Lantz is a balanced hybrid cannabis strain bred from Green Lantern and Ridgeline Runtz, known for a sweet grape-and-lime candy nose cut with fuel and pine. It was bred by Jason Gellman of Ridgeline Farms in Southern Humboldt and took first place in Mixed Light plus the Breeder’s Cup at the 2023 Emerald Cup. Leafly lists it around 25% THC, and some medical flower in Canada has tested near 30%.
Lantz Strain at a Glance
| Type | Balanced hybrid |
|---|---|
| Also known as | Ridgeline Lantz |
| Lineage | Green Lantern × Ridgeline Runtz |
| Breeder / origin | Ridgeline Farms (Jason Gellman), Southern Humboldt, California |
| THC | 25–31% (typical lab range) |
| Aroma and flavor | lime custard, grape candy, fuel, pine, spearmint, grape taffy, gas, earthy finish |
| Reported effects | focused, creative, uplifted, relaxed later |
| Best for | afternoon use, creative projects, flavor-focused smokers |
Where Lantz Comes From
Lantz comes from Ridgeline Farms, a small Southern Humboldt operation in California’s Emerald Triangle run by Jason Gellman. Gellman and his father, a second-generation farmer, spent roughly four years on the project, crossing two of the farm’s own Emerald Cup winners: Green Lantern, which won at the Cup in 2018, and Ridgeline Runtz, which won in 2019. High Times reports that the final keeper was picked from six plants, and Gellman has estimated that Ice Cream Cake, a strain he worked with over the years, accounts for about 10% of the cut’s traits.
The payoff came at the 2023 Emerald Cup, where Lantz won first place in the Mixed Light flower category and the Mixed Light Breeder’s Cup. High Times also reported a third-place finish for best taste at Zalympix that year. Gellman has said he prefers two careful runs a year to large acreage, which helps explain why Lantz built a reputation before it became widely available.
Since then the cut has spread well beyond Humboldt. Cookies carries it as Ridgeline Lantz, it has appeared in Canadian medical flower and Michigan vape lines, and Leafly lists Ridgelion and Ridgeline Throbber among its offspring. A limited Lantz x Grape Gas cross called Blueberry Caviar was announced for fall 2025.
Lantz Effects: What It Feels Like
Leafly reviewers most often describe Lantz as focused, creative and uplifted, and Leafly rates the effect as mostly energizing. A Certified Ganjier review in Fat Nugs described an early burst of energy and sharper focus that suited chores or a work session, followed by a gentle slide toward relaxation and some sleepiness later in the evening. That reviewer also noted the effect fades relatively quickly compared with heavier hybrids.
That arc makes Lantz a good afternoon or early evening strain: lively enough for a project or conversation, soft enough to wind down after. Retail descriptions vary, with some calling it a 50/50 hybrid and Cookies leaning it toward relaxing, so expect some batch-to-batch difference. With THC commonly in the mid-20s or higher, newer consumers should start with a small amount.
Lantz Terpenes, Aroma and Flavor
Lantz is a flavor strain first. The Fat Nugs review compared the nose to a creamy Key lime pie, with sweet grape underneath and touches of spearmint, pine and earth, all sitting on a strong gas note. Leafly users list tree fruit, diesel and blue cheese, and Cookies mentions sweet candy and earthy pine.
On the inhale expect grape candy and pine; the exhale brings a faint spearmint coolness and an earthy, sweet finish, with grape taffy showing up as a joint burns down. Leafly does not publish a terpene breakdown for Lantz, so we have not listed one.
Side Effects and How to Use Lantz
Leafly reviewers mention headache, dizziness and dry mouth most often. Because Lantz commonly tests in the mid-20s or higher, those effects are most likely with large doses. Drink water, start with a puff or two and wait before going back for more.
If you are new to Lantz, start with one small inhalation or 2.5 mg in an edible and wait before taking more; see our dosing guide.
Do People Use Lantz for Medical Reasons?
On Leafly, people most often mention reaching for Lantz for anxiety, low mood and trouble sleeping. These are user reports, not medical evidence, and anyone sensitive to strong THC should be cautious, since high-potency flower can make anxiety worse for some people.
These are user reports, not clinical findings. For what research actually supports, see our cannabis health and research section, and talk to your doctor before using cannabis for a health condition.
Strains Like Lantz
- Runtz: the candy-sweet family behind Ridgeline Runtz
- Ice Cream Cake: part of the background Gellman credits in Lantz
- Zkittlez: another fruit-candy cultivar with a calm-energetic balance
- Gelato: sweet dessert profile with a similar balanced hybrid feel
- Sour Diesel: for smokers who want more of the fuel side
Browse more hybrid strains, the full strain directory, or our guide to cannabis strains.
More Hybrid Strains to Explore
Layer Cake · Lemon Cherry Gelato · Lemon Cookies · Lady Liberty · La Bomba · Kush Mints · All hybrid strains
Where to Buy Lantz
Dispensary menus change every week, and Lantz may be sold under its own name, as a cross or as a pre-roll or vape. The fastest way to find it is to check store menus online before you go. In Bend, browse Bend dispensaries and check the menus at stores like Green Cross Cannabis Emporium Bend and CannaVida. In San Francisco, browse San Francisco dispensaries and check the menus at stores like Harborside and Eaze San Francisco Haight. You can also browse licensed dispensaries in every state we cover. Adults 21 and older can buy with a valid photo ID; see cannabis laws by state for purchase limits.
Lantz FAQ
What is Lantz a cross of?
Lantz is a cross of Green Lantern and Ridgeline Runtz, two earlier Emerald Cup winners from Ridgeline Farms. Breeder Jason Gellman also credits Ice Cream Cake for about 10% of its traits.
Who bred Lantz?
Jason Gellman and his father bred Lantz at Ridgeline Farms in Southern Humboldt, California, over roughly four years.
Is Lantz indica or sativa?
Lantz is a hybrid. Leafly rates its effect as mostly energizing, while some retailers lean it toward relaxing, so most people treat it as balanced.
How strong is Lantz?
Leafly lists Lantz around 25% THC, and some Canadian medical flower has been labeled 29–31%. It is strong enough that beginners should start low.
What awards has Lantz won?
Lantz won first place in Mixed Light flower and the Mixed Light Breeder’s Cup at the 2023 Emerald Cup, and High Times reported a third place for best taste at Zalympix the same year.
What does Lantz taste like?
Lantz tastes like grape candy and pine with a strong gas note, a hint of spearmint and a sweet, earthy finish. Reviewers often compare the nose to Key lime pie.
For adults 21+ in legal states. Strain information reflects breeder descriptions, lab data and user reports; effects vary by person and batch. Not medical advice.