Grapefruit Superstar (Amsterdam Genetics)

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Pure sativas often have a flowering period that lasts 12 weeks. But with a flowering period of only 8 to 9 weeks, Grapefruit Superstar is one of the fastest sativas available. And that with only 10% indica genetics, which you don't really notice in terms of effect. She has the typical head buzz of grandpa Jack Herer and 20% THC on board to give you an incomparable energetic high. Keep an eye on the carbon filters in the grow room, because she likes to leave a mark with a potent smell. Indoors, she can yield 500 grams per square meter, but outdoors with enough sun, such a sativa becomes huge. These feminized weed seeds are the way to go if you want to grow up to 1500 grams per plant with outdoor weed.

Info Specs Reviews

Fast growing and flowering sativa with a huge yield, 20% THC and strongly scented for a thrilling high: meet Grapefruit Superstar.

Characteristics Grapefruit Superstar Strain:

  • Short flowering plant for a sativa with such a high yield: only 8-9 weeks
  • 20% THC and a nice high that inspires creativity and energy
  • 500 grams per square meter (indoors) / 1500 grams per plant (outdoors)
  • Fresh, sweet and above all a penetrating aroma
  • Very suitable for beginner growers

Flavour and Effects Grapefruit Superstar Weed

Sweetness, fruit and most of all very strong smells come to you when you have Grapefruit Superstar. This plant is ideal if you like pure sativa weed and the energy and happiness that it usually gives. Happy and uplifting vibes are waiting for you. Ideal if you still have something to do during the day.

Growth and Yield

If you are growing indoors you do have to watch out for sudden growth spurts at the beginning of the flowering period. This is something that sativas are known for: they can grow twice as tall in a short period of time. So take the height of your grow room and the distance from the lamp(s) into account. Also make sure there is enough light to prevent the plant from stretching early on. Beginner growers will find that such a short flowering time is nice to harvest before the autumn rain starts. Experienced growers can even try to germinate these seeds 2 times in one year and grow them in the garden. Challenge accepted! Check out the specifications and the corresponding yields below. They are quite high, but they are to be expected for this plant.

Specifications Grapefruit Superstar Seeds:

  • Genetics: Grapefruit Superstar (A super fast sativa x Cinderella 99)
  • Indica / Sativa: 90% sativa, 10% indica
  • Location: Growing indoors, growing outdoors and growing in a greenhouse
  • Flowering period indoors: 8-9 weeks
  • Month of harvest outdoors: early October
  • Flavour: citrus, sweet, pungent (skunk)
  • Effect: high, happy, energetic, euphoric and creative
  • THC: 20%
  • CBD: 0.8%
  • CBN: 1%
  • Seeds: 3 or 5 feminized seeds
  • Yield indoors: 500 grams per square meter under ideal conditions
  • Yield outdoors: 1500 grams per plant under ideal conditions
  • Autoflower: No

*The abovementioned numbers are averages.

Use a Vaporizer

We recommend using a vaporizer for medical use, but also for recreational use. A vaporizer is a healthier way to enjoy the cultivated plants. In our webshop we have a huge range of high-quality vaporizers available directly from stock. That way you prevent tobacco from making you lethargic and drowsy and of course you from ingesting harmful tobacco at all.

About Amsterdam Genetics

Since 1985, renowned cannabis experts from the local coffee shop sector in Amsterdam have been applying their knowledge together. Their mission is to develop the best weed seeds on the planet. Amsterdam Genetics stands for the highest quality and the typical Amsterdam taste of weed. Amsterdam is the world’s capital city for weed and the undisputed birthplace of modern cannabis culture. By using classic genetics from the Netherlands’ capital city, Amsterdam Genetics wants to give everyone the freedom to enjoy the flavour of the city. They do this by hybridising the best genetics and developing the worldwide community. Not just as a seed bank. Amsterdam Genetics is represented by famous and prize-winning coffee shops. Now everyone can get to cultivate the self-developed and highly popular strains on the menu with Amsterdam Genetics’ quality seeds.

SKU G-2736
Brand Amsterdam Genetics
Family (Genetics) Sativa Dominant
Type Mix
Gender and Autoflower Feminised
Indoor / Outdoor Indoor, outdoor and greenhouse
From seed to Harvest (Autoflower) N/A - Non-autoflowering
Average Flowering Time 7-8 weeks
Average height 200-300 cm
Maximum Height (approximately) 300
Harvest month Start of October
Difficulty Easy Plants
Effects Cheerful, Energetic, Strong High
Mood Daytime, Get Creative
Taste Citrus, Pungent, Sweet
Special Feature Flowers early (outdoors)
Max. Yield Indoor (grams / m2) 500
Max. Outdoor yield (gram / plant) 1,500
THC percentage (average) 20
CBD percentage (average) 0.80
Rich in CBN
THC:CBD Ratio More THC than CBD
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