Best weed dispensaries in O'Fallon, Illinois with authentic reviews

This is the only dispensary in this area so people who live around here really don't have a choice unless they want to drive an hour away. When they first opened up rec use here, the flower was old and dry. At least what I was getting was that way. Fast forward to 2025 and everything seems fresh now, but I do tend to look for new additions to the menu and get those. I saw where some people were complaining about price, but I compared the same exact products with dispensaries in KC and the prices are exactly the same. It's been my experience here where most of the staff are very friendly. Maybe not all of them all the time, but everyone has their bad days, so I don't fault them on that. Overall, I'd give this dispensary 4 out of 5 stars. The reason for the missing star is they don't have as large of a selection as other bigger dispensaries. But aside from that, these guys are right on par with everywhere else I've been to as far as staff, price and atmosphere. I'm very glad they are there because if they weren't, everybody would be driving to Joplin or KC all the time.

Best dispo in KC. Staff are straight homies who want you to have the best experience with their products. Vibes are immaculate inside. Will always come to this location.

There are many offers available at the St Charles Zen Leaf. Medical Mondays is a great program. They even helped me with the process of obtaining a medical card. I visit the store weekly for medicinal cannabis. All staff is always friendly and helpful. Keep up the amazing service Raven!

First time here at this location. Excited to be here as there is no dispensaries in Texas. A true recent struggle as I was a med patient in Arizona. Love the energy as soon as we walked in. Wasn’t sure which cashier to go to because everyone was eager to help us with a smile. Wish I remembered the name of our budtender but he the best! Well educated in the products and offered honest recommendations for us. I always appreciate true transparency with a purchase. He threw in an extra pre roll which was a nice surprise! Great group of people working here..definitely will be back!

My go-to dispensary! Always helpful with the best deals encompassing a wide variety of products!! Outstanding!

Everyone was friendly and helpful. The whole experience was great and very fast. I definitely will be back.

Gal who helped me (ugh, can't remember her name; sorry. [Petite redhead]), was super friendly and shared her experience and recommendation regarding my purchase. She was very friendly and genuine. I will definitely return to that location as long as they continue to employ folks like her. -Mike

Bonded, helped me with my order today and she saved me $$ and chose a better suited product than I originally was gonna get. I love this store the staff is always on point and pleasant.

Low key and quiet with a great selection of products.

Service was on point shoutout jasmine for the hookup on the fire recommendation!!will definitely be shopping again.

This place is not like other dispensaries from the vibe to the freebies and colors. (Freebies meaning pizza Friday and free drinks) The atmosphere is out of this world. Never been to a dispensary that feels like a party walking in! I love the new location! The cloud wall is top tier too

They did a fine job of taking care of my weed problem. I didn't have any ... They did. Good price for good weed.

I love this place!! The Best Gummies 2kmg for $99 I cant find a better deal!!! Thank you Key Cannabis!!!

I love the vibe, love the products too! Everyone I’ve come across in the store is really nice and helpful.

The food truck is fire good burgers & hotdogs on top of great bud to smoke!

I love coming to this place very helpful kind . I have a suggestion give people that check your id's a chair to sit on, and maybe a radio to listen to music. Nobody cares if they r sitting people r buying weed for God sake

Erica the security guard greeted me today. She is so nice and really made me feel welcomed. Coco was my budtender. She is always so friendly and kind. She is patient and always has solid suggestions. Awesome daily deals and great rewards program too. Highly recommend. 5 Stars!

This place is the best dispensary I have gone to! I drive past a few dispensaries just to come here. The staff is very knowledgeable and never makes you feel rushed while you ask questions. They are always running really good sales too so you can always get a nice deal. Also, I am in a wheelchair, and before that used and cane, and they are always helping me with doors and anything else I need. Everyone here always goes above and beyond every time I come, which is why I pass up a place I could “walk” to from my house just to come here.

I would personally like to say great job to Anthony. He greeted my wife and I as we arrived and I have to say that his positive energy was contagious

Great dispensary & service, just wished they had a better variety of brands.

These guys are so good at their jobs. This is the first dispensary I went to and I was so nervous when I walked in because I didn’t know what to do or anything but they helped me feel at ease right away and even though I spoke at a minimum they got me exactly what I needed, tailored to my needs as a patient. I’ve been sticking primarily with this dispensary location since I became a patient and have strayed very very little. Very professional informative and genuinely ready to help every person that comes in, with equal care and attention.

Joe Cool is the best hands down. Very helpful, super knowledgeable and so welcoming. I will definitely be coming back faithfully and will let all of my medical card friends know who to go see! Great person!

I didn't know this dispensary was open. I have seizures, fibro and other "nervous system" problems. They had Illicit Bruce Banner, which is wonderful for all my complaints. When I walked into the dispensary, I was put as ease because the waiting room was relaxing, even with other people sitting and waiting. You don't find this is other dispensaries. I was greeted by the person behind the counter. Very friendly staff. Rewards Program sounds very rewarding, which many dispensaries only pretend to offer . So, I have a new primary dispensary. Thank you Key Cannabis!

Highly recommended, great service, unbeatable deals. My favorite by far.

Great selection, price, and quality. This location is Cash only but does have ATMs on site.

From Latrice Bartender Jeremy is always helpful and very pleasant and knows his strains