Pineapple Upside Down Cake Feminized Seeds · Humboldt Seed Company · Dessert Terpenes & Uplifting High

Pineapple Upside Down Cake Feminized Seeds from Humboldt Seed Company are your ticket to cultivating a strain that genuinely lives up to its delicious name, offering a unique terpene profile and an uplifting, spiritual high perfect for creative sessions or social gatherings.

Ever crave a strain that delivers a complex, mouth-watering flavor but find most "dessert" varieties fall short on potency or effect? You end up with something that smells great but leaves you wanting more—a sweet tease without the satisfying punch. This gap between aroma and experience can make your grow feel like a missed opportunity, especially when you've invested time and care only to get a one-dimensional result.

Pineapple Upside Down Cake bridges that gap perfectly. Born from a meticulous 2017 phenotype hunt in Humboldt County, this strain is a cross between the potent Cookie Monster and the sharp, classic Pineapple Trainwreck. It combines the best of both worlds: the loud, energetic sativa characteristics and a balanced, relaxing indica finish. The result is a plant that not only fills your space with the irresistible scent of baked pineapple cake and creamy vanilla frosting but also delivers a potent, cerebral high that lifts your mood without locking you to the couch.

What This Strain Brings to Your Garden

This isn't just another pretty plant; it's a reliable, rewarding grow. As a feminized photoperiod seed, it guarantees female plants, removing the guesswork and stress of identifying males. Its sativa-dominant genetics (60% Sativa, 40% Indica) promote a structure that's manageable indoors but can express its full, bushy potential outdoors. Growers report it's surprisingly resilient to common issues like powdery mildew, making it a solid choice even if you're still honing your skills. The real magic happens around week 6 of flowering when the buds develop a stunning array of colors and become coated in sticky, golden trichomes.

Key Features and Grower Benefits

• Guaranteed Female Plants: Feminized seeds eliminate the risk of male plants, ensuring your time and nutrients go directly into producing potent, resinous flowers.
• Fast Flowering Time: With a photoperiod flowering time of just 45 days (approximately 6.5 weeks), you get a quicker harvest cycle compared to many other photoperiod hybrids, perfect for faster turnarounds.
• Unique Dessert Terpene Profile: The aroma is a complex blend of sharp pineapple, sweet vanilla frosting, and a nutty, earthy base—smelling exactly like the namesake dessert right out of the oven.
• Potent, Balanced Effects: Offers a sharp, energetic and uplifting sativa-led high that gradually mellows into a relaxed, comfortable body sensation, ideal for daytime or early evening use.
• Mold & Mildew Resistance: Shows good natural resistance to common fungal pathogens, providing a safety net for growers in more humid climates or less-than-perfect environments.
• Adaptable Structure: While it can stretch during the flowering stretch, its growth is controllable. It responds well to low-stress training (LST) to maximize light exposure and yield.

How to Grow Pineapple Upside Down Cake Successfully

Getting the most from these genetics is straightforward with a few key focuses. Start with a high-quality, well-aerated substrate to encourage strong root development from the very beginning.

1. Germination & Seedling Stage: Germinate in a warm (22–25°C / 71–77°F), humid environment. Once the taproot emerges, plant directly into a final pot of 11–15 L (2.9–4.0 gal) if growing in soil, or a slightly smaller pot for coco. This minimizes transplant stress. For an extra boost, consider a root stimulator like Natural Powers Root Stimulator to establish a vigorous foundation.
2. Vegetative Growth: Maintain an 18/6 light cycle. This strain enjoys a stable environment with temperatures around 22–26°C (72–79°F) and humidity at 60–70%. It's a moderate feeder, so start with a light nutrient regimen and increase gradually. Topping once or applying LST early on will help manage height and promote multiple colas.
3. Flowering Transition & Bloom: Switch the light cycle to 12/12 to induce flowering. You'll see a noticeable stretch in the first two weeks. Reduce humidity to 40–50% to protect the dense buds. This is when the incredible pineapple and vanilla aromas will intensify. Support heavy colas with stakes or a trellis net if needed. During peak bloom, a quality PK booster can enhance bud density and resin production.
4. Harvest & Post-Harvest: Flowers are typically ready in about 45 days of 12/12. Look for milky white trichomes with some amber for a balanced effect. Flush with plain water for the last 7–10 days. Dry slowly in a dark space at 18–22°C (64–72°F) and 50–60% RH for 10–14 days, then cure in jars for at least 2–4 weeks to fully develop the complex flavors.

Technical Specifications

• Breeder / Brand: Humboldt Seed Company
• Type: Feminized Photoperiod
• Dominance: Sativa-dominant Hybrid (60% Sativa / 40% Indica)
• Genetics: Cookie Monster x Pineapple Trainwreck
• Indoor Flowering Time: 45 days (approx. 6.5 weeks)
• Outdoor Harvest (Northern Hemisphere): Mid-September to early October
• Indoor Yield: Approx. 400–550 g/m² (1.3–1.8 oz/ft²)
• Outdoor Yield: Approx. 500–700 g/plant (17.6–24.7 oz/plant)
• Indoor Height: 0.80–1.20 m (2.6–3.9 ft)
• Outdoor Height: 1.50–2.00 m (4.9–6.6 ft)
• Difficulty: Medium (good for growers with some experience)
• THC Content: 22–26%
• CBD Content: Low (
• Aromatic Profile: Dominant notes of pineapple, creamy vanilla, and sweet, nutty earthiness.
• Effect: Energetic, uplifting, and euphoric cerebral onset, followed by a relaxed, comfortable body sensation.

Frequently Asked Questions

Is Pineapple Upside Down Cake good for beginners?

It's rated as medium difficulty. While it's resilient, its optimal flavor and yield are best achieved by growers who can manage environmental factors like humidity during flowering. Beginners can succeed with careful attention to watering and climate control.

How strong is the smell during growth?

The smell is pronounced, especially in late flowering. The sweet, tropical, cake-like aroma is very distinctive. Using a carbon filter in your indoor grow setup is highly recommended for discretion.

What's the best way to train this plant?

Low-Stress Training (LST) is highly effective. Gently bending and tying down branches during vegetative growth creates an even canopy, maximizes light exposure, and can significantly increase your yield. Avoid heavy defoliation, especially after the flowering stretch.

Can I grow this strain outdoors?

Absolutely. It thrives in a warm, Mediterranean-like climate with plenty of sunlight. Be mindful of its potential height (up to 2 m / 6.6 ft) and ensure it has enough space. Its natural resistance helps it handle outdoor challenges well.

Personal Experience of Pevgrow’s CEO (Alan)

I've run Pineapple Upside Down Cake a few times now, both indoors and in a greenhouse, and it never fails to impress visitors. The smell is the first thing everyone comments on—it's uncanny, like someone is baking in the next room. In my indoor tent, I kept it in a 15 L (4 gal) fabric pot with a light soil mix and used a simple LST to keep it around 1 m (3.3 ft) tall. The yield was solid, but the real prize was the bag appeal: frosty, colorful buds that just look expensive.

The high is exactly what I look for in a daytime strain. It kicks in with a clear-headed, creative buzz that's great for getting stuff done or just hanging out, and it settles into a gentle relaxation without any heaviness. Compared to other "cake" or dessert strains, this one stands out because the flavor translates perfectly from smell to taste. You get that sweet pineapple and vanilla on the inhale, and it lingers pleasantly. My main tip? Don't rush the dry and cure. Giving it a proper 3-week cure in jars really lets those complex terpenes shine and makes the smoke incredibly smooth.