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WHAM BOOM Feminized Seeds – Anesia Seeds · 39% THC Vanilla-Nut Hybrid

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WHAM BOOM feminized seeds by Anesia Seeds are a perfectly balanced 50/50 hybrid that packs an astronomical punch of up to 39% THC. Crossing Wham with RS54, this strain delivers a creamy vanilla and nutty flavor profile. Expect massive yields, a euphoric creative rush, and a deeply relaxing finish. Ideal for growers seeking extreme potency and gourmet terpenes.
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WHAM BOOM feminized seeds by Anesia Seeds are the ultimate 50/50 hybrid powerhouse, engineered to deliver an earth-shattering 39% THC and a gourmet vanilla-nut terpene profile. This strain redefines extreme potency, giving you a massive euphoric rush followed by profound physical relaxation, all while producing championship-level yields in your grow room.

There’s a lot of hype and misinformation out there when it comes to "extreme THC" strains, with many growers believing that anything over 30% is just a marketing gimmick or impossible to grow without a master's degree in botany.

This confusion leads to serious FOMO or, worse, buying unstable genetics that promise the moon but deliver airy buds, hermies, and a weak high. You end up wasting three months of nutrients, electricity, and your precious time, thinking that ultra-potent strains are just a myth and settling for average harvests.

WHAM BOOM is the undeniable proof that you can have it all: stable genetics, ridiculous potency, and straightforward cultivation. This description is your no-bullshit guide to understanding exactly what this vanilla-scented beast can do, helping you maximize your yield and experience the true meaning of a 39% THC knockout.

Typical myths about extreme THC hybrids

  • Myth: 39% THC means it's incredibly fragile and hard to grow. Reality: Thanks to its robust Wham x RS54 lineage, it is highly resilient and vigorous in both indoor and outdoor setups.
  • Myth: Balanced hybrids don't yield as well as pure Indicas. Reality: This beast pushes up to 600 g/m² (1.97 oz/ft²) indoors, proving that potency and yield can go hand in hand.
  • Myth: High THC ruins the flavor profile. Reality: The creamy vanilla and roasted nut terpenes are incredibly pronounced, making it a gourmet smoke.
  • Myth: It will just put you to sleep instantly. Reality: The 50% Sativa genetics kick in first with a creative, euphoric rush before the heavy Indica relaxation takes over.

What WHAM BOOM really does (and what it doesn't)

This strain brings an intense, multifaceted high to the table. It starts with a massive cerebral sativa boost that fills your head with creative ideas and a euphoric energy. It’s perfect for chilling with friends or brainstorming your next crazy project. But as that wave subsides, the indica side takes the wheel, melting your muscles and locking you into a state of deep, serene relaxation.

It drastically improves your stash quality. If you love complex terpenes, the seductive vanilla aroma mixed with warm, earthy nuttiness will pamper your taste buds from the first drag to the last. It’s a top-tier choice for making premium rosin or just rolling up a fat, flavorful joint.

However, what it cannot do is act as your daily "wake and bake" companion if you have a busy schedule. That 39% THC is no joke—it will eventually sit you down. It also won't forgive severe overfeeding, so keep your nutrient schedule dialed in and don't push it too hard just because it's a heavy yielder.

Advantages and benefits when used properly

  • Because it has a perfect 50/50 genetic split, you get a beautifully balanced high, which means you can enjoy a creative spark before melting into the couch.
  • Thanks to its Wham x RS54 lineage, it produces incredibly dense, resin-soaked buds, which means your extracts and concentrates will be out of this world.
  • Because it yields up to 1.20 kg/plant (2.65 lb/plant) outdoors, you maximize your harvest space, which means fewer plants are needed for a massive stash.
  • Thanks to its creamy vanilla and nut terpene profile, the smoke is exceptionally smooth, which means you get a gourmet tasting experience without any harshness.
  • Because it finishes flowering in just 65-70 days, you avoid late-season bad weather, which means a stress-free outdoor harvest in early October.

