Myrcene, Limonene and Linalool: A Grower's Guide to Terpene Profiles in Flowering Plants

Terpene profiles are shaped by which terpene synthase enzymes a plant expresses and at what relative rates. Different cultivars have different TPS gene repertoires — that is why some always produce myrcene-dominant profiles and others lean citrus or floral regardless of growing conditions. This guide covers the major terpenes found in flowering plants, how each is made and what drives its expression.

All of these terpenes are produced through the biosynthesis pathways described in our terpene science guide. The short version: monoterpenes (C10) come from the MEP pathway in plastids. Sesquiterpenes (C15) come from the MVA pathway in the cytoplasm.

Myrcene

Profile: Earthy, musky, herbal, slightly fruity. The green banana and clove note many associate with indica-dominant genetics.

Biosynthesis: Monoterpene (C10), MEP pathway. Myrcene synthase catalyzes the conversion of GPP (geranyl pyrophosphate) to myrcene in a single enzymatic step without cyclization — myrcene is an acyclic monoterpene. This relatively simple biosynthesis is part of why myrcene tends to accumulate at high concentrations in myrcene-dominant cultivars.

Expression: Myrcene is often the dominant terpene by concentration in earthy, heavy-hitting phenotypes. It is also found at meaningful concentrations in hops, bay laurel and lemongrass. Environmental conditions that support MEP pathway flux — good light, active rhizosphere, adequate temperature differential — support myrcene expression.

A note on mango: The claim that eating mango before consuming plant material increases myrcene effects is popular but not well-supported. Even if the myrcene from mango were bioavailable in this way, the amounts in fruit are modest. The mechanism proposed does not hold up to scrutiny.

Limonene

Profile: Citrus, bright, fuel-forward at high concentrations. Characteristic of sativa-leaning and citrus-dominant phenotypes.

Biosynthesis: Monoterpene (C10), MEP pathway. Limonene synthase cyclizes GPP to produce limonene. It is biosynthetically similar to myrcene — both are common monoterpenes from the same C10 precursor — but the enzymatic step involves cyclization, producing the characteristic ring structure.

Expression: Limonene is also a major component of citrus peel essential oils, dill and fennel. In plants, its concentration varies widely by cultivar and is consistently heritable. Higher temperatures tend to increase volatilization, which is why temperature differentials in late flower benefit limonene retention as much as any other monoterpene.

Notable: Limonene is one of the most studied terpenes for its biological activity. It is a registered pesticide active ingredient in some jurisdictions, used in insecticidal sprays — reflecting its natural deterrent function in plants.

Linalool

Profile: Floral, sweet, lavender-like. Calming. Found in lavender, coriander and many floral cultivars.

Biosynthesis: Monoterpene (C10), MEP pathway. Linalool synthase converts GPP to linalool through a cyclization and rearrangement step. Linalool is a tertiary alcohol monoterpene — the hydroxyl group gives it different physical and biological properties from purely hydrocarbon terpenes like myrcene and limonene.

Expression: Linalool-dominant cultivars tend to produce strongly floral, feminine aromatic profiles. Linalool is also present in many berry species, rose petals and basil. Its expression is highly cultivar-dependent — it is either present in meaningful amounts or essentially absent, with little variation based on growing conditions.

Geraniol

Profile: Rose, floral, sweet with slight citrus. Often paired with linalool in floral terpene profiles.

Biosynthesis: Monoterpene (C10), MEP pathway. Geraniol is produced directly from GPP by geraniol synthase — it is essentially the free alcohol form of the GPP precursor itself. It is also a precursor to other monoterpenes and can be converted to nerol, citronellol and farnesol through further enzymatic steps.

Expression: Geraniol appears in roses, geranium, lemongrass and citronella. In flowering plants, it tends to co-occur with linalool in floral phenotypes. Its expression supports the overall floral character of candy-profile cultivars.

Beta-caryophyllene

Profile: Spicy, woody, peppery, clove-like. Contributes depth to aromatic profiles and often balances high-limonene or high-myrcene profiles.

Biosynthesis: Sesquiterpene (C15), MVA pathway. Beta-caryophyllene synthase cyclizes FPP (farnesyl pyrophosphate) to produce the bicyclic sesquiterpene structure. Because it comes from the MVA pathway, it is regulated somewhat independently from the monoterpenes above.

Notable: Beta-caryophyllene is the only terpene known to directly interact with mammalian cannabinoid receptors, specifically CB2. It is classified as a dietary cannabinoid. This gives it a distinct status in the terpene conversation and is worth representing accurately: it binds CB2 with meaningful affinity, not CB1, which is why its effects differ from THC.

Expression: Also found in black pepper, cloves, hops and copaiba resin. Its expression tends to be stable across growing conditions, though it benefits from the same rhizosphere health and micronutrient availability as other terpenes.

Terpinolene

Profile: Piney, herbal, floral with citrus notes. Often found in sativa-dominant cultivars alongside limonene.

Biosynthesis: Monoterpene (C10), MEP pathway. Produced from GPP through terpinolene synthase. Terpinolene-dominant cultivars are often described as highly energetic in aromatic character.

Expression: Terpinolene is found in nutmeg, tea tree, cumin and various pine species. It is typically not the dominant terpene by mass but can significantly define a cultivar's character when present at meaningful concentrations alongside limonene and alpha-pinene.

How our formulas relate to terpene profiles

Our FFJ formulas are built around fruit blends associated with the metabolic conditions that support different branches of terpene biosynthesis. Tropics for myrcene-dominant profiles, Electric for limonene-forward, Candy for linalool and geraniol-dominant. The mechanism is indirect — the fruit compounds do not transfer their terpenes to the plant. The specific fruit blends support different metabolic environments that allow the plant to run its own terpene biosynthesis more effectively.

For the specific organic inputs and conditions that support each terpene profile, see our profile-specific articles: Myrcene-dominant, Limonene-dominant, Linalool and geraniol.