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Grapefruit Auto
€24.00
5/5
(5 Ratings)
Grapefruit by Fast Buds American Autoflowers has a sweet aroma and an even more intensely sweet flavor – highly recommended.
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Data sheet
Bank
Fast Buds
Seed type
Autoflowering
Available individually
No
Recommended use
Recreational
Recommended growing environment
Any
Cannabinoid profile
THC-dominant
Genotype
Sativa-dominant
Physical effect
Soft
Psychoactive effect
Relaxing
Indoor Flowering Time
9-10 weeks after germination
Outdoor Harvest Time
60+ days after germination
Flavor
Citrus
Flavor 2
Fruity
Climate
Warm
Description
Benefits of Growing Grapefruit Cannabis Seeds
Grapefruit by Fast Buds American Autoflowers is a stable plant that has the perfect structure for both indoors and outdoors, making it ideal for beginner growers that have never grown autoflowering plants yet. Anyone can grow this plant and enjoy its high yields, and intensely sweet flavor and aroma.
Growing Grapefruit Auto Indoors
Indoors it grows short with a large central stem which will grow about 70% of the plants’ total yield. It should be ready after just 67 days, yielding up to 500g per square meter with around 9 plants and a 600w light. It can become so resinous that the buds begin to look almost white.
Growing Grapefruit Auto Outdoors
Outdoors, it grows many more branches that attribute much more to the final yield. It does well when it comes to fungi and pest infestation, just take care not to water it too much at the start or you might accidentally dwarf your plants. It’ll take about a week longer to finish flowering outdoors, although you can harvest up to 170g per properly grown plant. For best results, use Sensi Bloom A&B PH Perfect.
Grapefruit Auto Effect and Aroma
It has quite a sour flavor which is kind of acidic, although it smells kind of like fresh frapes. It gives quite an indica effect for such a sativa plant, acting quickly and relaxing your body.
- Sativa/Indica: 70/30%
- Flowering: 9 weeks.
- Height: 0.6-1m indoors, 1-1.5m outdoors.
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12/09/2025
Amazing! It's been a month since germination and they're already almost a meter tall. They just started flowering and look super healthy. How is the smell in late flowering?
Translated from Spanish
¡Alucinante! Llevo un mes desde la germinación y ya miden casi un metro. Acaban de empezar a florecer y se ven súper sanas. ¿Qué tal el olor en floración avanzada?
03/09/2025
Really good, honestly. Indoors it gave me brutal quality, I was expecting less. Is it normal for an autoflower to be this productive? It really surprised me.
Translated from Spanish
Muy bien, la verdad. En interior me ha dado una calidad brutal, esperaba menos. ¿Es normal que sea tan productiva para ser automática? Me ha sorprendido mucho.
19/08/2025
Super happy with this one! Easy to grow, even for a beginner like me. The smell is fantastic and the yield was pretty decent for a small setup. Definitely recommend!
26/07/2025
Let's see how this mix does outdoor. Last time it gave me good results in big pots, but I want to see it in open ground. Any recommendations for an outdoor flowering nutrient?
Translated from Spanish
A ver qué tal viene este mix para el exterior. La última vez me dio buen resultado en macetas grandes, pero quiero verla en tierra madre. ¿Alguna recomendación de abono para floración en exterior?
26/10/2022
The strain is called Grapefruit. Which is pomelo/grapefruit (what this weed tastes like) and not "Grape"... it's unique like lavender... they taste like things no other weed tastes like. Don't know. To me it tastes like grapefruit alright. Top-tier weed.
Translated from Spanish
La variedad se llama Grapefruit. Que es pomelo (a lo q sabe esta hierba)y no "Grape" o uva...es unica como la lavender..saben a cosas q ninguna otra hierba sabe. No se. A mi me sabe a pomelo vaya. Hierbon.