Tips to choose well according to your expectations

WHAM BOOM is a versatile strain, but knowing what you want out of it will help you tailor your grow. Whether you are hunting for record-breaking yields or the most intense flavor profile possible, a few tweaks in your setup can make all the difference.

  • If you expect massive indoor yields, pay attention to your canopy management; techniques like SCROG work wonders to maximize light penetration.
  • If you expect the absolute best flavor, pay attention to a proper 2-4 week cure in glass jars to truly bring out those sweet vanilla notes.
  • If you expect to stay productive all day, pay attention to your dosage—this is a heavy hitter that demands respect.
  • If you expect a smooth outdoor grow, pay attention to your local climate; it thrives best when harvested by early October before the heavy rains hit.

Technical specifications

  • Breeder: Anesia Seeds
  • Type: Feminized photoperiod
  • Dominance: 50% Indica / 50% Sativa
  • Genetics: Wham x RS54
  • Flowering time: 65-70 days (approx. 9-10 weeks)
  • Outdoor harvest: Early October (Northern Hemisphere)
  • Yield Indoor: Up to 600 g/m² (1.97 oz/ft²)
  • Yield Outdoor: 0.90–1.20 kg/plant (1.98–2.65 lb/plant)
  • Height Indoor: 1.00–1.40 m (3.28–4.59 ft)
  • Height Outdoor: 1.60–2.20 m (5.25–7.22 ft)
  • THC: 32-39%
  • Aroma/Flavor: Vanilla, nutty, creamy, sweet, earthy nuances.

Advice on how to grow WHAM BOOM

Start your grow safely by providing the perfect environment for delicate seedlings.

During the vegetative phase, focus on building a strong structure to support heavy yields.

The flowering stage requires strict environmental control to maximize resin production and avoid mold.

Proper harvesting and curing will lock in those gourmet vanilla and nutty terpenes.

  • Chop when trichomes are milky with some amber.
  • Dry slowly at 18-22 °C in a dark room.
  • Cure in glass jars for 2-4 weeks.
  • Burp jars daily to release excess moisture.

Frequently Asked Questions

Does WHAM BOOM really reach 39% THC?

Yes, under optimal growing conditions with dialed-in lighting and nutrition, this strain can push the boundaries of THC production, reaching up to 39%. However, even in an average setup, you can expect extreme potency well over the 30% mark.

Can I use it for daytime smoking?

It depends on your tolerance. While it starts with an energetic and creative sativa kick, the heavy indica genetics will eventually take over, leading to deep physical relaxation. It's generally better suited for late afternoon or evening use.

What's the difference compared to pure Indicas?

Unlike a pure indica that might instantly lock you to the couch, WHAM BOOM offers a balanced 50/50 experience. You get a euphoric, cerebral head high first, making it much more dynamic and fun before the heavy body stone sets in.

Personal Experience of Pevgrow’s CEO (Alan)

I hear it all the time: "Alan, there's no way a seed can hit nearly 40% THC, it's just marketing." I used to be skeptical too, until I popped a few WHAM BOOM beans in our test tent. Let me tell you, the myths about these ultra-potent hybrids being unstable or lacking flavor are completely busted here. The vigor during veg was impressive, and once it hit week 5 of flower, the smell of sweet vanilla and roasted nuts was so loud we had to double-check our carbon filters.

When it came time to test the final product, it absolutely blew my mind. The initial hit is pure sativa joy—you feel like you can conquer the world. But give it an hour, and you'll be melting into your sofa wondering where the time went. It’s not a toy, and I highly recommend respecting its power. If you want a gourmet smoke that delivers a true knockout punch, this is exactly what you should expect.



  • Is the shipping discreet?

    Yes, the shipment is 100% discreet, no one will know what you have bought, also the sender is SITE OF SHOPS ONLINE.

  • Do you ship worldwide?

    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)
    View all

    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.

  • What payment methods and currencies do you accept?

    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.

  • How long does it take to ship my order?

    In 24/48 hours we will ship your order.

  • Are the seeds guaranteed to germinate?

    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.

  • What if I receive a bad or damaged product?

    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!

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