Early Black Friday SaleAll 7 courses $199 through Cyber Monday, then $299 · Discount auto-applied at checkout16Days04Hrs00Min06SecGet the offer
Tall outdoor cannabis plant growing in a trellised row at a Colorado farm

Blueberry Muffin strain

Bred by Humboldt Seed Co. · Blueberry × Purple Panty Dropper

Also known as Blueberry Muffins

Strain facts

Checked Oct 21, 2026 · 5 sources

Blueberry Muffin is a hybrid that's easy to grow. It was bred by Humboldt Seed Co. from Blueberry and Purple Panty Dropper. Its THC is about 18% (sources say 16–20%), milder than 76% of the 2,337 strains in our database that list THC. It flowers in about 6.5 weeks (sources say 6–9 weeks).

Type
Hybrid
THC
About 18%16–20% across 3 sources
CBD
About 1%1% across 2 sources
Top terpenes
  1. Caryophyllene peppery, spicy
  2. Myrcene earthy, musky
  3. Limonene citrus
Commonly reported effects
Relaxed, tingly, happy, euphoric and giggly
Flavors
Berry, vanilla and sweet
Breeder
Humboldt Seed Co.
Grow difficulty
Beginner2 sources agree
Flowering
About 6.5 weeks6–9 weeks across 3 sources; the breeder lists 6.5 weeks

Free Blueberry Muffin grow sheet (PDF)

The grow facts from this page on one printable page, with a blank grow log for your plant.

5 sources for this profile
  1. CTU strain dataset (public strain listings)

Grow facts

  1. SeedFinder (breeder listing: Humboldt Seed Co.) Flowering and grow setting
  2. AllBud (strain database) CBD and THC
  3. Crop King Seeds (seed bank) CBD, difficulty, flowering, THC, yield indoor and yield outdoor
  4. Zamnesia (seed bank; breeder: Humboldt Seed Company) Difficulty, flowering, height and grow setting

Grow facts come from the breeder first, then seed banks and strain databases. With 2 sources we show the range and the middle; with 3 or more, the range and the median, after leaving out values far from the rest. The breeder's own value is the anchor, unless it is far from every other source (outside their range and more than 20% from their median); then we show the full range and the median of all of them. A fact from a single source is marked "1 source", and a fact no source lists is left out. Yields are converted to one unit: indoor per square meter, outdoor per plant.

CTU writes every profile from these facts; we do not copy other sites' descriptions. Values that are a generic default in the source data are left out. Last checked Oct 21, 2026.

Source: CTU strain dataset (public strain listings and breeder info, checked by CTU), verified Oct 2026. Potency, flavor and effects vary by grower, batch and plant. Facts no source lists are left out.

How to grow Blueberry Muffin

The grow facts a breeder or public strain listing gives for Blueberry Muffin.

Flowering time
About 6.5 weeks6–9 weeks across 3 sources; the breeder lists 6.5 weeks. Faster than 99% of strains with a listed time
Yield indoor
About 500 g/m²1 source
Yield outdoor
About 500 g per plant400–600 g per plant (14–21 oz) · 1 source
Plant height
About 80 cm1 source
Difficulty
Beginner2 sources agree. One of 461 beginner-rated strains
Grow setting
Indoor, outdoor and greenhouseFrom the breeder · 2 sources

Flowering window (weeks after the switch to 12/12)

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14

Sources: the breeder, seed banks and strain databases listed under sources, checked Oct 2026. Percentages compare with every strain in our database that lists the same fact.

Learn to grow Blueberry Muffin: Indoor & Outdoor Growing course, $199

About Blueberry Muffin

Blueberry Muffin is an indica-dominant hybrid from Humboldt Seed Co., bred by crossing Blueberry and Purple Panty Dropper. It offers a THC content around 20% and showcases dense, purple-tinged buds with a distinctive sweet, bakery-like aroma. This strain performs best in controlled indoor environments due to its strong training response and benefits from canopy management to maximize its high yield potential.

Effects people report

The high begins with a gentle uplifting sensation that enhances mood and creativity, progressing into a relaxed and tingly state without heavy sleepiness. Effects generally last 2 to 3 hours, making it suitable for late afternoon or early evening use. Harvesting at a mixed trichome maturity balances cerebral uplift with calming body effects.

Flavor and aroma

On opening the jar, the aroma is reminiscent of fresh baked muffins with prominent sweet and berry notes accented by vanilla and buttery undertones. The inhale reveals a smooth, sweet flavor dominated by blueberry and vanilla, while the exhale finishes creamy with hints of butter and subtle earthiness. Proper curing enhances the dessert-like terpene profile and smooth smoke experience.

Growing notes

Blueberry Muffin grows well both indoors and outdoors but shows its best performance indoors where environmental factors can be tightly controlled. Indoor growers benefit from SCROG and LST training to manage its strong stretch and promote even canopy development. Outdoors, it thrives in dry, warm climates like Mediterranean zones, producing large yields with proper canopy management. The dense buds require vigilant airflow and humidity control, especially keeping RH below 50% during late flowering to prevent mold. Temperature sensitivity suggests avoiding spikes above 85 deg F to preserve terpene profiles. Nutrient sensitivity dictates a conservative feeding schedule to prevent lockout. Overall, yield optimization hinges on early training and maintaining stable environmental conditions throughout the 9-10 week flowering period.

Blueberry Muffin's strong stretch during early flowering requires timely topping and SCROG training to maintain an even canopy and optimize yield. Its high bud density demands excellent airflow and humidity control below 50% to prevent mold, especially under indoor conditions where moisture can accumulate.

