CBD vs CBG: Understanding the Differences

What Is CBD?

CBD is the most abundant non-psychoactive cannabinoid found in mature hemp flower. It's well-researched, widely used overseas and starting to become more popular here in New Zealand as a medical cannabis prescription, usually as an MCT oil based tincture.

Key characteristics of CBD:

• Non-intoxicating — does not produce a "high"
• Interacts primarily with the endocannabinoid system indirectly (does not bind strongly to CB1 or CB2 receptors)
• Well-documented for supporting relaxation, sleep, and discomfort management
• CBD is very good for inflammatory conditions
• Available in a wide range of cultivars at varying concentrations

What Is CBG?

CBG is often called the "mother cannabinoid" because it's the chemical precursor from which CBD, THC, and other cannabinoids are synthesised during the plant's growth cycle. By the time most hemp plants reach harvest, CBG levels are typically low — which is why CBG-dominant cultivars require careful breeding and sometimes early harvesting, cultivar dependent. Our Mando CBG took around five years to develop and stabilise.

Key characteristics of CBG:

• Also non-intoxicating
• Binds more directly to CB1 and CB2 receptors than CBD
• Associated with focus, alertness, and mood support
• Emerging research suggests potential for gut health, neuroprotection, and antibacterial properties
• Generally found at lower concentrations than CBD in standard cultivars

CBD vs CBG: Side-by-Side

Vaping Hemp Flower with a Prescription: What to Expect

In New Zealand, medicinal cannabis — including hemp flower — requires a valid prescription from an authorised prescriber. If your prescription includes dried flower for vaporisation, here's what the experience typically involves.

Why vaporisation?
Vaporising flower (rather than combusting/smoking it) heats the material to a temperature that releases cannabinoids and terpenes as vapour without producing the harmful byproducts of combustion. This makes it one of the fastest-acting delivery methods available.

Onset and duration:

• Effects are typically felt within 2–10 minutes of inhalation
• Duration is generally 1–3 hours, depending on the cannabinoid profile, dose, and individual metabolism

CBD-dominant flower when vaped:

• Produces a sense of calm and body relaxation
• May support sleep onset when used in the evening
• No intoxication — patients can generally remain functional
• Mild throat sensation; terpene-rich cultivars may have a pronounced flavour

CBG-dominant flower when vaped:

• Often described as clearer and more uplifting than CBD
• May support daytime use — some patients report improved focus and reduced mental fog
• Less sedating than high-CBD cultivars
• Still non-intoxicating

Temperature matters:
Most cannabinoids vaporise between 170°C–210°C. A lower temperature (around 170–185°C) tends to preserve terpenes and produce a lighter, more flavourful vapour. Higher temperatures (190–210°C) extract more cannabinoids but can produce a harsher experience.

A Note on Compliance

All medicinal cannabis products in New Zealand must be prescribed by a registered medical practitioner and sourced from an approved supplier. Self-medicating with hemp flower outside of a prescription framework is not legal. Always follow your prescriber's guidance on dosing and administration.

Final Thoughts

CBD and CBG each bring something distinct to the table. CBD remains the cornerstone of most medicinal hemp prescriptions — well-studied, broadly effective, and widely available. CBG is an exciting frontier, particularly for patients seeking daytime support without sedation.

As cultivar genetics continue to advance, we're seeing more options that combine both cannabinoids in meaningful ratios — giving prescribers and patients greater precision in their treatment approach.

Interested in the genetics behind high-CBD and high-CBG cultivars? Explore our seed range to see what's available for licensed growers in New Zealand.