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Rainbow Flakes feminized seeds by Positronics are your ticket to a vibrant, flavorful, and high-yielding grow—perfect for both new and experienced cultivators who want beauty and power in one compact plant.
Most strains either look boring, taste flat, or demand expert-level attention. You end up with bland green buds, weak effects, or plants that collapse under stress. It’s frustrating when your effort doesn’t match the results.
Imagine coming back to your grow room and seeing buds bursting in purple, orange, and electric green hues—coated in trichomes, smelling like mango and citrus, and growing strong without constant babysitting. That’s the daily reality with Rainbow Flakes.
Rainbow Flakes isn’t just eye candy—it’s a high-performance hybrid bred for resilience, speed, and flavor. With its compact structure and explosive terpene profile, it turns any setup into a colorful, aromatic powerhouse. No more dull grows or disappointing harvests.
You’ll notice the difference from week one. The leaves develop vibrant pigments under cooler night temps, and by flowering, your plants look like living art. The scent punches through the room—tropical, sweet, with a hint of diesel—without needing a carbon filter. Indoors, it stays manageable at 80–110 cm (2.62–3.61 ft), perfect for SOG or small tents. Outdoors, it laughs off mild humidity and finishes fast, so you’re not waiting forever to harvest.
And the yield? Big. We’re talking up to 550 g/m² (1.94 oz/ft²) indoors and 600 g/plant (21.16 oz) outdoors under good conditions. All in just 56–63 days of flowering. No stress, no guesswork—just color, flavor, and resin.
Start with a stable seedling environment: 22–25 °C and 60–70% RH. Use a well-aerated soil or coco mix—Bio Grow BioBizz gives young plants a strong start without overfeeding. Transplant once roots peek out, into 11–18 L pots depending on space.
In veg, keep light at 18/6 and maintain 22–26 °C. This strain responds well to LST and light topping—just avoid aggressive pruning. For stronger roots and stress resistance, Cancerbero Mycorrhizae boosts uptake and resilience from the start.
When flowering begins (around week 3), switch to 12/12. Lower night temps to 18–20 °C to trigger color development. Keep RH at 40–50% to prevent mold. Feed with bloom nutrients rich in PK—WSP Sensi Bloom A+B Pro maximizes resin and density without harshness.
Harvest when trichomes are mostly milky with some amber for a balanced effect. Flush 7–10 days before. Dry slowly at 18–20 °C and 50–60% RH, then cure for 3–4 weeks to deepen flavor.
Lower night temperatures to 18–20 °C during flowering. Cooler temps trigger anthocyanin production, bringing out purple, orange, and rainbow hues in the buds and leaves.
Yes, but with caution. It has good mold resistance, but avoid constant wetness. Use good airflow and consider a greenhouse or sheltered spot if you’re in a rainy area.
No. It’s moderate feeder—start low and increase gradually. Overfeeding can reduce terpene production and cause nutrient burn.
Absolutely. Feminized seeds, fast cycle, and resilience make it a top choice for first-time growers who want impressive results without stress.
I grew Rainbow Flakes in a 60x60x160 cm tent with 3 plants in 14L pots. I used LST early and switched to 12/12 at 25 cm. The color came through strong when I dropped night temps to 19°C. I fed with BioBizz and Sensi Bloom, and the smell was unreal—like opening a fruit market. Harvest was at 60 days, with milky trichomes. Yield was 520 g/m², and the cure brought out a creamy mango finish. My tip? Don’t top more than once—this strain branches well naturally. It’s now one of my go-to strains for fast, beautiful, and tasty harvests.
| Type: | Feminized | |
| Banks: | Positronics | |
| Genetics: | Zerealz x SFV | |
| Phenotype: | Indica | |
| Harvest outdoor H.N: | Early October | |
| Harvest outdoor H.S: | Early March | |
| Indoor production: | 17.6 oz per 3x3ft | |
| Outdoor production: | 24,6 oz/plant | |
| Indoor height: | Medium | |
| Outdoor height: | Tall | |
| Features: | Very resinous | |
| Effects: | Powerful | |
| THC: | 20-23% | |
| CBD: | Low | |
| Flavor and aroma: | Red Fruits Sweet |
Yes, the shipment is 100% discreet, no one will know what you have bought, also the sender is SITE OF SHOPS ONLINE.
Yes, we ship to almost every country in the world although you need to know the current legislation in your country to make sure that you do not break any regulations with the germination of the seeds.
UK: 3-4 days (express)
USA: 4-5 days (express)
Australia: 4-5 days (express)
Japan: 4-5 days (express)
Canada: 4-5 days (express)
South Africa: 4-5 days (express)
New Zealand: 5-7 days (express)
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The customer must be informed about the laws of their country regarding seeds or other products that may be purchased on our website, the possession of which may constitute a criminal offence in the country of receipt.
We cannot be made responsible for the wrong use that some people decide to give to the seeds, so please don't act against your national laws.
Due to problems with customs you can check here for restrictions to certain countries.
We accept the following payment methods: Bank transfer, Cryptocurrencies, cash, credit and debit cards and cash on delivery (Spain, Belgium, France, Italy, Portugal).
You can change the currency on the top right to know the price of the products in your local currency and of course pay this way.
In 24/48 hours we will ship your order.
If you live in a country where the cultivation of cannabis is legal and you decide to plant the seeds, it is good that you know that all the seeds that we commercialize have germination guarantee.
If you germinate with the method of paper napkins and you have followed all the steps that we indicate here, you will only have to return us the seeds not germinated in their original packaging and when we receive them we will proceed to the change.
Then we take care of requesting the return to the seed bank, we do not transfer this responsibility and time to our customers.
If you receive a broken product due to transport, you have to notify us within 24 hours for insurance coverage, always contact us as soon as possible and we will fix the problem!
Among all those who comment or send us your questions, there will be a monthly raffle for a €50 voucher for your purchases at Pevgrow. What are you waiting for? Write us and participate!
I am really delighted with the feminized Rainbow Flakes seeds from Positronics Seeds that I bought at Pevgrow! Each of the seeds germinated without any issues and now they are growing strong and healthy. I always trust Pevgrow for my purchases because they never let me down; all the seeds I have acquired here have always turned out to be of excellent quality. Thank you Pevgrow for offering such reliable products!