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Is the Sierra Natural Science 203 Pesticide Concentrate right for me?

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The 203 Soil Drench/Foliar Spray is an effective, natural solution for growers looking to eliminate pests, control fungus, and promote healthy plant growth. Made from 100% pure rosemary and clove botanical extracts, this biodegradable and non-toxic formula is safe for use up to the day of harvest and around children and pets when used as directed. It effectively kills and repels root aphids, fungus gnats, whiteflies, thrips, and more, while also attacking fungus and algae, reducing pest food sources. Whether you grow in gardens, greenhouses, or hydroponic systems, this EPA-exempt, FIFRA 25(b) compliant spray is a powerful yet safe pesticide alternative.

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  • Features & Benefits
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  • Product Specifications
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  • What is included?
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  • Warranty Policy
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Sierra Natural Science 203 Pesticide Concentrate

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The 203 Soil Drench/Foliar Spray provides natural, broad-spectrum pest and fungal control, ensuring healthier plants and better yields.

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    \n
  • \n Effectively eliminates fungus gnats, root aphids, whiteflies, thrips, and more.
    • \n
  • \n Non-toxic, biodegradable, and safe for humans, pets, and the environment. \n
    • \n
  • \n Made with 100% pure rosemary and clove extracts, ensuring consistent potency.\n
    • \n
  • \n Can be used as a root drench, foliar spray, hydroponic solution, or bucket drench.\n
    • \n
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Why Choose the Sierra Natural Science 203 Pesticide Concentrate?

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If you need an effective, natural pesticide that works against common plant pests and fungal problems, 203 Soil Drench/Foliar Spray is an excellent choice. Unlike synthetic pesticides, it uses botanical extracts that are safe, environmentally friendly, and EPA-exempt. Its broad application across home gardens, hydroponics, and greenhouses makes it a versatile and essential tool for maintaining healthy, pest-free plants.

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Why Sierra Natural Science?

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Sierra Natural Science (SNS) offers eco-friendly, organic, and non-toxic solutions for pest control, plant health, and agriculture. Their products are safe for people, pets, and the environment while maintaining high effectiveness. SNS uses natural ingredients, ensuring sustainability and compliance with organic farming standards. Ideal for responsible growers!

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Why Buy From Us?

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At GreenThumbDepot, you're not just another sale to a faceless corporation. You're partnering with a team genuinely invested in your success. Our legendary customer service, combined with a promise of unbeatable prices, sets us apart. We're here for you, always.

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\"trust-pilot-logo\"
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\nExcellent 4.8 out of 5 based on 1,247 reviews\n
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\nIf I could rate 6 stars I would!
If I could rate 6 stars I would! My representative Edouard B. has been shockingly responsive! Like - oh my god - an actual SERVICE oriented company. He's dug into my odd connectivity issues I've been having - and following up in an AMAZINGLY timey manner. No shit. You'll be impressed! (And the price was also unbeatable, quick shipping...it's all PERFECT). Thank you Ed!!
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Jim D
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\nCustomer service was outstanding great…
Customer service was outstanding great people to deal with they understand your needs and they will do their best to fulfill them there is no way I can complain about them because they are the best help out there.Thanks green thumb depot. I'll definitely order from them again
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Glenn Appleton
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\nThe machine is doing just what my…
The machine is doing just what my salesman told it would do (I appreciate you Ed thank you) . The machine is what we need for our new business we're starting up, soon to be llc and licensed. We are getting a lot of clients wanting our services. Ed I will be needing more of your products, thank you again.
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Freddie
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\nFantastic
Great prices, fantastic customer service, and mind blowing shipping! Incredible. Will be using again and telling anyone in need.
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\n\"Reviewer\"\n
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Kar
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FAQ Section

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What pests does this product control? \n
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It repels and kills root aphids, fungus gnats, whiteflies, gnat larvae, thrips, and more.
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Can I use this product up until harvest? \n
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Yes! It is safe to use up to the day of harvest, with no harmful residues left behind.
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Is it safe for pets and children? \n
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Yes! When used as directed, it is non-toxic and safe around pets and children.
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Can I mix 203 Soil Drench with other products? \n
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Yes! It is compatible with SNS-209, SNS-604A, and SNS-604B for enhanced pest control.
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Where can I use this product? \n
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It is effective for home gardens, greenhouses, and hydroponic systems.
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Is this product registered with the EPA? \n
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No, it is exempt under FIFRA 25(b) and does not require EPA registration due to its natural, non-toxic ingredients.
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Is there a warranty for this product? \n
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Please check the warranty tab on this page for warranty information.
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How long will shipping take? \n
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Please check our shipping policy here for shipping information.
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What is the return policy? \n
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Please check our return policy here for return policy information.
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Specifications \"\"\n

