H16-web-banner-price-drop-alert
H16-web-banner
H16-web-banner-Fire
H16-web-banner-Roots
previous arrow
next arrow
NUTRIENT CALCULATOR
FOLIAR DIRECTIONS
Become a Retailer

Interested in selling HEAVY 16 products at your store?

RETAILER SIGN-UP
Newsletter Signup

Stay up to date on the latest and greatest at HEAVY 16!

NEWSLETTER SIGN-UP

HEAVY 16 PROFESSIONAL PLANT NUTRIENTS PROVIDE GROWERS WITH A STREAMLINED AND POTENT SYSTEM FOR ACHIEVING THE MOST DEMANDING AGRICULTURAL GOALS.

PREMIUM RAW INGREDIENTS

COMPLEX FORMULATION

ARTISANAL MICRO-BATCH BLENDING

COMPLEX FORMULAS. SIMPLE APPLICATION. PREMIUM RESULTS.

  • Picking up only the best 😎🤘

Veg A&B delivers balanced macros + micros, multiple forms of nitrogen and calcium, and a steady nutrient release that builds strong roots, thick tissue, and a resilient structure that can handle high light and CO₂ 🌿

Bud A&B picks up right where Veg leaves off, pushing density, oil production, and overall quality with highly bioavailable P/K, premium chelators, and elevated trace elements for a true top-shelf finish 🚀

Both are crafted with HEAVY’s premium raw inputs and micro-batch blending, giving you a clean, powerful, streamlined base that works in hydro, coco, or soil — without complicating the feed chart 🤟

Use Veg A&B + Bud A&B as your foundation, stack your favorite HEAVY additives, and you’ve got everything your plants need from start to finish! 👊

Video: @mrcalibear
  • HEAVY is here to bring your garden to the next level 🚀

The HEAVY lineup was created with both science and growers in mind — leaning on simplicity of use, without sacrificing the complex chemistry that sets our lineup apart 🧪

Kick things off with Veg A&B — balanced macros/micros + multiple calcium and nitrogen sources that build strong structure and vascular strength from day one. Pair it with Prime to boost microbial life, improve soil chemistry, and elevate brix, aroma, and overall plant vigor.

As bloom begins, Bud A&B steps in with fast-acting P/K and enhanced trace elements for dense, high-quality flowers. Layer in Fire for a powerful late-phase P/K ramp that drives heavy stacking, resin, and true genetic expression.

Support the whole run with Foliar for direct leaf-fed calcium and micros, helping with tissue strength and stress resistance. Then close the cycle cleanly with Finish — restoring medium balance, flushing excess salts, and sharpening color, aroma, and final weight.

Strong start. Stronger finish. 💪

#HEAVY16 #HEAVY16Nutrients #GetBigGetHEAVY #BigGrowerPreferred #GrowWithHEAVY
  • 🐱 Something about HEAVY has this shop cat interested!

Dropping by farms AND shops is one of the best part of our jobs! Growing with HEAVY or selling our lineup to customers? Let us know where you are and we’d be stoked to check out your spot when we get to your area! 🤝

(P.S. if this is your cat, let us know! We’ve been looking for the source 🔍)

#HEAVY16 #GetBigGetHEAVY
  • Riding in style 😎🤟

Dropping by farms AND shops is one of the best part of our jobs! Growing with HEAVY or selling our lineup to customers? Let us know where you are and we’d be stoked to check out your spot when we get to your area! 🤝

#Heavy16 #Heavy16Nutrients #Heavy16Fam #GetBigGetHeavy
  • Running HEAVY will have you feeling like a king 👑😎

Lil throwback shot from the folks over at @greencoasthydro_lax 💪
  • Monster root growth and rhizosphere health 💥

As a root promoter, Heavy Roots will increase branching of lateral roots, but more importantly, it will significantly increase the quantity and size of the true absorption zone, the root hair. But that isn’t all it can do! 🌿

As a root protector, Heavy Roots will elicit naturally induced resistances, or specifically, give the plant a complex layer of systemic acquired resistance (SAR). Tapping the plants evolutionary predisposition to ward off pestilence, we promote these hidden genetic gems through extremely fine derivatives. The result is that the plant becomes more resilient against fungal pathogens as well as insects 🐜

As a drip cleaner and anti-precipitate, Heavy Roots, through its outstanding composition of natural ingredients, will protect against lockout caused by poor water or base nutrients, exotic nutritional programs or faulty mixing methodologies. Heavy Roots will also keep your equipment and media free from salt buildup and scale! 💧

#GrowSmart #GrowYourOwn #GrowWithHEAVY #Indoor #Outdoor
  • No need to pH when you’re running HEAVY 💪

PRIME, our centerpiece, sets the pH for you via complex organic acids! If your water source is roughly between 5.5 and 8.0 on pH scale, PRIME’s complexion will naturally titrate pH, eliminating the need for hard acids in the garden 🌱

One less step in your routine so that you can spend time where it matters most! 😎

#HEAVY16 #HEAVY16Official #TheMoreYouKnow #GrowYourOwn #BigYields
  • Need some tips on how to use HEAVY Foliar? You came to the right place! 📝

HEAVY FOLIAR is highly versatile and can be used alone or with other products. Mixing HEAVY FOLIAR with HEAVY ROOTS and HEAVY FIRE allows a for a comprehensive nutritional delivery in both phases of plant development. HEAVY FOLIAR can be mixed with pesticides, fungicides, soaps or oils.

