Alpha 21 Feminized Seeds (AlphaFem Seeds)

AlphaFem Seeds
Feminized
Photoperiod
USA

Description

Alpha 21 Strain Info

The breeder of this strain, who's come a long way from humble trimmer to the founder of his own seedbank, created this Sativa-dominant marvel with ease of cultivation and product potency in mind. The legendary OG family serves as the backbone of this strain, which explains Alpha 21’s exceptional therapeutic potential and huge demand in the medical community.

Genetics

Alpha 21 is a hybrid resulting from crossing the flagship Totally Alpha OG with a pure Sativa line of Haze IBL, complemented by the addition of the Afghani landrace Zalla. The result is a plant whose clear Sativa dominance isn’t obvious in either its compact size or short flowering time, nor in its body-focused effects.

Flowering Time

The flowering time of Alpha 21 can be as short as 49 days (7 weeks) of 12/12 and rarely takes more than 63 days, so growers looking for fast-finishing cultivars can definitely find a phenotype of a record-breaking speed here.

Yields

Despite some variance in maturation times, the strain consistently produces up to 600 g/m² (2 oz/ft²) in indoor setups. Outdoors, yields depend on climate conditions as much as the love and care you’re willing to provide and may reach 600-800 g (1.3-1.76 lb) per plant.

Effects

Expect a potent full-body relaxation that will take care of anything that might have bothered you before, be it an aching body or nagging anxieties after a busy and stressful day. Alpha 21 is the perfect way to purge all that, stop caring about anything, and eventually fall asleep.

For Sleep
Medicinal
Happy

Medical Properties

The symptom relief generously offered by Alpha 21 includes all the usual suspects like stress, insomnia, anxiety, and of course, pain of any origin.

THC and CBD Levels

Alpha 21 is among the most potent strains bred by AlphaFem Seeds, as its THC content can go as high as 30%, with CBD levels clocking in at under 2%. This intimidating cannabinoid composition is one for long-time habitual smokers, while newbies should tread lightly and have no more than one shallow toke before venturing further.

Smell and Taste

Alpha 21's terpene profile offers spicy and woody notes of caryophyllene in its aroma, complemented by a pleasant sweetness upon the exhale, with delightful hints of citrus and earthiness from limonene and myrcene.

Wood
Sweet
Spice

Grow Tips

Despite the strong Sativa influence, these plants don’t grow taller than 120 cm (4 ft), which is a very convenient feature for limited spaces. However, even in this case, we recommend using ScrOG to train Alpha 21 so that its yields can reach their full potential.

  • Implement training to keep every top at the same distance from the light source.
  • Use trellising to provide support for heavy colas.
  • Ensure adequate ventilation to mitigate the risk of mold.

Alpha 21 Seeds

Get a record-breaking harvest with Alpha 21 feminized seeds, brought to you by Herbies! Guaranteed germination, 20+ years of experience, and top-rated customer service – that's our promise. Buy with confidence and do it today!

delivery Shipping: from 2 days
Reviews
4.9
61 reviews
  • Thumpz
    3 April 2025
    3 April 2025
    • General impressions

      This strain had me laughing like a kid watching a cartoon. A real favorite. Bright flavor, clean burn. Not too overpowering, perfect for chilling with the gang. I haven't had this much fun since high school.

    0
  • BudLord
    1 April 2025
    1 April 2025
    • General impressions

      Alpha 21 is pure rocket fuel, guys. It made big, fat colas with a citrusy scent and a hint of earth. I smoked it before a hike; I felt like I was flying. A must-have for active sessions.

    0
  • Stefanio
    1 April 2025
    1 April 2025
    • General impressions

      I've grown over 60 strains over the past 5 years, and Alpha 21 really impressed me. It has it all: it's resilient, has strong branching, produces big, meaty buds, and a dynamic high. It starts with a clear, euphoric high that transitions into a warm body stone. Perfect for group use or relaxing after work. I grew mine hydroponically under full-spectrum LEDs, and it responded extremely well to topping and defoliation. The trichome production was exceptional; it's great for pressing rosin. I'll definitely keep it in rotation.

