At what point do you start claiming your market garden on your taxes

At what point do you start claiming your market garden on your taxes? Do you claim all expenses or are there some you cant claim? Is there anything special you must do to be able to claim it? Get an LLC etc?
Our market is small so not huge profits, but i have ideas for a few things to increase profit. Possibly enough claiming on taxes would be needed. So id like the info before we really get going.

We claim all income to prove what we're doing and it gives us a 'farm business number' which has many tax implications, because we have gross income above the $7000 threshold to qualify here in Canada.

I would get a tax ID at minimum if not file an LLC. And claimed all of it and deduct all of it. This gives you several advantages one of the big ones is applying for Farm loans business loans and farm grants. Because it becomes a proof of experience as a farmer that those sorts of Institutions want to see.