We recommend spraying every three days for optimal nutrition uptake. If you prefer to spray every day, we recommend using the HEAVY FOLIAR recipe at half strength. For best results, spray your crop from seedling up until the fourth week on flowering crops. Please note that there is no need to adjust the pH of the FOLIAR formula after mixing, but that FOLIAR should be sprayed within three days of mixing!

🌿 Mix HEAVY FOLIAR with water, adding HEAVY16 Products in order as listed on the schedule on our website

🌿 Lightly mist plants every 3 days during foliar periods. Avoid drenching foliage.

🌿 You can spray HEAVY FOLIAR lights on or off; our recommendation is to spray at first light.

🌿 Do not adjust pH of FOLIAR mixture.

🌿 Use FOLIAR mixture within 3 days of dilution with water.

🌿 An oily sheen on leaves is normal.

#HEAVYFoliar #FoliarSpray #HEAVY16 #HEAVY16Nutrients #GrowWithHEAVY
  • Start ‘em early 😎

Always stoked to see the kids help out in the garden — even better when you’ve got them running HEAVY from the jump! 🤘

#HEAVY16 #HEAVY16Nutrients #HEAVY16Fam
  • When your plants hit flower, everything matters: and HEAVY Fire delivers 🔥🌿

Designed with real plant science, Fire is a high-performance bloom stimulant that performs just as well indoors as it does outdoors. Whether you’re running a dialed-in room or growing under the sun, it adapts seamlessly to your environment.

Powered by HEAVY 16’s cascading phosphorus delivery system, Fire feeds your plants at multiple stages—supporting early transition, peak bloom, and late-stage development for consistent results from start to finish.

✔️ Stronger plant performance & vigor
✔️ Improved bud development & root support
✔️ Reliable results in any grow setup

No matter where you grow… bring the heat.

#HEAVY16 #HeavyFire #GetBigGetHEAVY #IndoorGrow #OutdoorGrow
Picking up only the best 😎🤘 Veg A&B delivers balanced macros + micros, multiple forms of nitrogen and calcium, and a steady nutrient release that builds strong roots, thick tissue, and a resilient structure that can handle high light and CO₂ 🌿 Bud A&B picks up right where Veg leaves off, pushing density, oil production, and overall quality with highly bioavailable P/K, premium chelators, and elevated trace elements for a true top-shelf finish 🚀 Both are crafted with HEAVY’s premium raw inputs and micro-batch blending, giving you a clean, powerful, streamlined base that works in hydro, coco, or soil — without complicating the feed chart 🤟 Use Veg A&B + Bud A&B as your foundation, stack your favorite HEAVY additives, and you’ve got everything your plants need from start to finish! 👊 Video: @mrcalibear
2 days ago
View on Instagram |
1/10
HEAVY is here to bring your garden to the next level 🚀

The HEAVY lineup was created with both science and growers in mind — leaning on simplicity of use, without sacrificing the complex chemistry that sets our lineup apart 🧪

Kick things off with Veg A&B — balanced macros/micros + multiple calcium and nitrogen sources that build strong structure and vascular strength from day one. Pair it with Prime to boost microbial life, improve soil chemistry, and elevate brix, aroma, and overall plant vigor.

As bloom begins, Bud A&B steps in with fast-acting P/K and enhanced trace elements for dense, high-quality flowers. Layer in Fire for a powerful late-phase P/K ramp that drives heavy stacking, resin, and true genetic expression.

Support the whole run with Foliar for direct leaf-fed calcium and micros, helping with tissue strength and stress resistance. Then close the cycle cleanly with Finish — restoring medium balance, flushing excess salts, and sharpening color, aroma, and final weight.

