Blueberry Cupcake started life in someone else’s garden. HendRx Farms bred and discovered it, then entered it in The Grow-Off 2020, where it was trialed under very different growing conditions and drew a strong response from the other competitors. Humboldt Seed Company liked it enough to bring it to seed. The result is a balanced 50/50 hybrid with 28-34% THC and one of the most dessert-like noses in the catalog.
The genetics pair the breeder’s Blueberry Muffin with Wedding Cake. Thanks to the stable, homozygous Blueberry Muffin IBL behind it, those famous berry-muffin terpenes tend to dominate, while the Cake side supplies an extra punch of potency.
Explosive growth and an exceptional full-term yield round out the package. There is some variation between plants, so growers can enjoy a little pheno hunting while they work through a pack.
Lineage and Breeding: Blueberry Muffin x Wedding Cake
Blueberry Muffin is a Humboldt Seed Company signature, a uniform, terpene-rich line that has been inbred until it passes its character on reliably. Wedding Cake contributes the high THC that gives the cross its extra punch. Crossing them created a hybrid where the fruit-and-pastry nose of the muffin side carries through, backed by the Cake’s strength.
The breeder lists the current generation as S2 x Bx2. Earlier descriptions referred to the release as an S1, a selfed line, so a degree of phenotype variation is expected even though the Blueberry Muffin terpenes tend to come through.
Aroma, Flavor and Effect
The aroma is pure bakery with a twist: sweet cake batter and fresh blueberries with a faint rocket-fuel edge underneath. Picture a tray of blueberry cupcakes cooling on a workbench in a garage where somebody just filled a jerrycan. Sweet and creamy on the inhale, slightly fuel-tinged on the exhale, it is a profile that grabs attention.
The effect is strong and relaxing. With THC in the 28-34% range, the first few minutes bring a powerful wave that settles over both mind and body, true to its balanced hybrid genetics. It is a strain for experienced consumers and calm evenings, when nothing on the schedule needs a sharp mind.
Growing Blueberry Cupcake Indoors and Outdoors
Indoors, Blueberry Cupcake grows fast, so get ahead of it. Top during early veg and train with LST or a SCROG net to spread the explosive growth into an even canopy. Flowering takes about 60 days, around eight and a half weeks. Keep good airflow through the dense, cake-style buds in the final weeks.
Outdoors is where the explosive vigor really pays off. Given full sun and a long season, plants reach impressive size and deliver an exceptional full-term yield, with harvest between October 10 and 20. That later window suits growers in warm, dry climates; in rainy areas, consider a greenhouse or light deprivation to protect the harvest.
Blueberry Cupcake Characteristics
| Strain type | Feminized photoperiod |
| Genetics | Blueberry Muffin x Wedding Cake (S2 x Bx2) |
| Indica/Sativa | 50% Indica / 50% Sativa |
| THC | 28-34% |
| Effect | Strong and relaxing |
| Flavor/Aroma | Cake batter, blueberries, hint of fuel |
| Flowering time | 60 days (about 8.5 weeks) |
| Outdoor harvest | October 10 – 20 |
| Yield | Exceptional full-term yield |
| Characteristics | Explosive growth, some phenotype variation, Blueberry Muffin terpenes tend to dominate |
| Best cultivation technique | Early topping with LST or SCROG; full season outdoors |
FAQ
Is Blueberry Cupcake Indica or Sativa?
Blueberry Cupcake is a balanced hybrid, 50% Indica and 50% Sativa, with a strong, relaxing effect.
How potent is Blueberry Cupcake?
Humboldt Seed Company lists THC at 28-34%, which puts it in the very high potency range.
Who bred Blueberry Cupcake?
HendRx Farms originally bred and discovered it and featured it in The Grow-Off 2020. Humboldt Seed Company now offers it in seed form.
What does Blueberry Cupcake smell like?
Expect cake batter and ripe blueberries, with a faint rocket-fuel edge underneath the sweetness.
How long does Blueberry Cupcake take to flower?
Indoors it flowers in about 60 days. Outdoors, harvest falls between October 10 and 20.
Does Blueberry Cupcake show phenotype variation?
Yes, some variation is expected. The stable Blueberry Muffin IBL in the background helps its berry-muffin terpenes stay dominant across most plants.
