This is a tough case for moms to handle especially when one in every household is involved in one or another substance abuse. Marijuana is the start to more severe drugs.

You are on the right path by throwing it out.  Perhaps you should:
- Get him to talk to a person who has done this and is now rehabilitated
- Tough love is one way of dealing with it - call in the cops and ask them to put him in the holding cell on his own for a few hours to scare him.
- Take away his privileges - cellphone, no pocket money, etc.
- Explain to him how it makes you feel.

Good luck.

I think you're blowing this out of proportion.  
MJ isn't as harmful as many suggest. Including the "expert" here claiming he'll be addicted and assuming grades will go down.
There is zero evidence marijuana is a gateway drug or causes mental disorders, or cancer. In fact quite the opposite.
The one study they did that said teens will lower their IQ also admitted there could be many reasons other than mj.

Study Finds No Cancer-Marijuana Connection Dr Tashkin UCLA lung specialists study funded by DEA --as soon as the results were in he was tossed aside. NIDA funded a new study same conclusions, they refuse to post the results instead claiming there's no conclusion.
http://www.washingtonpost.com/wp-dyn/content/article/2006/05/25/AR2006052501729.html

Cannabis For Infant's Brain Tumor, Doctor Calls Child "A Miracle Baby"
http://www.huffingtonpost.com/2012/12/01/cannabis-for-infants-brai_n_2224898.html?utm_hp_ref=marijuana

Marijuana Chemical May Fight Brain Cancer
http://www.webmd.com/cancer/brain-cancer/news/20090401/marijuana-chemical-may-fight-brain-cancer

Pot Could Actually Improve Brain Function for Middle Aged Men
http://www.opposingviews.com/i/society/drug-law/uk-study-shows-middle-aged-males-marijuana-usage-not-detrimental

Marijuana discovered to help patients with bipolar disorder
http://now.msn.com/marijuana-discovered-to-help-patients-with-bipolar-disorder

The 10 Most Successful Potheads on the Planet...Cool Enough to Admit It «
http://coedmagazine.com/2009/02/06/the-10-most-successful-potheads-on-the-planet-cool-enough-to-admit-it/

Quit allowing propaganda to scare you into turning your son in. THE Worst problem with mj IS law enforcement.
Not only that doing as the other "turn your kids in" parents suggest will most likely create a rift between you and you son that will be irreparable.
Once that bond is broken you may never get it back --and it will have been do to your over reaction and the crappiest advice from the so-called expert on here and parents who have the need for absolute control.
You and your son are going through one of the hardest times in your relationship he's growing up and you have to begin to let go.  

Like many here. I too smoked in HS and throughout my life occasionally I am a business owner who graduated with honors from college, have a happy life with my family of four.

Please, don't destroy your family by turning him into the police. The WORST advice Ive ever read.
Concentrate on his job (school) and treat him with respect . As you would a good friend YOUR age. Not by threatening but by guiding through genuine interest.
These parents that believe their kid doesn't do [fill in the blank] because they "laid down the law" are only fooling themselves. Their kids just learn how to hide it better or decided ON THEIR OWN it wasn't for them.

 How do I know?
I partied with the Lutheran school kids and a preacher's kid. They knew all the tricks. That's who I bought my mj from. Their parents swore jr did exactly as told. We laughed at them while getting high.

You should get him help! Your son is hurting his body, using drugs. The bad side effects of drugs will take place in him, if not already.

Hi Valleri,  
Look, about your son smoking cannabis, first off cannabis isn't very harmful physically. Cannabis mentally, is also not very harm full. There is no withdrawal symptoms, you can't overdose, and there has been 0 deaths attributed to marijuana use in the past 10,000 years. Now propaganda, through media, and movies such as 'refer madness' makes us think that it's such a bad thing when it really isn't. I don't smoke cannabis, I've tried it and it just wasn't for me. Now enough education, I am a teacher I can't help it :P, now for your son. Speak to him, tell him these facts, just make sure he doesn't take any other much much more harmful drugs such as cigarettes and cocaine etc. Tell him, that you're happy for him to smoke, but all in moderation. As long as marijuana doesn't get in the way of his school work. Some of the most brilliant people in the world smoke cannabis. As long as your son isn't stupid about it, he should be fine. Initiate a rapport with your son, this will help both your communication. Good luck with everything. He's still young, he may grow out of it.
- Matt

You did all the right things. congratulations and he is behaving like most teens who feel entitled.  the disease is not addiction but entitlement. Start there.  Get your partner involved, go to his friends parents (because he is surely not smoking alone) and invite them over for coffee, and monitor him. you can ask your pediatrician to consult. She/he has invariably handled this many times before. Is there some one he respects who may have an impact on his thought process? Finally, cut out the cash.  By taking away purchase power, he can't buy it without getting into illegality more than he already is. Teens are not impressed by what getting caught means to their future schooling or employment but it helps to remind them.

best wishes.

Wayne Yankus, MD, FAAP
expert panelist: pediatrics

Let's be honest here fellow parents, I am a 35 year old single dad with 3 kids, I am a Managing Partner for a company, and I am indeed a marijuana user.

I'm a very hands on single dad, and my children are everything to me, there is nothing in this world that I wouldn't give them. I smoke marijuana regularly but at the RIGHT PLACE AND AT THE RIGHT TIME.

There seems to be alot of problems with weed and teens, the answer is very simple. Parents, Have an open mind and research on this plant, not just from our government. Don't tell your child lies because sooner or later they will find this out and this will push them to use and abuse it.

Don't just tell them no. Have an explanation for it, and please, if you do smoke cigarettes or drink alchohol I don't think you're in the position to say otherwise.

1. Tell your child he's too young to smoke marijuana and it is bad at a young age, set an age you think is appropriate or wait till you think are responsible to do so.

2. Teach them responsible use like doing it after they have completed everything.

3. If you see him smoking marijuana and when he is not doing what he was suppose to do that is when you punish him.

If anyone is wondering if this method has worked, My parents did this to me. Good day.

Limiting the child's access to money could help make it stop and/or make it more obvious that he/she is trying to continue to smoke, etc. Things missing, having to ask for permission; ask for money and explain what it is for... They have earned this kind of restriction by making bad decisions and now you are intervening to help get him/her back on track. Little mistakes early on lead to very big consequences later in life.

Children are influenced by what they hear and spend time with the most. Society has watered down everything that will work against a child's ability to excel. Drugs are common in the world , so children accept it.  Continue to talk with him. Find some movies that shows the outcome . Share real life experiences with him. spend lots of time with him. don't overwhelm him, but enjoy him. Ask questions? Show him how it affects the brain, ask him to read articles. You have to make this problem realistic, children want proof! Give it to him, in a loving, but stern way. Don't give up! Don't get angry. Give him boundaries.