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Sierra Natural Science 203 Pesticide Concentrate Specifications\"\"
Product Type Soil Drench & Foliar Spray
Active Ingredients Clove Oil (1.50%), Rosemary Oil (0.53%)
Other Ingredients Water, Polyglyceryl Oleate, Lactic Acid
Total Composition 100% Natural & Biodegradable
Application Methods Root drench, foliar spray, hydroponics
Toxicity Non-toxic, pet- and child-safe
Mixing Compatibility SNS-209, SNS-604A, SNS-604B
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What’s in the Box? \"\"\n

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The product Sierra Natural Science 203 Pesticide Concentrate includes

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  • \n\"\" 1 x Bottle of 203 Soil Drench/Foliar Spray \n
    • \n
  • \n\"\" Application Guide\n
    • \n
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Warranty Policy

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Please check out the manufacturers website for Warranty related issues.

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Sierra Natural Science 203 Pesticide Concentrate
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Sierra Natural Science 203 Pesticide Concentrate

Sierra Natural Science 203 Pesticide Concentrate

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Original: $24.00

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Sierra Natural Science 203 Pesticide Concentrate—

$24.00

$8.40

The Story

Nutrient

Let's Design the Right Setup Together

These systems vary by space, layout, and workflow—fill out the form below for a free expert consultation with our resident CEA expert, Elliott Gorfain.

Something went wrong. Please try again.
Note: This information is used to understand purchasing patterns and plan logistics.
✓

Thank You!

We've received your request and our resident CEA expert, Elliott Gorfain will be in touch to discuss your queries.



Is the Sierra Natural Science 203 Pesticide Concentrate right for me?

The 203 Soil Drench/Foliar Spray is an effective, natural solution for growers looking to eliminate pests, control fungus, and promote healthy plant growth. Made from 100% pure rosemary and clove botanical extracts, this biodegradable and non-toxic formula is safe for use up to the day of harvest and around children and pets when used as directed. It effectively kills and repels root aphids, fungus gnats, whiteflies, thrips, and more, while also attacking fungus and algae, reducing pest food sources. Whether you grow in gardens, greenhouses, or hydroponic systems, this EPA-exempt, FIFRA 25(b) compliant spray is a powerful yet safe pesticide alternative.

  • Features & Benefits
  • Product Specifications
  • What is included?
  • Warranty Policy

Sierra Natural Science 203 Pesticide Concentrate

The 203 Soil Drench/Foliar Spray provides natural, broad-spectrum pest and fungal control, ensuring healthier plants and better yields.

  • Effectively eliminates fungus gnats, root aphids, whiteflies, thrips, and more.
  • Non-toxic, biodegradable, and safe for humans, pets, and the environment. 
  •  Made with 100% pure rosemary and clove extracts, ensuring consistent potency.
  • Can be used as a root drench, foliar spray, hydroponic solution, or bucket drench.

Why Choose the Sierra Natural Science 203 Pesticide Concentrate?

If you need an effective, natural pesticide that works against common plant pests and fungal problems, 203 Soil Drench/Foliar Spray is an excellent choice. Unlike synthetic pesticides, it uses botanical extracts that are safe, environmentally friendly, and EPA-exempt. Its broad application across home gardens, hydroponics, and greenhouses makes it a versatile and essential tool for maintaining healthy, pest-free plants.

Why Sierra Natural Science?

Sierra Natural Science (SNS) offers eco-friendly, organic, and non-toxic solutions for pest control, plant health, and agriculture. Their products are safe for people, pets, and the environment while maintaining high effectiveness. SNS uses natural ingredients, ensuring sustainability and compliance with organic farming standards. Ideal for responsible growers!

Why Buy From Us?

At GreenThumbDepot, you're not just another sale to a faceless corporation. You're partnering with a team genuinely invested in your success. Our legendary customer service, combined with a promise of unbeatable prices, sets us apart. We're here for you, always.

