Runtzbert Feminized Seeds – The Grateful Seeds’ Runtz x Key Lime Pie Hybrid

Runtzbert is a limited-edition feminized cannabis strain from The Grateful Seeds that fuses the legendary Runtz with the zesty Key Lime Pie, delivering huge yields, rapid flowering, and an ultra-terpy candy-lime aroma that’s pure sensory bliss.

Ever feel like your grow is stuck in flavor purgatory—decent buds, sure, but nothing that makes you close your eyes and say “wow” with every puff? You’re not alone. Too many strains promise the world but deliver bland, forgettable smoke that leaves your senses begging for more.

That frustration builds fast: you’ve poured time, nutrients, and hope into your plants, only to harvest something that smells like… well, nothing special. It’s a waste of your effort and your precious grow space. You deserve buds that excite, not just exist.

Enter Runtzbert. This isn’t just another hybrid—it’s a flavor revolution. Born from two elite parents, it transforms your grow from mundane to magnificent, offering sandy, resin-drenched colas with a terpene profile that’s both explosively fruity and refreshingly citrusy.

What’s in the Runtzbert genetics?

Runtzbert is the lovechild of two modern icons, meticulously crossed to amplify the best of both worlds.

• Mother: Runtz – famous for its Zkittlez x Gelato heritage, delivering intense fruity, creamy terpenes and massive resin production.
• Father: Key Lime Pie – a Girl Scout Cookies descendant from Norcal Genetics, known for its sour lime, caramel, and subtle mint notes.
• Result: A vigorous, medium-height hybrid with a classic Gelato structure, offering higher yields than either parent without sacrificing an ounce of quality.

How your grow game levels up

With Runtzbert, your garden becomes a terpene factory. Indoors, you’ll pack your space with up to 500 g/m² (1.53 oz/ft²) of dense, glistening buds. Outdoors, a single plant can yield a staggering 700 g (24.69 oz), turning your backyard into a personal dispensary of flavor.

The magic is in the details. Its medium internodal spacing and strong secondary branching create a perfect canopy for light penetration and airflow, making it a dream for SCROG or SOG setups. And with a flowering time of just 60–65 days, you won’t be waiting long to taste the results of your labor.

Advantages and benefits you’ll notice from day one

• Explosive flavor profile: A perfect blend of Runtz’s candy sweetness and Key Lime Pie’s zesty lime, with earthy, minty undertones.
• Huge, resinous yields: Outperforms its famous parents in production, both indoors and out.
• Rapid flowering cycle: Ready to harvest in just 9 weeks from the start of bloom.
• Vigorous and robust growth: Strong structure and good branching make it easy to manage and train.
• Consistent phenotypes: Around 70% of plants express the full Runtz terpene profile, with 30% leaning into the lime-dominant Key Lime Pie expression.
• Balanced, euphoric effect: A 17% THC level delivers a fast-hitting cerebral buzz paired with deep physical relaxation.

Tips to combine it with other Pevgrow products

To get the absolute most out of your Runtzbert, pair it with a nutrient system that supports its heavy-feeding nature and maximizes terpene production.

• Start strong with a rooting gel like Root It 150ml – Rooting gel for a powerful foundation.
• Feed it a complete organic line such as the 100% Organic Biocanna Kit to enhance its natural flavors and aromas.
• Boost its final weeks with a PK booster like Arkhas Pk Booster to swell those already impressive buds and increase resin production.

Technical specifications

• Breeder: The Grateful Seeds
• Type: Feminized
• Dominance: Indica/Sativa Hybrid
• Genetics: Runtz x Key Lime Pie (from Norcal Genetics)
• Indoor flowering period: 60-65 days
• Outdoor harvest (N. Hemisphere): October
• Indoor yield: Up to 500 g/m² (1.53 oz/ft²)
• Outdoor yield: Up to 700 g (24.69 oz) per plant
• Indoor height: Up to 1.00 m (3.28 ft)
• Outdoor height: Up to 1.50 m (4.92 ft)
• Difficulty: Medium (heavy feeder, requires good nutrition)
• Structure and vigour: Medium internodal spacing, strong secondary branching, typical Gelato hybrid structure
• Recommended pot: 7-11 L for indoor SOG; 50+ L for outdoor
• Light cycle: 18/6 for veg, 12/12 for flower
• Smell in grow: High (a carbon filter is recommended)
• THC: 17%
• CBD: 0%
• Aromatic profile: Dominant notes of caramel, lime, and mint with earthy undertones
• Effect: Cerebral euphoria followed by deep physical relaxation; ideal for evening enjoyment

Frequently Asked Questions

Is Runtzbert suitable for beginner growers?

It’s best for growers with some experience, as it’s a heavy feeder and will need a well-managed nutrient schedule to reach its full potential.

What’s the main difference between the Runtz and Key Lime Pie phenotypes?

About 70% of the plants will have the classic, super-fruity Runtz aroma. The other 30% will express more of the Key Lime Pie genetics, with a pronounced sour lime and caramel pie scent.

Can I grow Runtzbert in a small indoor tent?

Absolutely. Its medium height and suitability for SOG (Sea of Green) make it a great choice for compact spaces. Just be ready for its high resin production and strong aroma.

Personal Experience of Pevgrow’s CEO (Alan)

I’ve grown a lot of hype strains, but Runtzbert genuinely surprised me. I ran a small SOG test with 9 plants in 11L pots, and the uniformity was impressive. By week 4 of flower, the smell was already insane—a sweet, candy-lime perfume that filled the entire room. I used a basic organic nutrient line and just kept a close eye on its feeding, as it’s a hungry plant. The yield was stupidly good for the space, and the buds were so resinous they looked frosted. My favorite part? The smoke. It’s smooth, complex, and the effect is this perfect balance of happy and relaxed. My tip: don’t be shy with the nutrients, but make sure your exhaust and carbon filter are dialed in. This one’s a keeper.