Black Rainbow© Autoflower Cannabis Seeds

(Watermelon Zkittlez X Bacio Rainbow) X Apollo Black Cherry Auto

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Pack: 3

1 Seed 14.50€
3 Seeds 29.00€
5 Seeds 43.50€
25 Seeds 174.00€

Units

€29.00

Tax included

Life cycle: 11 weeks

Grow type: Indoor/Outdoor

Dominant: Indica

Yield: Big

THC: High (20 - 26%)

Flavor: Fruity

Effect: Relaxing

Experience: Intermediate

Black Rainbow© Autoflower seeds

Black Rainbow© Autoflower is part of our Seedstockers Superior collection of autoflower cannabis seeds. She is born from crossing Watermelon Zkittlez and Bacio Rainbow with our very own Apollo Black Cherry© Autoflower, and the result is an indica-dominant beauty with 20-26% THC, a sweet, fruity aroma over a Skunk base and a relaxing effect. From seed to harvest in around 11 weeks, she is a genetic made for you to pull dense, resinous buds from your grow tent, your balcony or your garden.

Details of Black Rainbow© Autoflower Cannabis Seeds

Life cycle 11 weeks

Grow type Indoor/Outdoor

Dominant Indica

Yield Big

THC High (20 - 26%)

Flavor Fruity

Effect Relaxing

Genetica (Watermelon Zkittlez X Bacio Rainbow) X Apollo Black Cherry Auto

Experience Intermediate

Award-winning genetics!
Next-level terpenes
Pleasant and satisfying

(Watermelon Zkittlez X Bacio Rainbow) xApollo Black Cherry© Autoflower→ Black Rainbow© Autoflower

Apollo Black Cherry© Autoflower is one of the best-selling autoflowers at Seedstockers and produces dense, heavy buds with high THC levels that can reach up to 22%. Growers love her complex terpene profile, packed with intense cherry aromas and flavours, backed by earthy, spicy notes reminiscent of traditional Afghan hash. These sensory traits make Apollo Black Cherry© Autoflower a firm favourite among cannabis lovers who value flavour as much as potency.

The lineage of Black Rainbow© Autoflower reflects her breeders' goal of delivering a delicious sensory experience in flavour, aroma and effect. This three-way cross results in an indica-dominant hybrid that musters the strength and resilience of her parents. And with her feminized, autoflowering nature, she is the ideal choice for growers who want a hassle-free grow without ever compromising on quality or potency.

What the plant looks like: indica structure and resin-loaded buds

Black Rainbow© Autoflower is a dense, vigorous plant with a branching structure and noticeably generous spacing between nodes. For an autoflower, she can be considered fairly large, with a frame that is neither too tall nor too lanky and stands out for her copious production.

Her indica dominance becomes clear as the plants mature. The buds are a real feast for the eyes: dense and loaded with resin, giving them a glossy, almost crystalline look that promises both stickiness and potency. Keep in mind, though, that they are sensitive to humidity, so good ventilation during drying is crucial to preserve these precious flowers.

Depending on the phenotype, these tight, compact flowers come in shades of green from light to dark, with vibrant orange pistils scattered all over and fairly small sugar leaves, which makes trimming easier.

Sweet, fruity aroma with a Skunk base

CandyEarthyFruityCitrusBerriesSkunk

Aroma is where this genetic truly shines. Pop open the jar and you'll be greeted by an explosion of fruit, a complex mix of tropical and citrus notes with a clearly sweet edge that makes her instantly recognisable. A second layer reveals more distinctive notes of berries and dried orange peel, giving her a bittersweet character that intensifies when you grind the flowers. Sharper fuel tones then merge into an overwhelmingly earthy, spicy sensation, creating the classic hash aroma that Skunk-descended strains are known for.

Flavour: diesel, berries and a woody finish

This exceptional strain boasts a delicious blend of terpenes, including myrcene, limonene, caryophyllene and pinene, which come together to create a range of flavours that will leave you wanting more. After that first inhale, you'll notice a strong diesel note followed by an absolutely irresistible spicy touch.

But the charm doesn't end there: a burst of berry and fruit essence dances across your taste buds, like biting into the juiciest blackberries imaginable. This fruity touch is beautifully complemented by a subtle Kush flavour that adds depth to the whole experience, taking your senses on an uplifting journey.

Burned in a pipe or joint, the flowers give off a very pleasant, smooth smoke. On the exhale, this light smoke leaves a curious woody aftertaste that lingers for quite a while, and old-school flavour lovers will quickly make her one of their favourites.

RelaxingEffect

IndicaDominance

20%-26%THC

Black Rainbow© effects: indica relaxation for the late afternoon and evening

Although the magic kicks in fairly quickly after the first puff, her head effects tend to be subtle. At first you may feel a slight pressure around the eyes and temples. As you get used to this sensation, your senses become sharper: music, colours and flavours are more enjoyable, and time seems to pass more calmly. A good album or a film is the perfect companion.

