Jack Frost is a balanced hybrid cannabis strain built from White Widow, Northern Lights #5 and Jack Herer, known for a sweet, piney lemon aroma and an uplifted, creative high. SeedFinder credits the seed line to Goldenseed, which added a wild Rainbow Kashmiri to the mix, though most dispensary listings name no breeder. THC usually lands around 20% to 23%, and the strain is named for its heavy, frosty coat of resin.
Jack Frost Strain at a Glance
| Type | Balanced hybrid |
|---|---|
| Also known as | Jackfrost, JF |
| Lineage | White Widow × Northern Lights #5 × Jack Herer |
| Breeder / origin | Goldenseed (per SeedFinder); many retail listings name no breeder |
| THC | 20–23% (typical lab range) |
| CBD | Under 1% |
| Dominant terpenes | Terpinolene, Myrcene, Beta-caryophyllene |
| Aroma and flavor | pine, citrus, lemon, earth, light skunk, sweet, woody, lime |
| Reported effects | euphoric, uplifted, creative, happy, focused |
| Best for | daytime use, creative work, social settings |
Where Jack Frost Comes From
Jack Frost is named for how it looks: buds so covered in trichomes that they seem dusted with frost. Its genetics draw on three famous Dutch-era strains. Leafly’s description and AllBud both list White Widow crossed with Northern Lights #5, while Leafly’s genetics section and SeedFinder add Jack Herer to the picture. In other words, it is a three-way blend of Jack Herer, White Widow and Northern Lights #5, and different sources simply list two of the three.
SeedFinder’s breeder entry belongs to Goldenseed, which says it spent about five years refining the line for potency, bag appeal and aroma, and later crossed it with a wild Rainbow Kashmiri. The breeder reports a THC result of 22.6% and so much surface resin that the flower can be hand-rubbed into charas. Weedmaps listings note that the original creator is often disputed, so treat the Goldenseed version as the best documented of several Jack Frost cuts.
Leafly lists Blue Frost as an offspring, and SeedFinder also traces Frost-Wreck and Jack Diesel back to it. Reviewers on both major databases describe it as hard to find, which is why it is usually a treat when it shows up on a menu.
Jack Frost Effects: What It Feels Like
Users most often describe Jack Frost as euphoric, uplifted and creative. The Jack Herer side shows in a bright, clear-headed start that many reviewers say helps with focus and conversation. Leafly calls the overall effect mostly energizing, and AllBud reviewers add a mild layer of body relaxation underneath that keeps it from feeling jittery.
That combination makes it a daytime or early evening strain for most people, good for creative projects, chores with music on or time with friends. A few AllBud reviewers warn that newer consumers should go slowly, since the cerebral side can tip into anxiety at larger doses.
Jack Frost Terpenes, Aroma and Flavor
Expect pine, citrus and earth on the nose, with a sweet, woody quality that Leafly’s description singles out and a hint of lemon. AllBud reviewers describe a mild skunky edge in the jar, then earthy, woody and piney flavors on the inhale, with sweet citrus and occasional mint or lime on the exhale.
Leafly’s lab data shows terpinolene as the leading terpene, followed by myrcene and caryophyllene. Terpinolene is common in Jack Herer-type strains and gives that fresh, piney fruit note, myrcene adds an earthy depth, and caryophyllene brings a little pepper to the finish.
- Terpinolene: fruity, piney and herbal, common in classic sativas
- Myrcene: earthy, musky and herbal, also found in mango and hops
- Beta-caryophyllene: peppery and spicy, also found in black pepper and cloves
Terpene levels vary from grower to grower and batch to batch, so check the lab label on the package. Learn more in our guide to cannabis terpenes.
Side Effects and How to Use Jack Frost
Dry eyes and dry mouth are the most common complaints. Some users report paranoia, anxiety or dizziness, mostly after taking too much at once, which fits a strain with a strong head high. Start with a small amount, especially if you are sensitive to racy sativas.
How strong Jack Frost feels depends on the batch, your tolerance and how you consume it. Start low, go slow, and read our guide to dosing cannabis.
Do People Use Jack Frost for Medical Reasons?
On Leafly, the reasons readers most often give for choosing Jack Frost are stress, low mood and anxiety, each mentioned by roughly 30% to 37% of those who answered. AllBud reviewers also mention fatigue and low appetite. These are personal reports, not proof that the strain helps any condition.
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.
Growing Jack Frost
- Environment: Indoor or outdoor; sold as feminized seed by Goldenseed
Goldenseed lists Jack Frost for both indoor and outdoor growing and sells it as feminized seed. The breeder highlights unusually heavy resin production, which is the source of the name and makes it a good choice for hash. Detailed flowering time and yield figures are not published in the sources we checked, so follow the seed bank’s sheet for your specific pack.
Home-grow rules depend on the state: adults can grow at home in states such as California (six plants per residence), Michigan (12 per residence) and Oregon (four per household), while Washington and Illinois allow home growing only for registered medical patients. Check your state in our cannabis laws by state guide before you plant anything.
Strains Like Jack Frost
- Jack Herer: a parent, with the same bright, piney terpinolene profile
- White Widow: a parent, known for the same heavy frost
- Northern Lights #5: a parent that adds the body relaxation
- Super Silver Haze: another uplifting, resin-heavy Dutch-era hybrid
- Trainwreck: an upbeat, piney hybrid with a similar creative push
Browse more hybrid strains, the full strain directory, or our guide to cannabis strains.
More Hybrid Strains to Explore
Jealousy · Jenny Kush · Jet Fuel Gelato · Jack Flash · Inzane Auto · Ice Wreck · All hybrid strains
Where to Buy Jack Frost
Dispensary menus change every week, and Jack Frost 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 Eugene, browse Eugene dispensaries and check the menus at stores like Green Health Eugene and Piff Dispensary Eugene. In Seattle, browse Seattle dispensaries and check the menus at stores like Shawn Kemp’s Cannabis SoDo and Greenworks N.W.. 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.
Jack Frost FAQ
Is Jack Frost indica or sativa?
Jack Frost is a balanced hybrid, listed by AllBud at about 50% indica and 50% sativa. Users describe it as mostly energizing and creative.
What is Jack Frost a cross of?
It combines Jack Herer, White Widow and Northern Lights #5. Some sources list only two of the three, and Goldenseed’s version also adds a wild Rainbow Kashmiri.
Who bred Jack Frost?
SeedFinder credits Goldenseed. Most dispensary listings name no breeder, and several different Jack Frost cuts exist.
How strong is Jack Frost?
Expect around 20% to 23% THC. Leafly lists about 20%, and AllBud and Goldenseed report about 22.6%.
What does Jack Frost taste like?
Sweet, woody and piney with lemon and citrus, plus an earthy base and sometimes a hint of mint or lime.
Is Jack Frost good for beginners?
It can work for beginners in small amounts, but reviewers warn that its strong head high can cause anxiety at larger doses.
Where is Jack Frost usually sold?
Look for it as dispensary flower, pre-rolls and live resin products, often from local craft growers. It is not on every menu, so check online before you go.
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.