Strong start. Stronger finish. 💪

#HEAVY16 #HEAVY16Nutrients #GetBigGetHEAVY #BigGrowerPreferred #GrowWithHEAVY
HEAVY is here to bring your garden to the next level 🚀 The HEAVY lineup was created with both science and growers in mind — leaning on simplicity of use, without sacrificing the complex chemistry that sets our lineup apart 🧪 Kick things off with Veg A&B — balanced macros/micros + multiple calcium and nitrogen sources that build strong structure and vascular strength from day one. Pair it with Prime to boost microbial life, improve soil chemistry, and elevate brix, aroma, and overall plant vigor. As bloom begins, Bud A&B steps in with fast-acting P/K and enhanced trace elements for dense, high-quality flowers. Layer in Fire for a powerful late-phase P/K ramp that drives heavy stacking, resin, and true genetic expression. Support the whole run with Foliar for direct leaf-fed calcium and micros, helping with tissue strength and stress resistance. Then close the cycle cleanly with Finish — restoring medium balance, flushing excess salts, and sharpening color, aroma, and final weight. Strong start. Stronger finish. 💪 #HEAVY16 #HEAVY16Nutrients #GetBigGetHEAVY #BigGrowerPreferred #GrowWithHEAVY
5 days ago
View on Instagram |
2/10
🐱 Something about HEAVY has this shop cat interested! Dropping by farms AND shops is one of the best part of our jobs! Growing with HEAVY or selling our lineup to customers? Let us know where you are and we’d be stoked to check out your spot when we get to your area! 🤝 (P.S. if this is your cat, let us know! We’ve been looking for the source 🔍) #HEAVY16 #GetBigGetHEAVY
1 week ago
View on Instagram |
3/10
Riding in style 😎🤟 Dropping by farms AND shops is one of the best part of our jobs! Growing with HEAVY or selling our lineup to customers? Let us know where you are and we’d be stoked to check out your spot when we get to your area! 🤝 #Heavy16 #Heavy16Nutrients #Heavy16Fam #GetBigGetHeavy
1 week ago
View on Instagram |
4/10
Running HEAVY will have you feeling like a king 👑😎

Lil throwback shot from the folks over at @greencoasthydro_lax 💪
Running HEAVY will have you feeling like a king 👑😎 Lil throwback shot from the folks over at @greencoasthydro_lax 💪
2 weeks ago
View on Instagram |
5/10
Monster root growth and rhizosphere health 💥

As a root promoter, Heavy Roots will increase branching of lateral roots, but more importantly, it will significantly increase the quantity and size of the true absorption zone, the root hair. But that isn’t all it can do! 🌿

As a root protector, Heavy Roots will elicit naturally induced resistances, or specifically, give the plant a complex layer of systemic acquired resistance (SAR). Tapping the plants evolutionary predisposition to ward off pestilence, we promote these hidden genetic gems through extremely fine derivatives. The result is that the plant becomes more resilient against fungal pathogens as well as insects 🐜

As a drip cleaner and anti-precipitate, Heavy Roots, through its outstanding composition of natural ingredients, will protect against lockout caused by poor water or base nutrients, exotic nutritional programs or faulty mixing methodologies. Heavy Roots will also keep your equipment and media free from salt buildup and scale! 💧

#GrowSmart #GrowYourOwn #GrowWithHEAVY #Indoor #Outdoor
Monster root growth and rhizosphere health 💥 As a root promoter, Heavy Roots will increase branching of lateral roots, but more importantly, it will significantly increase the quantity and size of the true absorption zone, the root hair. But that isn’t all it can do! 🌿 As a root protector, Heavy Roots will elicit naturally induced resistances, or specifically, give the plant a complex layer of systemic acquired resistance (SAR). Tapping the plants evolutionary predisposition to ward off pestilence, we promote these hidden genetic gems through extremely fine derivatives. The result is that the plant becomes more resilient against fungal pathogens as well as insects 🐜 As a drip cleaner and anti-precipitate, Heavy Roots, through its outstanding composition of natural ingredients, will protect against lockout caused by poor water or base nutrients, exotic nutritional programs or faulty mixing methodologies. Heavy Roots will also keep your equipment and media free from salt buildup and scale! 💧 #GrowSmart #GrowYourOwn #GrowWithHEAVY #Indoor #Outdoor
2 weeks ago
View on Instagram |
6/10
No need to pH when you’re running HEAVY 💪

PRIME, our centerpiece, sets the pH for you via complex organic acids! If your water source is roughly between 5.5 and 8.0 on pH scale, PRIME’s complexion will naturally titrate pH, eliminating the need for hard acids in the garden 🌱

One less step in your routine so that you can spend time where it matters most! 😎

#HEAVY16 #HEAVY16Official #TheMoreYouKnow #GrowYourOwn #BigYields
No need to pH when you’re running HEAVY 💪 PRIME, our centerpiece, sets the pH for you via complex organic acids! If your water source is roughly between 5.5 and 8.0 on pH scale, PRIME’s complexion will naturally titrate pH, eliminating the need for hard acids in the garden 🌱 One less step in your routine so that you can spend time where it matters most! 😎 #HEAVY16 #HEAVY16Official #TheMoreYouKnow #GrowYourOwn #BigYields
2 weeks ago
View on Instagram |
7/10
Need some tips on how to use HEAVY Foliar? You came to the right place! 📝

HEAVY FOLIAR is highly versatile and can be used alone or with other products. Mixing HEAVY FOLIAR with HEAVY ROOTS and HEAVY FIRE allows a for a comprehensive nutritional delivery in both phases of plant development. HEAVY FOLIAR can be mixed with pesticides, fungicides, soaps or oils.

