How to Read a Cannabis Label: THC %, Terpenes, and More Explained
Cannabis packaging is full of important info—but only if you know how to read it. This guide breaks down how to understand THC %, terpenes, cannabinoids, and what really matters when buying cannabis.
How to Read a Cannabis Label: THC %, Terpenes, and More Explained
Standing in a dispensary trying to choose between 20 different strains? Those tiny labels on the jars and packages can actually tell you a lot—if you know how to read them.
This guide will help you confidently decode cannabis product labels so you can shop smarter and get the effects you’re looking for.
The Most Common Info on Cannabis Labels
THC Percentage
This is the primary psychoactive compound in cannabis.
- Low THC: under 10%
- Mid-range: 10–20%
- High THC: 20%+
Myth: Higher THC ≠ better high. A lower-THC strain with strong terpenes can be just as effective—and less overwhelming.
CBD Percentage
Non-psychoactive, often calming and anti-inflammatory.
- Look for CBD-rich or 1:1 strains if you’re sensitive to THC or using cannabis for anxiety/pain.
Cannabinoid Profile
Labels may include other cannabinoids like:
- CBG (focus, gut health)
- CBN (sedation)
- THCV (appetite suppression, focus)
Terpene Profile
These aromatic compounds shape your high. Some common ones:
- Myrcene: Sedating, couch-lock
- Limonene: Uplifting, citrus
- Linalool: Calming, lavender
- Pinene: Alertness, pine scent
Pro Tip: Terpenes matter just as much as THC for effect. A high-THC product with no terps may hit dull.
Harvest & Test Date
Always check for freshness. Older flower = dried out, lost potency.
Aim for products tested within the last 6 months.
Batch Number & Lab Testing
Look for QR codes or links to Certificates of Analysis (COAs) that show:
- Potency
- Contaminant levels (pesticides, mold, heavy metals)
- Compliance with your state’s regulations
What’s Not Always on the Label (But Should Be)
- Effect expectations (e.g., relax, uplift)
- Onset time for edibles and tinctures
- Source and grow method (indoor, sun-grown, organic)
- Dominant terpenes (not just a few buzzwords)
Example Breakdown
Label Says:
THC: 22.4% | CBD: 0.1%
Dominant Terpenes: Myrcene, Linalool
Batch: 12345 | Test Date: Nov 2024
What it means:
You’re in for a mellow, body-focused high—ideal for nighttime or stress relief. Potent, but not necessarily overwhelming if used in moderation.
Final Thoughts: Don’t Judge by THC Alone
Learning to read cannabis labels empowers you to find products that work for you—not just the ones hyped for high THC. Look at the full profile. Ask questions. And if in doubt, start low and go slow.
Need help choosing a product at your dispensary? Ask a budtender to explain the label with you—or snap a photo and research at home.
Disclosure: No affiliate links in this post—just good education for smarter cannabis shopping.