Go Big This 4/20: More Seeds, More Freebies, More Reasons to Stock Up
From April 13 to April 26, Herbies turns 4/20 into your perfect moment to stock up for the season ahead. If you’ve been waiting for a chance to grab more seeds, try new strains, or build a stronger grow lineup in one order, this is it.
Here’s what’s waiting for you during the promo:
- Buy 3 packs, get the cheapest one free with code BIG420*
- Get 6 extra seeds with any mix pack order using code MIX420*
- Enter for a chance to win 1 of 10 merch gift boxes
- Get your regular bonus seeds
- Unlock tiered discounts
- Qualify for free shipping
*Only one promo code can be applied per order.
This one is all about getting extra value from the same cart – added seeds and even stronger reasons to feel good at checkout.
Why a Fuller Order Makes More Sense During 4/20
This deal works best when you build a fuller order instead of stopping at just one or two packs. With BIG420, the cheapest pack goes free for every 3 packs in your cart, so the value becomes easier to feel once you start combining more items in one checkout.
BIG420
From 00:00 on April 13 to 00:00 on April 26 (PDT), for every 3 packs ordered, get the least expensive one free using the code BIG420.
Your usual Herbies perks add even more value at checkout, including one bonus seed with every order, extra seeds for every $ 23.45 spent, tiered discounts as your cart grows, and free shipping where your order qualifies. Hit 9% off to stack a free pack, the biggest discount, and a whole lot of extra free seeds in one order.
If you’re wondering what to add to your cart to make the most of the offer, here are some strong picks worth a look.
Alpha 21 (AlphaFem Seeds) – The Sleeper Build
- Photoperiod
- Knockout strong medicine
- 600 g/m² indoors
600 - 800 g/plant outdoors
Alpha 21 is a strong pick for growers who want serious potency, fast flowering, and deeply physical effects. This Sativa-dominant hybrid can reach 30% THC, finishes in as little as 49-63 days, and produces up to 600g/m² (2oz/ft²) indoors. Built from Totally Alpha OG, Haze IBL, and Zalla, it delivers full-body relaxation with a calm, happy drift that can easily turn into sleep. Expect a terpene profile rich in wood and spice, softened by sweetness, citrus, and a touch of earth.
Northern Lights 10 of 10 (Seedkeepers) – The Legendary Knockout
- Photoperiod
- Dreamlike calm
- 500 - 600 g/m² indoors
700 - 800 g/plant outdoors
Northern Lights 10 of 10 is a strong pick for growers who want a fast-finishing classic with modern-day power. This Indica-dominant strain delivers up to 35% THC, flowers in just 50-55 days, and produces 500-600g/m² (1.6-2oz/ft²) indoors. Its dense, resin-rich buds make it especially appealing for fans of potent evening smoke and extractions. Expect deeply relaxing effects with a happy, social edge, plus a smooth mix of earthy, citrusy, and lightly juniper-like flavors.
Bruce Banner Fast Version (EGS) – The Fast-Acting Heavy Hitter
- Photoperiod
- Euphoric energy
- 450 - 500 g/m² indoors
600 g/plant outdoors
Bruce Banner Fast Version is a smart pick for growers who want top-shelf potency without the usual wait. This Indica-dominant strain delivers up to 31% THC, finishes in just 50-55 days, and produces up to 450-500g/m² (1.5-1.6oz/ft²) indoors. Its effects blend bright euphoria, steady energy, and a warm body buzz, making it a standout for experienced smokers and high-tolerance users. Expect a bold terpene profile with diesel, fruit, earth, and a touch of sweetness on the exhale.
Runtz Auto (Barney’s Farm) – The Quick Harvest Treat
- Autoflowering
- Kick ass euphoria
- 600 g/m² indoors
700 g/plant outdoors
Runtz Auto is a great pick for growers who want dessert-like flavor without a long wait. This Indica-dominant auto finishes in just 9-10 weeks and can deliver up to 600g/m² (2oz/ft²) indoors, making it a strong option for a quick, generous run. Its effects lean soothing and euphoric, helping melt away everyday stress while keeping the mood light and positive. Expect a lush terpene profile packed with tropical fruit and sugary candy sweetness.
Want a few solid picks to start with? Check out our Herbies Recommends collection.
The Simple Way to Stock Up? Get a Mix Pack
If you want a bigger haul without spending forever comparing separate packs, mix packs are one of the easiest ways to shop this promo well.
During 4/20, every mix pack order comes with 6 extra seeds when you use promo code MIX420, giving you even more value on top of the usual perks. It’s an easy way to add variety to your stash, try several strains at once, and build a more interesting grow without overcomplicating your cart.
Mix packs are especially handy if you want:
- more strain variety in one purchase
- a fuller grow lineup with less guesswork
- extra value without having to build everything pack by pack
Heavy Kickers Mix (Herbies Seeds) – The Heavyweight Lineup
- Photoperiod
- THC knock-out
- No official information
Heavy Kickers Mix is made for growers who like serious potency and full-on flavor. Inside, you’ll find Godzilla Original Glue GG#4, Mimosa Shot, and Grandmommy Purple – a powerful trio with 29-33% THC. The strains finish around a similar time, which makes this mix an easy choice for growers who want a strong, consistent run with heavyweight results.
Superior Auto Mix (Herbies Seeds) – The All-Day Auto Trio
- Autoflowering
- No official information
- Potent boost
Superior Auto Mix brings together Apple Betty Auto, Grandmommy Purple Auto, and Bruce Banner #3 Auto. These autos deliver up to 29% THC, plenty of flavor, and a flexible smoking range that covers brighter daytime sessions along with heavier evening vibes. It’s a strong pick for growers who want potent autos with variety and convenience.
Beginner Auto Mix (Herbies Seeds) – The Easy Start Pack
- Autoflowering
- Belly laugh therapy
- No official information
Beginner Auto Mix combines Godzilla Cookies Auto, Ape Fruit Auto, and Purple Chill Auto in one easy bundle. With up to 27% THC, generous yields, and beginner-friendly growth, this mix is a great starting point for newer growers who want a smoother path to a rewarding harvest.
Looking for more options? Explore our full collection of mix packs and find the one that fits your grow style best.
10 Gift Boxes Are Also Up for Grabs
There’s one more extra on top of the seed value. Every qualifying order placed between April 13 and April 26 is automatically entered into a post-promo giveaway, where 10 winners will receive a gift box packed with 16 Herbies goodies. Highlights include a T-shirt, bandana, grinder, and germination kit, along with a full lineup of useful smoking accessories, stash essentials, and branded merch. It’s a bonus, not the main reason to shop – but it’s a nice extra to have waiting in the background while you load up on seeds.
Build Your 4/20 Haul While It Lasts
This promo is all about getting more out of one order – more seeds, more variety, more bonus value, and more reasons to feel good about what lands in your stash. Size up where it makes sense and don’t sleep on the mix packs, especially if you want the easiest path to a fuller haul.
Shop the 4/20 promo now and build a cart that goes big the smart way.
Herbies Head Shop expressly refuses to support the use, production, or supply of illegal substances. For more details read our Legal Disclaimer.
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