Grower tips

  • Start training with LST and topping by week 3 of veg to control high stretch
  • Maintain humidity between 40-50% during flower to prevent mold
  • Use SCROG indoors to maximize light penetration and yield
  • Keep temperature below 85 deg F to protect terpene integrity
  • Ramp nutrients slowly starting at 0.8 EC to avoid nutrient burn
  • Ensure strong airflow and defoliation to reduce dense bud mold risk

Common mistakes

  • Overwatering early causing root issues and slow growth
  • Overfeeding in flower leading to nutrient lockout and nutrient burn
  • Failing to control late-flower humidity above 50% causing bud rot in dense colas
  • Delaying topping past week 3 of veg resulting in uneven canopy and reduced yields

Who should grow Blueberry Muffin?

Indoor growers using topping or SCROG who can maintain strict humidity and temperature control will excel with Blueberry Muffin due to its strong stretch and mold sensitivity. Additionally, growers in dry, warm Mediterranean climates outdoors will find it rewarding if they manage canopy density and airflow carefully to prevent mold issues.

How it compares

Compared to Blueberry Cupcake, Blueberry Muffin has a longer flowering time but offers higher yields and a more pronounced sweet berry flavor. Versus Purple Panty Dropper, it shows a denser bud structure and stronger resin production, making it better for extract-focused growers. Squirt shares similar genetics but flowers faster and is slightly easier to manage indoors.

Blueberry Muffin FAQ

What is the THC level of Blueberry Muffin?

Blueberry Muffin typically has a THC level around 20%, placing it in the higher potency range. This concentration allows for noticeable psychoactive effects without overwhelming intensity, suitable for growers targeting a strong hybrid.

Is Blueberry Muffin indica or sativa?

Blueberry Muffin is an indica-dominant hybrid, inheriting relaxing and calming traits from its Blueberry and Purple Panty Dropper parents. This classification informs growers about its growth pattern and expected effects during cultivation and consumption.

How long does Blueberry Muffin take to flower?

This strain flowers within 6 to 9 weeks, which is longer than average for hybrids but allows development of dense, resinous buds. Growers should plan their schedules accordingly to ensure harvest timing aligns with desired effects.

Is Blueberry Muffin easy to grow?

Blueberry Muffin requires moderate growing experience due to its sensitivity to humidity and nutrient levels, as well as its strong stretch. Successful cultivation involves careful environmental control and training techniques like topping and SCROG to maximize yield and prevent mold.

What does Blueberry Muffin taste like?

Blueberry Muffin has a sweet, dessert-like flavor dominated by blueberry and vanilla notes with a creamy, buttery finish. Proper curing enhances these flavors, making the smoke smooth and enjoyable with subtle earthy undertones.

Blueberry Muffin family tree

Parents and the strains bred from it, from published lineage.

This strain

Blueberry MuffinHybrid · 16–20% THC · 6–9 wk

Bred from it

SquirtBlueberry Muffin x Tangie
Apple BlossomBlueberry Muffin x Dream Queen
Modified MuffinBlueberry Muffin x GMOG
Purple Mountain MajestyTrainwreck x Blueberry Muffin
Blueberry FrostingBlueberry Muffin x Vanilla Frosting

Similar strains

Matched on shared parents, top terpenes, type and THC. Never on medical use.

Hybrid

Avalon

THC
18.7–23%
Flowering
6.5 wk
Effect
Uplifted
Save
Hybrid

Berry Bomb

THC
15–20%
Flowering
6–8 wk
Terpene
Myrcene
Effect
Relaxed
Difficulty
Beginner
Save
Hybrid

Berry Chill

THC
16–22%
Flowering
8–9 wk
Effect
Focused
Difficulty
Intermediate
Save
Hybrid

Berry Gang

THC
23–30%
Flowering
8–9 wk
Effect
Relaxed
Difficulty
Intermediate
Save

Hybrid strainsCaryophyllene strainsBerry strainsStrains bred from Blueberry

Where to buy

Find licensed dispensaries in your state

Only state-licensed stores, checked against official license lists.

Is cannabis legal where you live?

Grow it

How to grow Blueberry Muffin

Flowering time, height and difficulty from the sources, then the full method in the Growing course.

Related strains

Parent: Blueberry

5 database strains list it as a parent. All strains A–Z

Medical Disclaimer
The information on this website is for educational purposes only and is not intended as medical advice. Always consult a qualified healthcare professional.
Legal Compliance Disclaimer
Cannabis remains illegal under U.S. federal law. Education provided is intended only for jurisdictions where cannabis activity is legal. Users are responsible for understanding local laws.
Guarantee
7-day money-back guarantee · Refund Policy
  • Cannabis Training University 600 17th St, Suite 2800 Denver, CO 80202
© 2026 Cannabis Training University. All Rights Reserved. Cannabis Training University® is a registered trademark of Online Training Providers LLC.

Copyright Cannabis Training University, a subsidiary of Online Training Providers. © 2026. All Rights Reserved.

Medical Disclaimer: The information on this website is for informational purposes only and is not intended to be a substitute for professional medical advice, diagnosis, or treatment.
Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition.
Legal Compliance: Cannabis remains federally illegal. Products and information are intended only for jurisdictions where cannabis use and possession is legal.
By using this site, you affirm that you are of legal age (21+) and responsible for understanding your local laws.

Divider Text
7-day money-back guarantee. See our Refund Policy at /refund-policy/.
Accepted payment cards
All 7 courses $199Ends in 16d 4h · then $299Get the offer