Myrcene and limonene are the two terpenes you will see most often on a hemp flower label. Myrcene smells earthy and musky and is linked to relaxing, sedating effects. Limonene smells like citrus and is linked to a brighter, more upbeat experience. Neither one works alone, and the research on both is still developing. This guide covers what each terpene is, how they compare, what the studies do and do not show, and how to use a lab report to pick flower by profile instead of by strain label.

TL;DR

• Myrcene: earthy, musky, often described as relaxing. It is the most common terpene in modern commercial cannabis flower.
• Limonene: citrus aroma, often described as uplifting. A 2024 human study found it reduced THC-related anxiety, but only selectively.
• Same formula, different structure: both are C₁₀H₁₆ monoterpenes. Aroma and behavior differ because the molecules are shaped differently.
• Evidence is early: most terpene effect claims come from animal and cell studies. Treat them as likely contributors, not guarantees.
• Check the COA: THCA flower converts to THC when heated, so cannabinoid content matters as much as terpene content.

Table of Contents

• What myrcene and limonene are
• Myrcene vs limonene at a glance
• Myrcene: the common, relaxing one
• Limonene: the bright, citrus one
• Is myrcene or limonene better?
• Is limonene an upper and myrcene a downer?
• Why indica and sativa labels fall short
• Perspective: how we read a terpene profile
• Read the COA before you choose
• THCA flower, heat and what the terpenes sit on
• Choosing hemp flower by terpene profile
• Common mistakes when comparing terpenes
• FAQ
• Sources

What myrcene and limonene are

Terpenes are aromatic compounds made by many plants, not only cannabis. They give lemon peel, pine needles and lavender their smell. In hemp flower they are produced in the same resin glands as the cannabinoids, which is why a jar’s aroma tells you something about its chemistry.

In one review of 33 cannabis chemovars, 87.1% to 99.5% of the terpene profile was monoterpenes. Both myrcene and limonene belong to that group.

The two share a molecular formula, C₁₀H₁₆, but myrcene is a linear, open-chain molecule while limonene forms a six-membered ring. That structural difference explains why they smell different and why they interact with the body through different pathways.

Where you meet them outside cannabis

Myrcene is also found in hops and lemongrass, and it is responsible for the peppery, spicy, balsam note in beer. Limonene is the main aroma of citrus peel, which is where the name comes from. If you know what a fresh orange rind smells like, you know limonene. If you know crushed hops or a ripe mango stem, you are close to myrcene.

Myrcene vs limonene at a glance

The pathway and research rows follow a comparison of the two terpenes, which also notes both are Generally Recognized as Safe by the FDA as food additives. That status applies to eating them as flavorings. It says nothing about inhaling them or about the cannabis product they come in.

Myrcene: the common, relaxing one

Myrcene is not a minor compound. Leafly reports that it is the dominant terpene in roughly 40% of tested flower samples and typically more than 20% of the total terpene profile in modern commercial cannabis.

The same source links myrcene above about 0.5% to sedative, couch-lock effects, and lower levels to a more energetic experience. That is a correlation reported across samples. It is a useful rule of thumb, not a dosage rule.

What to expect from myrcene-dominant flower

Readers and budtenders usually describe myrcene-heavy flower as:

• Calming and body-focused
• Likely to feel heavy or sleepy at higher doses
• Earthy, musky and sometimes fruity on the nose

If you want something for an evening, a myrcene-forward profile is where most people start.

Limonene: the bright, citrus one

Limonene has the better-documented human study of the two. In a 2024 double-blind trial, 15 mg of vaporized d-limonene significantly reduced self-reported anxious and paranoid states when given with 30 mg of THC, compared with 30 mg of THC alone. Johns Hopkins Medicine summarized the work for a general audience.

Read that result carefully:

• The effect was selective. The study found limonene eased anxiety and paranoia, not THC’s other effects.
• The participants were healthy adults who use cannabis intermittently, and the dose was a controlled, vaporized one.
• A jar of flower with limonene on the label does not deliver 15 mg of anything in a known amount.

Limonene is not a THC antidote. It is a compound with a promising, narrow signal.

What to expect from limonene-dominant flower

• A citrus smell as soon as you open the jar
• A reputation for a brighter, more social experience
• Often chosen for daytime use, though individual response varies

Is myrcene or limonene better?

Neither. They answer different needs, and most flower contains both along with caryophyllene, pinene, linalool and others. The better question is which one leads the profile and what else is present.

A simple framework:

1. You want to unwind at night. Look for myrcene as the top terpene.
2. You want something lighter for daytime. Look for limonene or another citrus-leaning profile near the top.
3. You are sensitive to THC-related anxiety. Start with a low dose and a balanced profile. Limonene may help, but it will not guarantee anything. Our guide to testing terpenes for anxiety in five sessions shows how to track this and check the COA.
4. You are unsure. Buy a small size of two profiles and compare them on separate days, with the same dose and setting.

Is limonene an upper and myrcene a downer?

It is a fair shorthand, but only a shorthand. Practitioners point out that clinical evidence for specific terpene effects in humans is still developing. Many of the claims come from rodent and cell studies, which show anxiolytic or sedative effects but do not prove the same result in a person smoking flower.

Three other things shape how a product feels:

• Cannabinoid content. THC, CBD, CBG and others change the experience far more than any single terpene.
• The full terpene mix. The entourage effect theory holds that compounds act together, but it is a theory under study.
• You. Tolerance, dose, food, sleep and setting all matter.

Why indica and sativa labels fall short

Many shoppers still pick by indica or sativa. Researchers argue these labels often fail to describe actual chemical composition, and that the terpene profile is a better guide to the experience. This is why we publish terpene and cannabinoid data with our products, and why we wrote about terpene profiles and cannabinoid differences in indica vs sativa THCA.

