How to Read Cannabis Labels in Ontario (THC, Total THC & Serving Size)

Understanding cannabis labels is one of the most important parts of responsible consumption. In Ontario, licensed cannabis products are required to display clear THC information, packaging dates, and serving details.

Knowing how to interpret this information helps consumers choose products that match their comfort level and avoid overconsumption.

1. THC Percentage (For Dried Flower & Pre-Rolls)

THC percentage indicates how much THC is present relative to the total weight of the product.

• Lower percentage = milder potential intensity
• Higher percentage = stronger potential potency

For example, 20% THC flower contains more THC by weight than 15% THC flower. However, actual intensity depends on how much is consumed.

2. Total THC (For Edibles & Beverages)

Edibles and beverages do not list THC as a percentage. Instead, they show total THC in milligrams (mg) per package.

This number represents the total amount of THC contained in the product.

• Lower mg = lower overall THC exposure
• Higher mg = greater potential intensity

Always check total THC before consuming.

3. Serving Size Information

Some products indicate serving size suggestions. It is important to:

• Understand how many servings are in a package
• Start with a smaller portion if unsure
• Wait before increasing intake

Edibles typically require 30 to 90 minutes before effects begin.

4. Packaging Date

The packaging date helps consumers understand product freshness. While cannabis does not “expire” immediately, freshness may influence aroma and quality.

5. Product Format Identification

Labels clearly identify the format:

• Dried flower
• Pre-roll
• Edible
• Beverage
• Oil or capsule
• Concentrate

Each format has different onset time and duration.

Why Reading Labels Matters

• Prevents accidental overconsumption
• Helps match product to tolerance level
• Supports informed decision-making
• Ensures responsible use

Common Label Misunderstandings

Higher THC Is Always Better

Higher THC does not automatically mean a better or more suitable experience.

Total THC vs THC Per Serving

Total THC refers to the entire package, not necessarily a single portion.

Edible Dosage Is the Same as Smoking

Edibles are absorbed differently and typically last longer.

Responsible Cannabis Purchasing in Ontario

Licensed cannabis retailers in Ontario must sell lab-tested, clearly labeled products to adults 19+.

Ashario Cannabis operates licensed retail locations in North York, Aurora, and Thornton, open 365 days a year from 7AM to 11PM.

Frequently Asked Questions

What does total THC mean?

Total THC indicates the entire THC content of the package in milligrams.

Is 25% THC strong?

It indicates higher potency relative to lower percentages, but actual experience depends on dosage and tolerance.

How long do edibles take to work?

Typically 30 to 90 minutes.

Where can I buy clearly labeled cannabis in Ontario?

Ashario Cannabis operates licensed retail locations in North York, Aurora, and Thornton.