I must agree with people who say just stay off of pot while on probation. Being that I found myself in a similar situation, except only a year probation(which, thanks to passing and paying it off ASAP I'm getting it cut to 6 months), it is a lot easier than it seems. Just keep judging the risks and rewards, and keep your priorities straight. Marijuana should be used as a luxury, not a necessicity, and this is coming from someone who was a multiday, everyday smoker as well.

Risks:

Go to jail
Longer probation period
More money
Directly impacts record

Rewards:

No jail
Shorter probation period
Less money
No jail
Less of a mark on record(Assuming it is just a misdemenor situation with you...with me, being that I'm on a thing called "Probation without Verdict" once I am done with probation it is completely wipped from the books that I was ever caught )
No jail
Being able to smoke up as much as you want once done
No paranoia about failing a test
No jail
Hmmm, did I mention no jail?


Anyway, the answer is clear to even the likes of Ray Charles, while on probation, Do NOT Smoke Marijuana


/rantover