Black Runtz Seeds

The Strength of Black Runtz

THC levels typically range from 25% to 30%. Just kick back, relax, and enjoy the ride.

Known for its high potency

This flavorful beauty delivers a calming, sedating high that’s perfect for winding down - ideal for melting into the couch after a long day, throwing on your favorite show, and diving into some well-deserved snacks.

Feel the High of Black Runtz

This frosty fan favorite is the kind of strain that turns an ordinary night into an experience. The high starts off with a wave of smooth, euphoric relaxation that melts away tension and puts you in a seriously chilled-out headspace. As it settles in, the body high kicks up a notch - heavy, calming, and perfect for sinking into the couch without a care in the world. It’s the ultimate “kick off your shoes and vibe” strain.

People love this strain for its bold flavor, powerful effects, and how effortlessly it helps you unplug. It's great for zoning out with your favorite playlist, binge-watching a show, or just enjoying the moment. And yes - the munchies hit hard with this one, so don’t be surprised if you find yourself raiding the fridge halfway through your session. With its relaxing, flavorful vibe and strong, long-lasting high, this flower is a go-to for anyone looking to treat themselves to a top-shelf smoke that truly delivers.

Responsible marijuana use within one's tolerance levels can produce pleasant effects- avoid excessive intake.

The Flavor of Black Runtz

This creamy berry bomb has this smooth, candy-sweet flavor that really sticks with you. When you light it up, you’ll catch a mix of fruity berry, a little tropical kick, and this creamy, almost dessert-like finish that makes each hit feel like a treat. It’s the kind of smoke that makes you pause for a second just to enjoy the taste.

The fruity vibe comes from limonene, while caryophyllene gives it a tiny bit of spice that balances things out. There’s also a touch of linalool in there that adds a soft, floral layer. It’s mellow, flavorful, and just really satisfying from start to finish.

Flowering Time 60-70 Days

-- Outdoor Grow (Full Sun / In Ground) --
Height: 6 Ft Plus
Yield: 1 1/2 - 2 Plus lbs. Cured

How to Grow Black Princess Marijuana Indoors and Outdoors

What to Watch for When Growing Black Runtz - It has moderate resistance, but once those buds start getting thick and frosty in late flower, it can be prone to bud rot and mildew if you’re not careful. Keep humidity under control, especially during flower, and make sure you’ve got strong airflow. Spraying with Holi Moli Eliminator as a preventative can help you stay ahead of mold, mildew, bud rot, and common pests like aphids or spider mites.

Germination: Begin your cultivation journey with Holi Moli’s germination and transplanting guide—created to promote fast, healthy root development and lay the foundation for strong plants.

Temperature Swings: This resin-heavy hybrid performs best in a stable climate and doesn’t appreciate drastic changes. While it can handle mild shifts, large day-to-night temperature swings can slow development, reduce bud density, and stress plants. Keep temps consistent from veg to harvest for optimal growth.

Nutrient Sensitivity: It responds best to balanced feeding. Avoid pushing excess nitrogen in flower, as it can throw off pH and dull the strain’s signature sweet, fruity flavor. Holi Moli Juice is an all-in-one nutrient solution that can be used from veg through flower to maintain healthy growth and bold terpene expression.

Odor Control: Expect a strong, candy-sweet and fruity aroma during bloom that can easily travel. Indoors, use a high-quality carbon filter. Outdoors, plant away from property lines if discretion is important.

Stretching: This lady can stretch moderately during the first 2–3 weeks of flower. Pro Tip: Flip to 12/12 when plants are about 20–24 inches tall (around week 5–6) to maintain a balanced canopy and avoid overcrowding.

Branch Support: With its heavy, resin-rich buds, this strain can weigh down branches late in flower. Use stakes, trellis netting, or plant yoyos to keep colas upright and protected until harvest.

Best Climate to Grow Black Runtz Cannabis

This frosty, crystal-covered cannabis plant thrives in warm, sunny outdoor conditions where it can soak up 8–10 hours of direct sunlight daily and enjoy a steady, natural breeze.

Choose an open grow site with full sun exposure and consistent airflow to keep the canopy dry and the dense, trichome-rich buds healthy. Avoid planting near fences or walls, as they can trap humidity, block airflow, and cast unwanted shade—slowing growth and creating conditions that encourage mold.

Go with fabric grow bags over plastic pots— fabric allows for superior root aeration, better drainage, and more stable soil temperatures, while plastic can trap heat and moisture, stressing plants in direct sun.

Grow Bag Sizes & Spacing:

• 10-gallon bags – 3.5–4 feet
• 15-gallon bags – 4.5–5 feet
• 20-gallon bags – 5–6 feet (Gives roots the room to expand and mature—strong, well-established root systems fuel bigger, more vigorous plants with the capacity for greater size and higher yields.)

Avoid setting grow bags directly on concrete or heat-reflective surfaces, as these can overheat the root zone, limit drainage, and stunt growth.

Even in warm, sunny climates, humidity can spike in the mornings or after rainfall. Water early so foliage dries before nightfall, apply a thick mulch layer to insulate the root zone and maintain steady moisture, and follow spacing guidelines above to promote airflow.

While this exotic, terpene-packed hybrid has moderate resistance, its thick bud structure can still attract pests or develop mold in certain conditions. Apply Holi Moli Eliminator from veg through flower to protect against mold, mildew, bud rot, and pests.

How to Grow Black Runtz Marijuana in Subtropical Climates

This resin-drenched dessert hybrid can thrive in hot, arid subtropical climates when given the right care to handle intense heat and conserve moisture.