As the high progresses, a tangible body effect arrives to complement the mental activation. While this relaxation is unlikely to knock you out, it may well undo any earlier motivation to tackle a long to-do list. In these later stages, she is best enjoyed in relaxed settings. Because of the slow drop in energy, she is best enjoyed from late afternoon into the early evening.

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Everything you need to know about growing Black Rainbow© autoflower seeds

60-100 cmHeight

400-450 g/m²Indoor yield

100-170 gOutdoor yield per plant

11 weeksLife cycle

Once you have a bit of experience, growing this strain becomes much easier. She doesn't need much space, which makes her perfect for small grow rooms. She can also handle fluctuating temperatures and resist pests, so you can plant Black Rainbow© autoflower seeds outdoors without any trouble.

Plant your cannabis seeds in an 11 to 20 litre pot from the start to avoid transplanting later and causing unnecessary stress. Fabric pots also help with root aeration. If you choose to grow her in a hydroponic setup, keep a close eye on humidity, as anything above 50% encourages mould, especially during flowering.

And remember not to subject autoflowers to pruning or high-stress training, as these methods only ruin yields. All these plants need is some light defoliation during flowering to keep enough airflow around the lower foliage.

Is she the right choice for you?

✅ YES, if you're looking for...

A sweet, fruity aroma with that classic Skunk and hash base
Speed: from seed to harvest in around 11 weeks
Generous yields: 400-450 g/m² indoors
A relaxing effect for the late afternoon and evening
Good results both indoors and outdoors

❌ NO, if...

You grow outdoors in a very humid or rainy autumn climate
You want to use high-stress training techniques like topping
You're prone to anxiety or have a low THC tolerance

Black Rainbow© Autoflower FAQ

What are Black Rainbow© autoflower cannabis seeds?

Black Rainbow© Autoflower is a gem among the new generation of autoflowering cannabis strains. This potent hybrid combines the strength of Watermelon Zkittlez and Bacio Rainbow with the adaptability of our Apollo Black Cherry© Autoflower, resulting in a fast-flowering feminized autoflower that is extremely easy to handle and thrives in a wide range of growing conditions. If you know what her parents can do, you'll understand the greatness she holds.

This strain has a THC content of 20% to 26%, which makes her very potent yet still accessible to both average and highly experienced users. Her CBD content is generally low, as is typical of THC-dominant strains. Her moderate CBN levels and rich concentration of terpenes, such as myrcene and limonene, also make her an excellent choice for recreational use.

How long does the seed take to grow?

This strain stands out as one of the most attractive options for growers with no time to lose, thanks to her robustness and autoflowering nature. Although she tends to be a little taller than standard autoflowers, at 60 to 100 cm, she is still ideal for small spaces, as her growth stays controlled without stretching too much, which makes her easy to manage.

Her plants usually develop dense side foliage rather than height, which is key to maximising yield. With a full life cycle of around 11 weeks, yields can be significant, especially with high-quality seeds like those from Seedstockers and the right use of bloom boosters. Indoors, growers can harvest 400 to 450 g/m² under a 300-350 W LED system, while outdoors, plants that reach greater heights typically yield around 100 to 170 g each.

How long does she take to flower?

Her autoflowering nature removes the need for complicated light cycles to trigger flowering, making her even easier to grow since she flowers automatically after a set period. In fact, these plants can flower in just 5-6 weeks, which means growers can harvest several times a year. Still, make sure the plants get enough light for healthy growth, as the quality and amount of light can affect both yield and plant development.

How do I grow her indoors?

You can also boost potential yields by planting several of these autoflower seeds using the Sea of Green method, a technique that is also brilliant for making the most of your space. Autoflowers are sensitive to stress and, because of their short life cycle, don't easily recover from disruptions. So avoid high-stress training such as topping and supercropping. Only if you feel it's necessary, go for less invasive methods like LST (Low Stress Training), which involves gently bending and tying down branches to improve light exposure without harming the plant.

Where should I grow her outdoors?

Black Rainbow© Autoflower also performs admirably outdoors, especially in temperate or warm climates like the Mediterranean. Although you can grow her seeds outdoors all year round, yields are significantly lower with less than 6 hours of direct sunlight a day. An overly humid climate can also be a problem for her dense buds, which may be prone to mould with the first autumn rains.

Black Rainbow© Autoflower is a true testament to the art of cannabis, offering a perfect mix of flavour, easy growing and pleasant effects. Whether you're an experienced grower or just starting out, she promises satisfaction and a generous haul of sweet, potent buds.

Choose your pack of 1 to 25 Black Rainbow© Autoflower seeds and discover first-hand everything this wonderful plant has to offer in your grow.