Excellent 4.8 out of 5 based on 1,247 reviews
If I could rate 6 stars I would!
If I could rate 6 stars I would! My representative Edouard B. has been shockingly responsive! Like - oh my god - an actual SERVICE oriented company. He's dug into my odd connectivity issues I've been having - and following up in an AMAZINGLY timey manner. No shit. You'll be impressed! (And the price was also unbeatable, quick shipping...it's all PERFECT). Thank you Ed!!
Reviewer
Jim D

Customer service was outstanding great…
Customer service was outstanding great people to deal with they understand your needs and they will do their best to fulfill them there is no way I can complain about them because they are the best help out there.Thanks green thumb depot. I'll definitely order from them again
Reviewer
Glenn Appleton

The machine is doing just what my…
The machine is doing just what my salesman told it would do (I appreciate you Ed thank you) . The machine is what we need for our new business we're starting up, soon to be llc and licensed. We are getting a lot of clients wanting our services. Ed I will be needing more of your products, thank you again.
Reviewer
Freddie

Fantastic
Great prices, fantastic customer service, and mind blowing shipping! Incredible. Will be using again and telling anyone in need.
Reviewer
Kar

←
→

FAQ Section

What pests does this product control?
It repels and kills root aphids, fungus gnats, whiteflies, gnat larvae, thrips, and more.
Can I use this product up until harvest?
Yes! It is safe to use up to the day of harvest, with no harmful residues left behind.
Is it safe for pets and children?
Yes! When used as directed, it is non-toxic and safe around pets and children.
Can I mix 203 Soil Drench with other products?
Yes! It is compatible with SNS-209, SNS-604A, and SNS-604B for enhanced pest control.
Where can I use this product?
It is effective for home gardens, greenhouses, and hydroponic systems.
Is this product registered with the EPA?
No, it is exempt under FIFRA 25(b) and does not require EPA registration due to its natural, non-toxic ingredients.
Is there a warranty for this product?
Please check the warranty tab on this page for warranty information.
How long will shipping take?
Please check our shipping policy here for shipping information.
What is the return policy?
Please check our return policy here for return policy information.

Specifications

Sierra Natural Science 203 Pesticide Concentrate Specifications
Product Type Soil Drench & Foliar Spray
Active Ingredients Clove Oil (1.50%), Rosemary Oil (0.53%)
Other Ingredients Water, Polyglyceryl Oleate, Lactic Acid
Total Composition 100% Natural & Biodegradable
Application Methods Root drench, foliar spray, hydroponics
Toxicity Non-toxic, pet- and child-safe
Mixing Compatibility SNS-209, SNS-604A, SNS-604B

What’s in the Box?

The product Sierra Natural Science 203 Pesticide Concentrate includes

  • 1 x Bottle of 203 Soil Drench/Foliar Spray
  • Application Guide

Warranty Policy

Please check out the manufacturers website for Warranty related issues.

Sierra Natural Science 203 Pesticide Concentrate - Image 2

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

Sierra Natural Science 203 Pesticide Concentrate - Image 3

Details & Craftsmanship

Every detail has been carefully considered to bring you the perfect product.

Description

Nutrient

Let's Design the Right Setup Together

These systems vary by space, layout, and workflow—fill out the form below for a free expert consultation with our resident CEA expert, Elliott Gorfain.

Something went wrong. Please try again.
Note: This information is used to understand purchasing patterns and plan logistics.
✓

Thank You!

We've received your request and our resident CEA expert, Elliott Gorfain will be in touch to discuss your queries.



Is the Sierra Natural Science 203 Pesticide Concentrate right for me?

The 203 Soil Drench/Foliar Spray is an effective, natural solution for growers looking to eliminate pests, control fungus, and promote healthy plant growth. Made from 100% pure rosemary and clove botanical extracts, this biodegradable and non-toxic formula is safe for use up to the day of harvest and around children and pets when used as directed. It effectively kills and repels root aphids, fungus gnats, whiteflies, thrips, and more, while also attacking fungus and algae, reducing pest food sources. Whether you grow in gardens, greenhouses, or hydroponic systems, this EPA-exempt, FIFRA 25(b) compliant spray is a powerful yet safe pesticide alternative.

  • Features & Benefits
  • Product Specifications
  • What is included?
  • Warranty Policy

Sierra Natural Science 203 Pesticide Concentrate

The 203 Soil Drench/Foliar Spray provides natural, broad-spectrum pest and fungal control, ensuring healthier plants and better yields.

