Step 1 Every feeding
Mix your solution
GroMax and RootMax
2 mL per 1 L of water, for each product you use
- Always use non-chlorinated water
- Mix fresh each time
- Leaf spray = GroMax only. Soil drench = RootMax only. Soil prep = both.
Leaves · foliar spray · 16 fl oz
GroMax
Nano-nutrient leaf spray that feeds your plants from above, absorbed straight through the leaf.
- Free shipping on every order
- 30-day money-back guarantee
- USDA Certified Biobased (BioPreferred)
- Secure checkout · Shop Pay
- Feeds through the leaves: light morning or evening mist
- Pairs with RootMax (roots) for the full system
- Works in soil, coco and hydro
What's inside
GroMax 16 fl oz: nano-nutrient leaf spray. Feeds the plant above the soil.
RootMax 16 fl oz: nano-nutrient root drench. Builds the root zone below.
FREE 8 oz Nano Odor Max ($12.99 value), added to your cart automatically with the bundle.
Ingredients & safety
Organic plant extracts reduced to nano-particle size, so they pass through the leaf's stomata and reach leaf, stalk and root directly.
USDA Certified Biobased Product (BioPreferred). Non-toxic and biodegradable.
How to use
Mix 2 mL per 1 L of non-chlorinated water, fresh each time. GroMax = leaf spray. RootMax = soil drench. Both together = soil prep before planting. Alternate every 5–7 days.
Shipping & returns
Free shipping on every order. No minimum.
30-day money-back guarantee. Not happy with your results? Contact us within 30 days for a full refund.
Why you need both
Leaves above. Roots below. One system.
A plant feeds in two places. GroMax feeds the leaves from above; RootMax builds the roots below. Tap the plant to see how they work together.
GroMax · leaves
GroMax feeds the leaves, above the soil
A nano-nutrient leaf spray. Nano-sized organic extracts pass through the leaf's stomata, so the plant takes them in where it builds new growth.
Leaf spray · 2 mL per 1 L · light mist, morning or evening
RootMax · roots
RootMax builds the roots, below the soil
A nano-nutrient root drench. It goes straight to the root zone for a stronger, denser root system that can take up more.
Soil drench · 2 mL per 1 L · ~8 oz (237 mL) per plant
Both · soil prep
Before planting, use both
About 9 days and again 5 days before planting, drench the soil with GroMax and RootMax together.
Soil prep · 2 mL GroMax + 2 mL RootMax per 1 L
Together vs alone
| Feature | GroMaxalone | RootMaxalone | Bothbundle |
|---|---|---|---|
| Feeds the leaves (above) | Yes | No | Yes |
| Builds the roots (below) | No | Yes | Yes |
| Soil prep before planting | No | No | Yes |
| FREE 8 oz Odor Max ($12.99 value) | No | No | Yes |
| Price | $54.99 | $54.99 | $99.99 |
Bought separately: $109.98. The bundle saves $9.99 and adds a free Odor Max.
Get both $99.99
FREE 8 oz Odor Max · Free shipping · 30-day money-back guarantee
What each one is built for
RootMax · roots
GroMax · leaves
Illustrative images, not customer results.
How to use Grow Max
Seven simple steps, seed to harvest
Mix 2 mL per 1 L of non-chlorinated water, fresh each time. Then follow the routine.
GroMax is for leavesRootMax is for rootsBoth is for soil prep
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Step 2 ~9 & ~5 days before planting
Prep the soil with both
GroMax and RootMax
2 mL GroMax + 2 mL RootMax per 1 L
- ~9 days before planting: drench the soil with both
- ~5 days before planting: drench again
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Step 3 Once a few leaves appear
First leaf spray
GroMax · leaf spray
2 mL GroMax per 1 L
- Lightly coat the leaves (don't soak)
- Spray in the morning or evening
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Step 4 Every 5–7 days, alternating
Repeat the routine
GroMax alternating with RootMax
2 mL per 1 L, one product at a time
- Spray GroMax on the leaves, then wait 5–7 days
- Drench the soil with RootMax, then wait 5–7 days
- Repeat: keep alternating every 5–7 days
GroMaxleaf spray Wait5–7 days RootMaxsoil drench Wait5–7 days -
Step 5 Each feeding
How much to use
~8 oz (237 mL) of solution per plant
- Pour it around the roots
- For 5 plants: ~40 oz total per feeding
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Step 6 Flowering stage
Flowering: roots only
RootMax · soil drench
2 mL RootMax per 1 L
- Stop spraying leaves (avoid damaging buds)
- Only use RootMax in the soil
- Continue root drenches
-
Step 7 ~2 weeks before harvest
Finish clean
Stop all use ~2 weeks before harvest
- No more sprays or drenches from here
- Harvest when ready
1 / 7
Dose calculator
- Total solution per feeding
- 1.19 L≈ 40 fl oz
- Non-chlorinated water
- 1.19 L
- GroMax
- 2.4 mL0.08 fl oz
- RootMax
- 2.4 mL0.08 fl oz
Same strength: 2 mL GroMax per 1 L. A leaf spray only needs enough to lightly coat the leaves (don't soak), so mix just what you'll use.
