CONCORD, N.H.—On the eve of Wednesday's House vote, Gov. John Lynch says he will veto a bill to legalize home cultivation of marijuana for medical purposes in New Hampshire.

The Senate-passed bill would allow patients with debilitating medical conditions or the patient's designated caretaker to cultivate and possess up to six ounces of marijuana, four mature plants and 12 seedlings at a registered location.

Lynch spokesman James Richardson said Tuesday that Lynch will veto the bill if it reaches his desk. Richardson said Lynch has compassion for people who believe in marijuana's benefits but is concerned about a lack of control over its distribution.

Lynch vetoed a medical marijuana bill in 2009. The House voted to pass it over his veto but it fell two votes short in the Senate.

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