  • Effectively eliminates fungus gnats, root aphids, whiteflies, thrips, and more.
  • Non-toxic, biodegradable, and safe for humans, pets, and the environment. 
  •  Made with 100% pure rosemary and clove extracts, ensuring consistent potency.
  • Can be used as a root drench, foliar spray, hydroponic solution, or bucket drench.

Why Choose the Sierra Natural Science 203 Pesticide Concentrate?

If you need an effective, natural pesticide that works against common plant pests and fungal problems, 203 Soil Drench/Foliar Spray is an excellent choice. Unlike synthetic pesticides, it uses botanical extracts that are safe, environmentally friendly, and EPA-exempt. Its broad application across home gardens, hydroponics, and greenhouses makes it a versatile and essential tool for maintaining healthy, pest-free plants.

Why Sierra Natural Science?

Sierra Natural Science (SNS) offers eco-friendly, organic, and non-toxic solutions for pest control, plant health, and agriculture. Their products are safe for people, pets, and the environment while maintaining high effectiveness. SNS uses natural ingredients, ensuring sustainability and compliance with organic farming standards. Ideal for responsible growers!

Why Buy From Us?

At GreenThumbDepot, you're not just another sale to a faceless corporation. You're partnering with a team genuinely invested in your success. Our legendary customer service, combined with a promise of unbeatable prices, sets us apart. We're here for you, always.

Excellent 4.8 out of 5 based on 1,247 reviews
If I could rate 6 stars I would!
If I could rate 6 stars I would! My representative Edouard B. has been shockingly responsive! Like - oh my god - an actual SERVICE oriented company. He's dug into my odd connectivity issues I've been having - and following up in an AMAZINGLY timey manner. No shit. You'll be impressed! (And the price was also unbeatable, quick shipping...it's all PERFECT). Thank you Ed!!
Reviewer
Jim D

Customer service was outstanding great…
Customer service was outstanding great people to deal with they understand your needs and they will do their best to fulfill them there is no way I can complain about them because they are the best help out there.Thanks green thumb depot. I'll definitely order from them again
Reviewer
Glenn Appleton

The machine is doing just what my…
The machine is doing just what my salesman told it would do (I appreciate you Ed thank you) . The machine is what we need for our new business we're starting up, soon to be llc and licensed. We are getting a lot of clients wanting our services. Ed I will be needing more of your products, thank you again.
Reviewer
Freddie

Fantastic
Great prices, fantastic customer service, and mind blowing shipping! Incredible. Will be using again and telling anyone in need.
Reviewer
Kar

←
→

FAQ Section

What pests does this product control?
It repels and kills root aphids, fungus gnats, whiteflies, gnat larvae, thrips, and more.
Can I use this product up until harvest?
Yes! It is safe to use up to the day of harvest, with no harmful residues left behind.
Is it safe for pets and children?
Yes! When used as directed, it is non-toxic and safe around pets and children.
Can I mix 203 Soil Drench with other products?
Yes! It is compatible with SNS-209, SNS-604A, and SNS-604B for enhanced pest control.
Where can I use this product?
It is effective for home gardens, greenhouses, and hydroponic systems.
Is this product registered with the EPA?
No, it is exempt under FIFRA 25(b) and does not require EPA registration due to its natural, non-toxic ingredients.
Is there a warranty for this product?
Please check the warranty tab on this page for warranty information.
How long will shipping take?
Please check our shipping policy here for shipping information.
What is the return policy?
Please check our return policy here for return policy information.

Specifications

Sierra Natural Science 203 Pesticide Concentrate Specifications
Product Type Soil Drench & Foliar Spray
Active Ingredients Clove Oil (1.50%), Rosemary Oil (0.53%)
Other Ingredients Water, Polyglyceryl Oleate, Lactic Acid
Total Composition 100% Natural & Biodegradable
Application Methods Root drench, foliar spray, hydroponics
Toxicity Non-toxic, pet- and child-safe
Mixing Compatibility SNS-209, SNS-604A, SNS-604B

What’s in the Box?

The product Sierra Natural Science 203 Pesticide Concentrate includes

  • 1 x Bottle of 203 Soil Drench/Foliar Spray
  • Application Guide

Warranty Policy

Please check out the manufacturers website for Warranty related issues.

Sierra Natural Science 203 Pesticide Concentrate | Green Thumb Depot