Gina S
December 27, 2025
The team here is so awesome. Not only are they friendly but they are very knowledgeable in the products they sell. Thank you for showing consistent hospitality every time I visit.

Mystic Greenz is a cannabis dispensary located in Decatur, Illinois, offering a wide selection of premium products including flower, edibles, vapes, and concentrates. They cater to both recreational and medical customers, providing a curated menu for all types of users.
360 South Green Mount Road
Belleville, IL 62221
$$ · Recreational & Medical
Medical patients skip recreational taxes, get higher purchase limits, and can shop at age 18+. Most people get approved online in about 20 minutes.
4.8
411 reviews
Gina S
December 27, 2025
The team here is so awesome. Not only are they friendly but they are very knowledgeable in the products they sell. Thank you for showing consistent hospitality every time I visit.
Tim Ries
December 9, 2025
Just had an amazing experience purchased a cart and did not get a battery for a unique set up manager realized that they did not help get the battery needed to utilize the cart given a free cart with the battery. Awesome Team.
Jacob Barrett
November 26, 2025
I have visited dispensaries nationwide, and this is the worst. Every time I place an order that is an item on sale, the item is always out of stock when I go to pick up. No help to get something different. No discount for another item because of their slow website. Just nothing. They use fake sales to get you into the store and do nothing about it. I'd rather drive an hour out of my way than to go here again.
Joe Pipik
November 19, 2025
First time going there as friends told me about the place. I am a veteran and everything was fine until checkout. Instead of giving me the 25% off as stated on the website for veterans for the month of November they said it was only 15%. Not sure I will go back. I should have talked to a manager at the time but I was in a hurry.
Peter Kennedy
April 29, 2025
It’s my local dispo and I love it so much, I know a lot of the names of the salesmen and women, its just so small-world whenever I walk in!
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Levoit Core 300-P
143 CFM · 219 sq ft
$80–$110

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246 CFM · 361 sq ft
$160–$210

Austin Air HM400
400 CFM · 1,500 sq ft
$475–$595
Tourists 21+ can purchase recreational cannabis but are limited to half the resident amounts (15g flower, 2.5g concentrate, 250mg THC edibles). A valid government-issued ID from any state is accepted. Mystic Greenz is a recreational & medical dispensary, so no medical card is needed for adult-use purchases.
In Illinois, recreational customers can purchase up to Residents: 30g flower, 5g concentrate, 500mg THC in edibles. Non-residents: half those amounts (15g, 2.5g, 250mg).. Mystic Greenz may have additional product-specific limits — check with the dispensary for details.
Mystic Greenz is cash only. Check with the dispensary for nearby ATM locations.
Mystic Greenz does not currently list delivery as an option. Available options include in-store.
Mystic Greenz is located at 360 South Green Mount Road, Belleville, IL 62221. The dispensary is open 7 days a week. Hours vary by day — check the hours section above for today's schedule.
Medical patients in Illinois save ~9% on cannabis purchases, get higher purchase limits, and access dispensaries at age 18+. Most patients can get approved online in about 20 minutes.
✓ Board-certified physicians · ✓ 4.8★ rated · ✓ 500,000+ patients approved
Get My Illinois Medical CardLast updated January 15, 2026
Illinois legalized recreational cannabis in 2019 through the Cannabis Regulation and Tax Act, becoming the first state to do so through the legislature (rather than ballot measure). Recreational sales began January 1, 2020. Illinois also has a medical program dating back to 2013.
Recreational: 21+
Medical: 18+
Rec: Residents: 30g flower, 5g concentrate, 500mg THC in edibles. Non-residents: half those amounts (15g, 2.5g, 250mg).
Med: 2.5 oz of flower per 14-day period
Prohibited in most public places. Cannot consume in vehicles, on school grounds, near anyone under 21, or where smoking is banned. Some municipalities may allow consumption lounges.
Medical patients only — up to 5 plants per household in a locked, enclosed space. Recreational users may not grow at home.
Allowed
Recreational cannabis is taxed based on THC content: 10% for products with ≤35% THC (flower), 20% for infused products, and 25% for products with >35% THC (concentrates). Plus 6.25% state sales tax and local taxes (up to 3%). Medical cannabis is taxed at 1% state sales tax only.
Tourists 21+ can purchase recreational cannabis but are limited to half the resident amounts (15g flower, 2.5g concentrate, 250mg THC edibles). A valid government-issued ID from any state is accepted.
Disclaimer: Cannabis laws change frequently. This information was last updated on January 15, 2026. Always verify current laws with official state sources before making any decisions. This guide is for informational purposes only and does not constitute legal advice.