White Nightmare is a sativa-dominant hybrid cannabis strain bred from Blue Dream and White Moonshine, known for a sweet berry and haze aroma with an earthy, hash-like aftertaste. A seed bank that sells an F2 of the line credits it to Sin City Seeds. Reported THC is around 19% to 20%, and users describe a euphoric, stimulating high with a comfortable body feel.
White Nightmare Strain at a Glance
| Type | Sativa-dominant hybrid (about 80% sativa) |
|---|---|
| Lineage | Blue Dream × White Moonshine |
| Breeder / origin | Sin City Seeds (per a seed bank’s F2 listing) |
| THC | 19–20% (typical lab range) |
| CBD | Under 1% |
| Aroma and flavor | sweet berry, haze, earthy hash, fruity, blueberry, earthy hash aftertaste, woody, candy |
| Reported effects | euphoric, energetic, happy, uplifted, focused, relaxed body |
| Best for | daytime use, creative or social plans, a mood lift |
| Flowering time | 55–65 days |
Where White Nightmare Comes From
Leafly describes White Nightmare as Blue Dream’s soaring effects and fruity flavor paired with White Moonshine’s milky resin coat, and Leafly, AllBud and the Aficionado Seed Bank listing on SeedFinder all give the same Blue Dream and White Moonshine parentage, and AllBud and Aficionado both put it at about 80% sativa. Aficionado describes its own seeds as an F2 of Sin City’s White Nightmare, crediting Sin City Seeds as the original breeder, and praises the line for large yields and a candy-like flavor.
White Nightmare has a large review base on Leafly. Leafly lists Nightmare Cookies and Sequoia Strawberry among its offspring.
White Nightmare Effects: What It Feels Like
Leafly describes a stimulating stream of euphoria and bliss that lifts mood, paired with a comfortable, relaxing body high, and its reviewers most often tag it as aroused, euphoric and energetic, followed by happy, focused and uplifted. AllBud describes a high-powered, hazy euphoria that can feel almost psychedelic at times, settling into body relaxation as it goes.
That makes it a good fit for daytime creative work, outdoor plans or social time. Some users find strong sativas edgy, and anxiety appears in a share of reviews, so start with a modest amount.
White Nightmare Terpenes, Aroma and Flavor
Leafly describes a forceful, sweet aroma of berries and haze, with a flavor that stays true to Blue Dream but finishes earthy and hash-like. Its reviewers most often pick earthy, berry and woody notes. AllBud describes sweet, fruity berry with a potent hashy, earthy aftertaste and a hazy, hashy nose that sweetens when the buds are broken up, and Aficionado lists berry with a touch of haze.
Published terpene data for White Nightmare is not available, so check the package label for lab results.
Side Effects and How to Use White Nightmare
Dry eyes and dry mouth are the most common complaints on Leafly, followed by anxiety and headaches in smaller numbers. Those reactions are more likely with large doses of an energetic sativa, so pace yourself.
With White Nightmare, as with any strain, a smaller dose usually avoids anxiety or grogginess. Our cannabis safety guide covers what to do if you take too much.
Do People Use White Nightmare for Medical Reasons?
Leafly reviewers most often mention arthritis, anxiety and PMS among their reasons for choosing White Nightmare, and AllBud reviewers list chronic pain, fatigue, migraines and low mood. These are personal reports, not clinical findings.
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 White Nightmare
- Flowering: 55–65 days
- Yield: 400–600 g/m² indoors, per Aficionado; medium per Leafly
- Environment: Indoors or outdoors (outdoor finish mid-October)
Aficionado and Leafly both list a 55 to 65 day flowering time, and Leafly gives a mid-October outdoor finish. Aficionado describes large yields and calls it a pleasure to grow. A mid-October harvest overlaps the start of the Pacific Northwest rainy season, so outdoor growers should watch for mold and consider a greenhouse.
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 White Nightmare
- Blue Dream: the berry sativa parent
- White Widow: a resin-heavy classic with an uplifting lean
- Super Lemon Haze: an energetic haze-forward sativa
- Jack Herer: a clear, energetic daytime classic
- Strawberry Cough: a berry-scented, uplifting sativa
Browse more sativa strains, the full strain directory, or our guide to cannabis strains.
More Sativa Strains to Explore
White Poison · Whitethorn Rose · Wonka Bars · Wedding Tree · Voyager 1 · Twista · All sativa strains
Where to Buy White Nightmare
Dispensary menus change every week, and White Nightmare 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 Grand Rapids, browse Grand Rapids dispensaries and check the menus at stores like Olswell-Grand Rapids and Jars Cannabis. In Chicago, browse Chicago dispensaries and check the menus at stores like Ivy Hall – Damen and Ivy Hall – Logan Square. 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.
White Nightmare FAQ
Is White Nightmare indica or sativa?
White Nightmare is a sativa-dominant hybrid, about 80% sativa according to AllBud and Aficionado Seed Bank.
What is White Nightmare a cross of?
Blue Dream crossed with White Moonshine.
Who bred White Nightmare?
Aficionado Seed Bank credits Sin City Seeds with the original White Nightmare and sells an F2 of it.
How strong is White Nightmare?
Moderately strong, with AllBud reporting about 19% to 20% THC.
What does White Nightmare taste like?
Sweet berry like Blue Dream, with a hazy note and an earthy, hash-like aftertaste.
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.