Choose a bright, open location with 8–10 hours of direct sunlight daily and a steady natural breeze. Avoid planting near fences or walls, as they can trap heat and humidity, block airflow, and cast unwanted shade— slowing growth and increasing mold risk, even in a dry climate.

Always use fabric grow bags instead of plastic pots—fabric promotes superior root aeration, improves drainage, and helps regulate soil temperature during peak heat. Plastic traps heat and moisture, which can stress plants and slow growth in intense sun.

Grow Bag Sizes & Spacing:

• 10-gallon bags – 3.5–4 feet apart
• 15-gallon bags – 4.5–5 feet apart
• 20-gallon bags – 5–6 feet apart

Avoid setting grow bags directly on concrete or heat-reflective surfaces. These can overheat the root zone, restrict drainage, and hinder development.

While the low humidity of this climate reduces mold risk, extreme sun and heat can quickly dehydrate plants. Water deeply in the early morning so roots absorb moisture before peak heat, and apply a thick mulch layer to insulate the root zone and slow evaporation. If temperatures stay above 90°F for extended periods, use white shade cloth during the hottest hours to reduce heat stress without blocking essential sunlight. Avoid black shade cloth, as it traps and radiates heat, making conditions harsher.

Even in arid conditions, pests can still threaten the heavy, trichome-rich buds. Keep air circulating, check plants often, and use Holi Moli Eliminator from veg through flower to guard against mold, mildew, bud rot, and pests. Safe for every stage of growth, it’s a key step in preserving top-shelf quality and rich aroma.

How to Grow Black Runtz Marijuana in Temperate Climates

This sugar-coated strain can thrive in temperate climates, but it requires extra attention to manage seasonal humidity, fluctuating temperatures, and potential late-season rain.

For the best results, germinate seeds indoors in early spring, then transplant outdoors once nighttime temperatures consistently stay above 50°F. This gives your plants a head start before facing the unpredictable shifts of a temperate grow season.

Choose an open grow site that receives 8–10 hours of direct sunlight daily and benefits from steady natural airflow. Good circulation helps keep the canopy dry and reduces the risk of mold forming in the dense buds. Avoid planting near fences or walls, as these structures can trap humidity, block airflow, and cast unwanted shade—slowing growth and encouraging disease.

Always choose fabric grow bags over plastic pots—fabric provides superior root aeration, improved drainage, and more stable soil temperatures, while plastic can trap heat and moisture, causing stress in changing seasonal weather.

Grow Bag Sizes & Spacing:

• 10-gallon bags – allow 3.5–4 feet of space
• 15-gallon bags – allow 4.5–5 feet of space
• 20-gallon bags – allow 5–6 feet of space

Avoid placing grow bags directly on concrete or heat-reflective surfaces, as these can overheat the root zone, cause poor drainage, and stunt growth.

This sweet hybrid’s thick buds can be prone to mold in humid or rainy conditions. Prune lower branches and thin the canopy to improve airflow. Water early in the morning so leaves dry before nightfall, and mulch around the base to maintain even soil moisture. If rain is expected late in the season, use a rain cover or simple greenhouse to keep the candy-scented colas dry and healthy.

Even with moderate natural resistance, this high-THC dessert strain benefits from preventative care. Use Holi Moli Eliminator throughout veg and flower to shield your plants from mold, mildew, bud rot, and pests. Safe at every growth stage, it’s vital for keeping your harvest at peak quality and flavor.

How to Grow Black Runtz Indoors | Complete Guide

This fruity, tropical candy-flavored cultivar thrives in a stable, warm environment. Keep temps between 75–80°F during lights-on and 65–70°F during lights-off. Avoid large temperature swings, as big fluctuations can stress plants, slow growth, and reduce bud density.

During the vegetative stage, maintain 60–65% RH to promote vigorous foliage growth and healthy roots. Once flowering begins, lower humidity gradually to 45–50% to prevent mold in the thick, trichome-covered buds. In the last two weeks before harvest, drop it further to 40–45% to preserve terpene richness and increase bud tightness.

Use fabric grow bags instead of plastic pots— fabric improves root aeration, increases drainage, and keeps soil temperatures stable. For most indoor grows, 5–7 gallon fabric pots work best. Always keep 2.5–3 feet between plants to ensure strong airflow and avoid overcrowding.

This resin-heavy strain responds well to training. If you have experience or want to challenge your skills, try topping, low-stress training (LST), or a SCROG setup to improve light penetration and boost yields. If you’re newer to training, stick with gentle LST and selective defoliation until you’re comfortable with more advanced techniques.

Expect a strong, sweet, candy-like aroma during late flower, so a carbon filter is a must for indoor setups. Combine it with oscillating fans to keep air moving evenly through the canopy and a dehumidifier to control moisture—especially in late flower when buds are most vulnerable to mold.

Lighting is one of the most important factors in how this potent hybrid finishes. Full-spectrum LEDs are ideal. Some growers veg under 6500K and switch to 3000K–3500K for flower, but our growers here at Holi Moli have consistently achieved outstanding results keeping plants under 6500K from start to finish—producing dense, frosty buds with rich aroma and vibrant bag appeal.

Avoid cutting corners on lighting. Underpowered or low-quality fixtures will leave you with airy buds, reduced resin, and muted flavors. If you want heavy yields and premium-quality flower, investing in strong, efficient lighting is one of the smartest decisions you can make—it truly makes or breaks the grow.

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