I also caught him growing marijuana in my yard once and let that slide.  

Use of illegal drugs by all Tenants is prohibited, (including marijuana).

Coming from NJ to Colorado and now owning some property in Colorado, I am wondering what the responsibility is for landlords especially around marijuana smoking and growing.

The strangest thing I have found was Marijuana Plants growing in the back yard.

Coachella Valley and Desert Hot Springs are booming right now because of Medical Marijuana.  

In a duplex of mine, a tenant called saying they thought the tenant next door might be smoking marijuana.

Mine is 17 pages, including the lead based paint disclosure (2 pages) and the pre-move in damage checklist (3 pages).The Marijuana and Smoking clauses take up 1/2 page.Acceptable use is 1/2 page.Discussion of HOA and its rules takes up 1 1/2 pages.Pets and pet deposit takes up 1/2 pageLate Payments, NSF Checks and other payment discussions take up almost 3/4 of a page.

Entire Facebook page dedicated to the love of Marijuana and the revelation that he just got out of jail.2.

As of 2017, Singapore had one of the highest prison population rates out of the Asia-Pacific countries." https://www.statista.com/topic...The point I make is that most Americans don't behave themselves (littering, jaywalking, staring, dress code, making assumptions, marijuana is okay, rude behavior compared to Singapore etc), and are more likely to run afoul of the law and local customs in Singapore doing things that they are simply accustomed to doing with no reprecussions in the USA.

And in Michigan, eight suspected cases of marijuana laced with fentanyl, occurring between June and November 2021, have been identified.Madeline Hilliard, an ambulance driver and CEO of Trojan Awareness Combatting Overdose (TACO) in Los Angeles, reports she has seen evidence of contaminated marijuana in the field.Fentanyl-Laced Marijuana On the RiseMay 12, 2022In the case of fentanyl, an amount the size of a couple grains of sand can be enough to cause an overdose.https://www.claudiablackcenter...Nearly 800 pounds of fentanyl worth $21.1 million found in shipment of green beansFentanyl is the leading cause of death for Americans under the age of 40.