secure connectionRainbow Auto is like a fizzy fruit snack for your brain. It tastes like pineapple, smells like candy, and leaves you with a high that tingles in all the right ways without knocking you out.
Rainbow Auto is like a fizzy fruit snack for your brain. It tastes like pineapple, smells like candy, and leaves you with a high that tingles in all the right ways without knocking you out.
Rainbow Auto is a cheerful little powerhouse that delivers more than just eye candy. With its tropical fruit aroma and lively, uplifting buzz, this autoflower isn’t just about good looks. It performs. Expect sweet, candy-like flavors with a pineapple twist and a high that leans into focus, energy, and just enough tingle to keep things interesting. Fast-flowering, mold-resistant, and easy enough for first-timers, Rainbow Auto offers a reliable harvest whether you're working with a balcony, a tent, or a greenhouse.
If you’ve got the time and want to push yields to the limit, the Rainbow photoperiod version brings the full grower’s toolkit to the table.
Rainbow Auto is the autoflowering version of Rainbow, a strain celebrated for its flavor-heavy profile and vibrant, colorful buds. By crossing it with a hardy Ruderalis line, breeders created an autoflower that holds onto the fruity sweetness and vivid personality of the original while becoming way more beginner-friendly. The result is a compact, fast-growing plant that brings a little bit of tropical flair to just about any setup.
This one brings a playful combo of uplifting energy and crisp mental clarity. Rainbow Auto leans slightly indica, but you’d never guess it from the way it starts. It's bright, focused, and surprisingly arousing. Expect a strong sense of presence, a subtle body buzz, and enough zing to kick-start a creative streak or fuel a social evening.
The flavors are where Rainbow Auto really shines. Think sweet candy and ripe pineapple layered over soft, tropical fruit notes. There’s even a gentle piney finish that keeps things grounded without killing the fun. It’s the kind of terp blend that turns heads mid-joint and makes people say, “Wait, what is this?”
With 18% THC, Rainbow Auto brings enough potency to satisfy regular users while still being manageable for newcomers. It’s not going to knock you sideways unless you overdo it, but it’s strong enough to keep things interesting. The 1% CBD adds a light body-softening edge without dulling the mood.
This strain’s terpene profile brings together some real heavy hitters. Alpha Pinene and Beta Pinene give that crisp, piney sparkle on the nose and help sharpen focus. Limonene brings in the citrus brightness and keeps the energy upbeat, while Beta Caryophyllene adds just a hint of spice and body-melting relaxation. Linalool smooths everything out with a calming finish. Alpha Humulene balances it all with a clean, herbal depth. It’s a layered and fragrant ride from start to finish.
Rainbow Auto is a dream for beginners. It handles stress well, doesn’t mind a bit of temperature swing, and shrugs off mold and mildew better than most. Thanks to its autoflower genetics, it doesn’t need any light schedule tricks. Just give it good soil, decent light, and a bit of patience.
This strain is flexible and does well in tents, greenhouses, and sunny spots outdoors. Indoors, it’ll stay nicely compact at around 60 cm to 120 cm tall, which makes it ideal for tight spaces or stealth grows. Outdoors, it can stretch a bit taller, up to 150 cm, especially in warm climates, starting around 80 cm. It doesn’t need much training, but some light LST can help open up the canopy for a little boost in yield.
Thanks to its high resistance to fungi, it’s also a solid pick for growers in humid or mountainous regions where other strains might struggle.
You’re looking at a flowering time of around 56 to 70 days from seed to harvest, so it’s pretty speedy for an auto. Indoors, expect yields between 350 grams per m2 and 500 grams per m2 if conditions are dialed in. Outdoors, it can bring in a generous 400 grams per plant to 600 grams per plant when grown in full sun with proper care. It’s the kind of output that makes you smile, especially considering how little effort it takes.