Perspective: how we read a terpene profile

We grow and sell organic hemp flower, hand-trimmed and cultivated without pesticides or synthetics. Customers often ask which terpene they should look for. Our answer is to start with the cannabinoid, then the terpenes, then the strain name.

The reasoning is simple. A jar of THCA flower is a different product from a jar of CBD flower, no matter how much limonene or myrcene is in it. Terpenes shape aroma and may shape feel, but the cannabinoid sets the strength. If you pick a citrus-smelling flower and assume it is mild, you can be surprised.

We also tell customers to treat terpene claims with some restraint. The human evidence is thin, and the best study we can point to on limonene tested one dose, in vaporized form, in healthy adults. That is useful, and it is not a promise. What we can promise is clear information: the terpene profile, the cannabinoid content and a third-party lab report, plus a 100% satisfaction guarantee if the product is not what you expected.

— Michael

Read the COA before you choose

A Certificate of Analysis from a third-party lab is the only way to confirm what is in a jar. Look for these items:

• Cannabinoid panel. Check THCA and delta-9 THC separately. The 2018 Farm Bill’s hemp definition rests on delta-9 THC at no more than 0.3% on a dry weight basis, so a label can look low in THC while the flower holds a lot of THCA.
• Terpene panel. The top three terpenes by percentage matter more than the total. A myrcene reading above about 0.5% fits the sedating pattern described earlier.
• Lab and date. The report should name the lab, the batch and the test date, and match the batch on the jar.
• Contaminants. Pesticides, heavy metals and microbials should be listed as passed.

This matters for businesses too. Resellers should request the COA for every batch of bulk flower before purchase, and compare it with what the supplier’s marketing says.

THCA flower, heat and what the terpenes sit on

Most of the flower people compare by terpene is THCA flower. THCA is not intoxicating until heated, but when you smoke or vaporize it, it converts to THC. Our article on how heat turns THCA to THC explains the chemistry, and our guide to THCA flower effects covers the onset and duration you can expect.

The CDC states that THC-containing products can have health risks however they are used, because THC can affect memory, attention, decision-making and risk-taking. A hemp label does not mean non-psychoactive. Do not drive or operate machinery after use, and talk to a doctor before use if you take medication, are pregnant or have a heart or mental health condition.

Hemp law is also moving. Federal and state rules on intoxicating hemp products have been changing, so check your state’s current rules before ordering. Our products are for adults aged 21 and over.

Choosing hemp flower by terpene profile

Once you know what you want, matching it to a product is straightforward. Our hemp flower collection lists the cannabinoid and terpene details for each strain, and the COA is available for the batch.

• For a CBD option with a citrus name: Lemon Octane CBD full-term hemp flower is available, with a smalls version for a lower-cost way to try it. Read the product page and COA for the actual terpene readings, because a strain name is not a lab result.
• For a broader CBD profile: Spectrum CBD hemp flower full-term is another option.
• For THCA flower: Hash Burger indoor THCa flower is one to review if you are comparing indoor THCA.
• For convenience: pre-rolls and vapes cover other formats.

Orders over $85 ship free. Resellers can see bulk options on our wholesale collection.

Common mistakes when comparing terpenes

• Treating one terpene as the whole story. Look at the top three and the cannabinoids.
• Trusting the strain name. Names are marketing. The COA is data.
• Ignoring dose. A new product at a full dose is the usual cause of a bad experience. Start low.
• Expecting a medical result. Terpene wellness claims are extrapolated from animal work in many cases. Do not use hemp flower in place of treatment.
• Skipping freshness. Terpenes are volatile, and old, dry flower loses aroma. Store flower in a sealed container away from heat and light.

For a wider view of the compounds in hemp, see our guide to cannabinoids in hemp and how to buy safely.

FAQ

Is myrcene or limonene better?

Neither is better. Myrcene is associated with relaxation and limonene with a brighter mood, so the right one depends on when you plan to use the flower and how you respond. Most products contain both, so compare the full terpene panel and the cannabinoid content.

Is limonene an upper or a downer?

Limonene is generally described as uplifting, not sedating. The best human data is a small 2024 study in which vaporized d-limonene reduced THC-related anxiety and paranoia, but the evidence is early and individual response varies. Do not expect it to act like a stimulant.

Does myrcene make you sleepy?

It often does at higher levels. Leafly’s review links myrcene above roughly 0.5% to sedative, couch-lock effects. Keep in mind that the cannabinoids, dose and your own tolerance also decide how sleepy you feel.

Can I combine myrcene and limonene?

Yes. They occur together in many flower profiles, and the balance between them shapes the aroma and likely feel. If limonene leads and myrcene is moderate, many people describe a relaxed but clear experience, though this is anecdotal and not a proven outcome.

Sources

• Leafly: What is myrcene and what does this cannabis terpene do?
• StrainElite: Limonene vs Myrcene compared
• PMC: Vaporized d-limonene selectively mitigates the acute anxiogenic effects of THC
• Johns Hopkins Medicine: chemical found in cannabis may reduce anxiety-inducing effects of THC
• PMC: Analgesic potential of terpenes derived from Cannabis sativa
• CDC: Cannabis frequently asked questions
• FDA: Hemp production and the 2018 Farm Bill

Recommended

• Terpene Profiles in THCA Concentrates: How They Affect Flavor
• THCA Flower Terpene Profiles: Complete Guide Cannabis Aroma Chemistry
• THCA Flower Strain Guide: Understanding Terpene Profiles and Effects
• THCA Flower Terpenes Guide: How They Create Different Flavors