    0
  • Sofia Khalid
    28 March 2025
    28 March 2025
    • General impressions

      From a medicinal perspective, Alpha 21 is effective for patients suffering from fatigue and mood disorders. It is invigorating without overstimulating. Easy to grow, even indoors, even in tight spaces. I used all the guides and tips on the blog. Thank you!

    0
  • Gerald
    14 March 2025
    14 March 2025
    • General impressions

      Growth was steady and flowering was completed on schedule. The buds were dense, resinous, and smelled divine! A truly excellent strain!

    0
  • just me
    13 March 2025
    13 March 2025
    • General impressions

      The delivery was very fast and discreet! I loved everything, thank you so much!

    0
  • Matthew
    4 March 2025
    4 March 2025
    • General impressions

      Perfect for a first grow! As a beginner, I was apprehensive about growing, but Alpha 21 made it easy! Ordering from AlphaFem Seeds was seamless, and my package arrived discreetly and quickly (about 8 days). All the seeds germinated without a hitch, and the plants were surprisingly forgiving; I made a few rookie mistakes, but they still thrived.

    0
  • Brie000
    4 March 2025
    4 March 2025
    • General impressions

      It's rare for a sativa-dominant strain to not cause me anxiety, but Alpha 21 is a real winner. A great energy boost without the crash. Bonus: it smells incredible while curing. A+.

    0
  • Sharon
    27 February 2025
    27 February 2025
    • Advantages
      I encountered a payment problem, so I contacted customer service. They responded within a few hours and explained the process to me. Once my order was confirmed, it was shipped quickly and arrived in less than 10 days.
    • General impressions

      Ultra-fast processing and discreet packaging

    0
  • Rock Star!
    22 February 2025
    22 February 2025
    • General impressions

      Alpha 21 is a well-selected strain that reveals its full quality from the first week of growth. I grew it indoors with a 300W LED and organic substrate. Its structure was compact but bushy, making it ideal for SCROG setups. Flowering lasted 9.5 weeks and the resulting buds were dense, frosty, and very aromatic, dominated by citrus and earthy notes. Its effect is calming without being sedating. Excellent for relieving anxiety or stress without mental confusion. I have since added it to my regular grow cycle and will definitely use it again.

    0
  • Jade
    21 February 2025
    21 February 2025
    • General impressions

      Fast shipping and stress-free growing

    0
  • Souler
    13 February 2025
    13 February 2025
    • General impressions

      I ordered 5 seeds and the package arrived in 3 days. Two seeds didn't germinate. I contacted support. They took care of me and sent me new seeds and bonuses. Everything is fine now, I'm delighted! Thank you!

    0
  • James
    10 February 2025
    10 February 2025
    • Advantages
      The buds were rock hard and covered in trichomes.
    • General impressions

      The smoke is smooth and the high is uplifting but still relaxing.

    0
  • Glenn
    9 February 2025
    9 February 2025
    • General impressions

      They grew fast and strong, and I got dense, frosty buds. The smoke is smooth and the effects are perfect. I wouldn't hesitate to buy from AlphaFem Seeds again!

    0
  • devil
    31 January 2025
    31 January 2025
    • General impressions

      I really liked the smoke—clean and flavorful—but the flowering time took longer than expected. It took me about 11 weeks to reach full maturity. The wait was worth it, but I was hoping for a faster result.

    0
  • Chef Dabbs V
    31 January 2025
    31 January 2025
    • General impressions

      Dude. This is the king of wake-up calls. I made pancakes under Alpha 21 and tasted the colors. The taste is lemony with a hint of pine. I call it "Liquid Sunshine."

    0
  • Stoney Rick
    28 January 2025
    28 January 2025
    • General impressions

      I grew three of these babies outdoors. No mold, no fuss. They thrived. A citrusy, diesel scent that turns heads. And the buzz? Mmmmm… Clean, focused, no paranoia. I love it for early mornings.