If you’re after a fruity, uplifting auto that’s easy to grow and delivers on every front, including flavor, aroma, effect, and yield, Rainbow Auto is it. Whether you're planting your very first seed or just need a no-fuss favorite for your next run, this strain checks all the boxes. Order your Rainbow Auto seeds today from WeedSeedsExpress. You’ll get top-tier genetics, our germination guarantee, and fast, stealthy shipping to boot. Your next happy harvest starts here.
Click here for the full strain description.
| Lineage | Rainbow X Ruderalis |
| Flowering Type | autoflower |
| Gender | feminized |
| Genotype | Hybrid |
| Ratio | 35 % Sativa / 45 % Indica / 20 % Ruderalis |
| Grower Profile | Beginner |
| THC | Up to 18.00% |
| CBD | Up to 1.00% |
| CBG | Up to 2% |
| Yield Indoor | Up to 500 gr./m2 |
| Yield Outdoor | Up to 600 gr./plant |
| Height Indoor | Up to 120 cm |
| Height Outdoor | Up to 150 cm |
| Climate | Tropical, Temperate, Mountains, Mediterranean, Arid |
| Flowering Time | 56 to 70 days |
| Flavors | Fruity, Sweet, Candy, Pineapple |
| Terpines | Alpha Humulene, Alpha Pinene, Beta Caryophyllene, Beta Pinene, Delta Limonene, Linalool |
| Effects | Arousing, Energetic, Focused, Tingly, Uplifting |
Tried the Rainbow autoflower seeds for the first time, and I’m pretty happy with the results... vibrant colors, nice smell, and satisfactory yield.. i'd consider buying again
What does Rainbow Autoflower taste and smell like?
Sweet and fruity with candy-like notes, berry and citrus tones, hints of tropical fruit, and a subtle earthy/pine finish.
What are the effects and typical THC/CBD levels of Rainbow Autoflower?
Uplifting, euphoric, and creative at first, settling into a relaxing body effect. THC typically around 20–24%, with low CBD (<1%).
How long does Rainbow Autoflower take from seed to harvest?
Usually 9–11 weeks from seed to harvest under 18/6 or 20/4 light schedules.
How tall does Rainbow Autoflower get indoors and outdoors?
Indoors about 60 cm–100 cm; outdoors around 80 cm–120 cm, depending on conditions and phenotype. Gentle LST helps keep plants compact.
What yield can I expect indoors and outdoors with Rainbow Autoflower?
Indoors around 400 grams per m2–500 grams per m2. Outdoors approximately 80 grams per plant–150 grams per plant in ideal conditions.
Is Rainbow Autoflower easy to grow? Any tips for beginners?
Easy to moderate. Avoid topping after week 3; use gentle LST. Keep nutrients moderate, avoid overwatering, and aim for consistent light and airflow.
What climate and temperature does Rainbow Autoflower prefer?
A mild, sunny climate works best. Keep temperatures around 21 °C–26 °C. Aim for 50–60% RH in veg and 40–50% in bloom, and avoid frost.
Is Rainbow Autoflower feminized and what are its genetics?
Yes, it’s an autoflowering, feminized hybrid derived from Rainbow genetics with added ruderalis to enable automatic flowering.
Ordering Information
Our seed bank is primarily located in the EU (Haarlem, The Netherlands), so we can offer lightning-fast shipping to every country in the European Union.
We also have warehouses in the USA & Canada so that our customers across the Atlantic can receive their seeds just as quickly as our European customers.
You can find further details about our ordering conditions related to shipping, payment, and guarantees below.
Our goal is to give you the best experience possible! We ship your order quickly, offer free worldwide shipping, use discreet packaging, and guarantee delivery on all tracked orders.
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Our seeds have an average germination rate of 96%. To make sure you have a 100% germination rate, we add free seeds with every standard seedpack (Not applicable to 3-packs or BOGO Deals). In case of germination issues, feel free to contact us any time so we can work towards a solution.
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