For Class 7 and Class 8 trucks which are registered farm use vehicles, most states require the operator have a current DOT medical card.
If you operate a vehicle requiring a CDL, if you operate a Commercial Motor Vehicle of 10,001 - 26,000 lbs. GVWR across state lanes, or if you operate a vehicle which would normally require a CDL, but is operated under an exemption (farm vehicles, emergency vehicles, RVs).
yes
Yes
yes
Yes
Basically, there are sports cars, sedans, pickup trucks, semis, farm trucks, SUVs, luxury cars, and minivans.
yes as long as it is farm related
My Uncle Has A Farm And I've Been Driving Everything From Dump Trucks To Tractors Since I Was 5.
I think you have to be licensed to operate farm equipment on a public road, but the minimum age for that is usually lower than for a regular license.
Yes. Any vehicle requiring a CDL requires a DOT medical card in any state - that's a matter of federal law. Most states require medical cards for CMVs exempt from CDL requirements (such as registered farm vehicles, first response vehicles, etc.) as well.
The best way to operate a Christmas tree farm is to work under the owner. Starting a Christmas tree farm takes years. The area need to be cleared, the seeds planted, and then years of care before the benefit can be reaped for the work.