Bro Science by Grateful Seeds

Bro Science Strain Info

Born from the explosive union of Zoap and Hashburger, the Bro Science strain from Grateful Seeds carries some serious genetic firepower.

Think of it as the lovechild of two cannabis royalty lines—each bringing its own swag to the mix and resulting in a plant that’s both beautiful and badass.

This hybrid hits that sweet spot between indica and sativa, like a perfect blend of chill vibes and cerebral spark, ready to light up your grow room and your sessions alike.

Bro Science doesn’t just grow—it flourishes.

With a solid structure and a vibrant green hue, it stands tall and proud, reaching up to 100cm (3.2 ft) indoors and stretching to 150cm (4.9 ft) under the open sky.

Its buds are dense, compact, and dripping in resin, looking like they’ve been rolled in sugar crystals.

The internodal spacing is just right, letting the air flow and helping those colas fatten up like champs.

You won’t need to baby this plant either—it’s got that built-in resilience that comes from top-tier genetics.

Flowering Time & Yield

Patience pays off with Bro Science, but not too much of it—you’re looking at just 8 to 9 weeks of flowering indoors.

That’s a blink in cannabis time, especially when you’re staring down a sea of frosty nuggets getting ready to harvest.

Under optimal indoor conditions, this strain can reward you with up to 500 grams per square meter (17.6 oz/ft²).

And if you're growing outdoors and giving her all the room and sunshine she craves, expect up to 600 grams per plant (21.2 oz) by late September to early October.

This is the kind of plant that gives back what you put in—quality and quantity in one glorious harvest.

Effects and Aroma

The moment you crack open a jar of Bro Science, it hits you with a wild, unexpected blend—gassy, soapy, and sweet, like someone turned a boutique perfume into smokeable gold.

Most phenos lean toward a sweet, cookie-like base with layers of diesel and fresh herbs tucked underneath.

Take a hit and you'll feel like your taste buds are dancing—a fruity explosion followed by a lingering, mouthwatering finish.

It’s the kind of flavor that makes you do a double take after the first puff, then dive right back in for more.

With THC levels that can easily push past 20%, Bro Science doesn’t mess around when it comes to potency.

The high kicks off with a bright, euphoric head buzz—perfect for sparking up creativity, conversation, or just lifting your mood.

But it doesn’t stop there—soon enough, a smooth, soothing body relaxation creeps in, making it a go-to for both chill nights and social adventures.

This is one of those marijuana seeds that delivers a balanced ride: energizing yet grounding, powerful but never overwhelming.

And thanks to its feminized cannabis seeds nature, you’re guaranteed female plants loaded with those sticky, terp-rich flowers every grower dreams of.

Grow Tips & What Stands Out Most

If there's one thing we love about Bro Science, it's how it manages to pack such a rich resin profile into a plant that's surprisingly easy to handle.

She's not picky, but she definitely thrives when grown in warm, dry climates with stable temps and good light exposure.

Outdoors, she stretches and shows off, especially when you give her big pots and some space to breathe.

Indoors, a solid air circulation setup helps her stay happy and prevents any unwanted moisture buildup.

This strain handles stress like a champ and shows good resistance to common pests and fungal diseases, which takes a lot of pressure off your shoulders during the grow.

We recommend keeping humidity in check during late flowering to protect those chunky buds from mold.

She’s also quite forgiving, so even less experienced growers will find her manageable with just a bit of attention.

A SOG setup works wonders if you're tight on space, and for those aiming for bulk—don't forget the plant supports because those colas get heavy fast.

We especially appreciate how consistent Bro Science is in both structure and yield, making it easy to plan ahead whether you're growing one or ten.

And really, there’s something about watching those resin-soaked buds take shape that just never gets old.

Strain Characteristics

Strain Name: Bro Science

Breeder: Grateful Seeds

Genetics: Hash Burger x Zoap

Type: Hybrid

Seed Type: Feminized

THC Content: 20%+

CBD Content: 0%

Indoor Height: 100cm (3.2 ft)

Outdoor Height: 150cm (4.9 ft)

Indoor Yield: 500 g/m² (17.6 oz/ft²)

Outdoor Yield: 600 g/plant (21.2 oz)

Indoor Flowering Time: 8–9 weeks

Outdoor Harvest: Late September to early October

Difficulty: Easy to Medium

Resistance: High resistance to pests and fungal issues

Climate: Warm, dry, and stable environments

Aroma: Sweet, soapy, gassy, herbal

Flavor: Fruity, cookie-like, diesel undertones

Effects: Euphoric, balanced, creative, relaxing, social

Frequently Asked Questions

Is Bro Science sativa or indica?

Bro Science is a perfectly balanced hybrid, offering the best traits of both sativa and indica.

Sativa strains are known for their uplifting, energizing effects and tend to grow taller with thinner leaves.

Indica strains, on the other hand, are more relaxing and sedative, often with shorter, bushier plants and broader leaves.

Bro Science blends these two worlds beautifully, delivering a cerebral buzz with physical relaxation, all in one smooth ride.

How long does Bro Science take to flower?

Bro Science has a flowering time of 8 to 9 weeks when grown indoors.

Outdoor growers can expect to harvest between late September and early October, depending on the climate.

Is Bro Science good for outdoor cultivation?

Yes, Bro Science performs exceptionally well outdoors, especially in warm, dry climates with plenty of sunlight.

With enough space and good conditions, this strain can reach up to 150cm (4.9 ft) and produce heavy yields.

How much can I expect to harvest from Bro Science?

Indoors, Bro Science can yield up to 500 grams per square meter (17.6 oz/ft²).

Outdoors, it can deliver as much as 600 grams per plant (21.2 oz), depending on the care and environment.

Is Bro Science a good strain for beginners?

Yes, it's a great choice for growers with some experience, but even motivated beginners can manage it with a bit of care.

It’s resistant to common pests and mold, and doesn’t require advanced techniques to produce quality results.