We recommend spraying every three days for optimal nutrition uptake. If you prefer to spray every day, we recommend using the HEAVY FOLIAR recipe at half strength. For best results, spray your crop from seedling up until the fourth week on flowering crops. Please note that there is no need to adjust the pH of the FOLIAR formula after mixing, but that FOLIAR should be sprayed within three days of mixing!

🌿 Mix HEAVY FOLIAR with water, adding HEAVY16 Products in order as listed on the schedule on our website

🌿 Lightly mist plants every 3 days during foliar periods. Avoid drenching foliage.

🌿 You can spray HEAVY FOLIAR lights on or off; our recommendation is to spray at first light.

🌿 Do not adjust pH of FOLIAR mixture.

🌿 Use FOLIAR mixture within 3 days of dilution with water.

🌿 An oily sheen on leaves is normal.

#HEAVYFoliar #FoliarSpray #HEAVY16 #HEAVY16Nutrients #GrowWithHEAVY
Need some tips on how to use HEAVY Foliar? You came to the right place! 📝 HEAVY FOLIAR is highly versatile and can be used alone or with other products. Mixing HEAVY FOLIAR with HEAVY ROOTS and HEAVY FIRE allows a for a comprehensive nutritional delivery in both phases of plant development. HEAVY FOLIAR can be mixed with pesticides, fungicides, soaps or oils. We recommend spraying every three days for optimal nutrition uptake. If you prefer to spray every day, we recommend using the HEAVY FOLIAR recipe at half strength. For best results, spray your crop from seedling up until the fourth week on flowering crops. Please note that there is no need to adjust the pH of the FOLIAR formula after mixing, but that FOLIAR should be sprayed within three days of mixing! 🌿 Mix HEAVY FOLIAR with water, adding HEAVY16 Products in order as listed on the schedule on our website 🌿 Lightly mist plants every 3 days during foliar periods. Avoid drenching foliage. 🌿 You can spray HEAVY FOLIAR lights on or off; our recommendation is to spray at first light. 🌿 Do not adjust pH of FOLIAR mixture. 🌿 Use FOLIAR mixture within 3 days of dilution with water. 🌿 An oily sheen on leaves is normal. #HEAVYFoliar #FoliarSpray #HEAVY16 #HEAVY16Nutrients #GrowWithHEAVY
3 weeks ago
View on Instagram |
8/10
Start ‘em early 😎

Always stoked to see the kids help out in the garden — even better when you’ve got them running HEAVY from the jump! 🤘

#HEAVY16 #HEAVY16Nutrients #HEAVY16Fam
Start ‘em early 😎 Always stoked to see the kids help out in the garden — even better when you’ve got them running HEAVY from the jump! 🤘 #HEAVY16 #HEAVY16Nutrients #HEAVY16Fam
3 weeks ago
View on Instagram |
9/10
When your plants hit flower, everything matters: and HEAVY Fire delivers 🔥🌿

Designed with real plant science, Fire is a high-performance bloom stimulant that performs just as well indoors as it does outdoors. Whether you’re running a dialed-in room or growing under the sun, it adapts seamlessly to your environment.

Powered by HEAVY 16’s cascading phosphorus delivery system, Fire feeds your plants at multiple stages—supporting early transition, peak bloom, and late-stage development for consistent results from start to finish.

✔️ Stronger plant performance & vigor
✔️ Improved bud development & root support
✔️ Reliable results in any grow setup

No matter where you grow… bring the heat.

#HEAVY16 #HeavyFire #GetBigGetHEAVY #IndoorGrow #OutdoorGrow
When your plants hit flower, everything matters: and HEAVY Fire delivers 🔥🌿 Designed with real plant science, Fire is a high-performance bloom stimulant that performs just as well indoors as it does outdoors. Whether you’re running a dialed-in room or growing under the sun, it adapts seamlessly to your environment. Powered by HEAVY 16’s cascading phosphorus delivery system, Fire feeds your plants at multiple stages—supporting early transition, peak bloom, and late-stage development for consistent results from start to finish. ✔️ Stronger plant performance & vigor ✔️ Improved bud development & root support ✔️ Reliable results in any grow setup No matter where you grow… bring the heat. #HEAVY16 #HeavyFire #GetBigGetHEAVY #IndoorGrow #OutdoorGrow
4 weeks ago
View on Instagram |
10/10

FIND YOUR LOCAL HEAVY 16 RETAILER

Find a retailer

QUESTIONS? COMMENTS?

Contact Us