About 8 oz (237 mL) of solution per plant, poured around the roots. 5 plants ≈ 40 oz per feeding.
About 9 days and again 5 days before planting: drench the soil with GroMax and RootMax mixed together.
Quick rules
- GroMax = spray the leaves
- RootMax = feed the roots
- Alternate every 5–7 days
- Spray only when it's cool (morning or evening)
- Non-chlorinated water, mixed fresh each time
- Stop all use ~2 weeks before harvest
Watch: the full routine in 15 seconds
The research
Measured in trials, not in marketing
Matched control groups, same conditions, one variable. Here is what changed.
Indoor trial · 49 days
+40.7%
more yield
18 treated vs 18 control plants, same room and conditions, one variable. 27 lbs → 38 lbs.
Outdoor trial · 115 days
+17.5%
more yield
28 treated vs 28 control plants over a full outdoor season. 47.5 lbs → 55.8 lbs.
Tomato field trial · Philippines
+51%
more tomatoes per hectare
Field trial: 35 → 53 tons per hectare, a gain of 18 tons.
Global field trials · soybean & rice
21.1%–125%
yield increase across trials
Field trials across multiple crops and regions. Treated yields up to 4.5 tons per hectare vs up to 2 for control.
I fully support NanoGrow Max and believe in the very promising future it holds for our company—and for the future of agriculture.
Results observed after a single growing cycle: up to 2× higher yields under identical conditions, stronger root systems with increased plant mass, and increased resistance to powdery mildew.
We wholeheartedly recommend NanoGrow Max—the remarkable results from our field trials clearly demonstrate its efficacy.
Field trials conducted across multiple agricultural zones in Nigeria showed consistent yield improvements and improved crop resilience under challenging climate conditions.
See the full research
Results from controlled and field trials as reported by the growers and partners named. Individual results vary with crop, conditions and care.
See the difference
Drag to compare.
What the numbers look like in a garden.
Illustration of typical results. See the study numbers above.
How we compare
Grow Max vs conventional nutrients.
Every nutrient brand claims better yields. Most are selling the same salt-based chemistry that has been around for decades. This is different.
| Feature | OursGrow Max | Salt-based nutes | Organic teas | Cal-Mag supplements |
|---|---|---|---|---|
| Nano-encapsulated delivery | Yes | No | No | No |
| USDA Certified Biobased (BioPreferred) | Yes | No | Varies | No |
| Documented yield increase | Yes | No | No | No |
| Works in soil, coco and hydro | Yes | Yes | Soil only | Yes |
| Non-toxic and biodegradable | Yes | No | Yes | Varies |
| Up to 100x absorption vs conventional | Yes | No | No | No |
Trusted by growers nationwide
Real growers. Real results.
Stronger plants and bigger yields with Grow Max. Clean air with Odor Max.
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Grow Max customer
“The difference was obvious in the first week. Healthier plants, faster growth, and way more flower. Worth every penny.”
Jessica T. Oregon Verified purchase
How much do I mix?
2 mL per 1 L of non-chlorinated water for each product you use. Mix fresh each time. For soil prep before planting, mix both together: 2 mL GroMax + 2 mL RootMax per 1 L.
Can I use tap water?
Always use non-chlorinated water.
When do I use GroMax and when do I use RootMax?
GroMax is the leaf spray. RootMax is the soil drench. Before planting, drench the soil with both together. After that, alternate: GroMax spray, wait 5–7 days, RootMax drench, wait 5–7 days, repeat.
How much solution per plant?
Drench about 8 oz (237 mL) per plant around the roots. For 5 plants, that's about 40 oz per feeding.
What changes when my plants flower?
Stop spraying the leaves and continue with RootMax soil drenches only.
When do I stop?
Stop all use about 2 weeks before harvest.
Get started today
Feed the plant. Dominate the harvest.
The Grow Max Bundle: GroMax for the leaves, RootMax for the roots, and a FREE 8 oz Nano Odor Max in every box.