    0
  • Hitman
    27 January 2025
    27 January 2025
    • General impressions

      The packaging was discreet, no fuss, just the way I like it.

    0
  • Professor
    13 January 2025
    13 January 2025
    • General impressions

      Structurally impressive genetics. Alpha 21 showed consistent phenotypic expression, minimal intersex traits, and high trichome density. The effect is stimulating, cerebral, and does not impair motor skills—ideal for concentration tasks.

    0
  • Sultan
    10 January 2025
    10 January 2025
    • General impressions

      Mild and pleasant effect but I especially enjoyed the taste :) Very fragrant buds. Tried while still ripening - no bitterness, the taste is pleasant

    0
  • Tasha
    7 January 2025
    7 January 2025
    • General impressions

      Alpha 21 makes me want to clean the whole house and paint a mural. It's like an espresso, but with a smile. A truly powerful cerebral effect, but one that lingers pleasantly. I'd definitely do it again!

    0
  • Nathan
    5 January 2025
    5 January 2025
    • General impressions

      I've tried growing before with mixed results, but Alpha 21 was my first real success! The ordering process was simple, and my seeds arrived in discreet packaging in less than a week. Each seed germinated quickly, and the plants handled my rookie mistakes with ease.

    0
  • Heather
    4 January 2025
    4 January 2025
    • Advantages
      I got what I was looking for, fast delivery and easy payment methods
    • Disadvantages
      None so far
    • General impressions

      I will order from your store again.

    0
  • Delta 9 Harrington
    3 January 2025
    3 January 2025
    • General impressions

      HI! I've grown this strain multiple times, both hydroponically and in soil. Alpha 21 is the kind of cultivar that offers consistency, something not all breeders manage to do. I planted five seeds, and all five phenotypes had strong lateral branching, tight internodes, and huge calyxes. The trichome coverage is top-notch, perfect for extractions. I did a small press with rosin, and the yield was impressive. Power? To the stars. But what I really appreciate is that you can actually work with this plant. That's rare these days.

    0
  • Balthazar
    3 January 2025
    3 January 2025
    • Advantages
      Decent THC content, but maybe not 30%. But really hits hard.
    • General impressions

      Grows well and matches the description in terms of smell and effect. Only the yield is average. And the height is average. But it flowers quickly and blooms in a week. It will definitely find its admirer.

    0
  • Marco C.
    31 December 2024
    31 December 2024
    • General impressions

      Solid yield, fast growth, and significant stretching during the third week of flowering. I defoliated it twice, and it held up well. It smells like lemon cleaner and the spice rack had a baby. The effect is vivid. Incredibly motivating.

    0
  • Real
    22 December 2024
    22 December 2024
    • Advantages
      still in vegetation
    • Disadvantages
      still in vegetation
    • General impressions

      so far so good, all 3 germinated in 2 days, now 2 weeks in vegetation

    0
  • Charizzz
    20 December 2024
    20 December 2024
    • General impressions

      Excellent yield and potency, but the smell during flowering was a bit too strong for my stealth setup. I had to add carbon filters. Not suitable for stealth growers.

    0
  • Pharmacy
    16 December 2024
    16 December 2024
    • Advantages
      Good, powerful variety
    • Disadvantages
    • General impressions

      Generally, you get what you're promised. No complaints. I can recommend it and will try something else from them.

    0
  • Michelle
    7 December 2024
    7 December 2024
    • Advantages
      The buds are dense and well-structured, covered in a thick layer of frosty trichomes. When smoked or vaped, the flavor is sweet and lemony, with hints of pine and herbs on the exhale.
    • General impressions

      Good resin production and the whole experience was satisfying for me.

    0
Customer Ratings
61 ratings
Added to Wishlist Click to view your liked items
Added to Compare Click to compare items now
Removed from Wishlist
Removed from Compare
Link copied
Added to Cart Click to view your cart
Promo code copied Click here to proceed to your cart.