their way from the grow facility to the patient.
If cultivation becomes cheaper, medical marijuana should become cheaper too. SB 468 is designed to find out whether that promise becomes reality. New Hampshire should be jumping at the opportunity to keep costs low. I wonder if the Governor would feel differently if she visited Texas Go to lastchanceasylum.com to find more research!
