Common questions

Is MARPHYL Organic Liquid All Purpose Fertilizer – Indoor & Outdoor Plants 16.9 oz healthy?

MARPHYL Organic Liquid All Purpose Fertilizer – Indoor & Outdoor Plants 16.9 oz scores 85/100 on Scout's independent analysis of ingredients, additives, and lab results — one of the stronger scores in Scout's catalog. This product is made from marine phytoplankton, which is a natural and organic ingredient.

How processed is MARPHYL Organic Liquid All Purpose Fertilizer – Indoor & Outdoor Plants 16.9 oz?

MARPHYL Organic Liquid All Purpose Fertilizer – Indoor & Outdoor Plants 16.9 oz is NOVA Group 1: Unprocessed or Minimally Processed Foods.

Which ingredients drive MARPHYL Organic Liquid All Purpose Fertilizer – Indoor & Outdoor Plants 16.9 oz's score?

In Scout's ingredient-by-ingredient analysis, Marine Phytoplankton counts in its favor. The full breakdown, with why each one matters, is in the Key ingredients section on this page.

365 Whole Foods Market Outdoor Access Large Brown Grade A Eggs

365 Whole Foods Market

$6.99

Outdoor Access Large White Grade A Eggs

Whole Foods

Doterra - Terrashield Essential Oil Repellent Blend - Outdoor Protection Defense

DoTERRA

$21.58

See more

MARPHYL Organic Liquid All Purpose Fertilizer – Indoor & Outdoor Plants 16.9 oz

Excellent

Analysis updated June 2026 · How Scout scores

$28.90 · 33.8 oz · $0.86 / fluid ounce

Flavor Size

Flavor

Size

View on Amazon

Verified Amazon match

At a glance

Beneficial ingredients 1

Harmful ingredients 0

Category Other Home

Summary

This product is made from marine phytoplankton, which is a natural and organic ingredient. It is unprocessed or minimally processed, ensuring that it retains its natural properties without the addition of synthetic chemicals or harmful additives. The use of a single, organic ingredient contributes to its high rating for safety and environmental impact.

Key ingredients 1

Marine Phytoplankton

Good

Marine phytoplankton is a natural source of nutrients that can support healthy plant growth and overall vitality.

Processing

Group 1 · Minimally processed

Unprocessed or Minimally Processed Foods

Get the full breakdown in the Scout appTake Scout shopping

Scan any product to see lab results, healthy alternatives, and your personalized analysis.

Download on theApp Store GET IT ONGoogle Play

Amazon pricing & content

Amazon price as of Oct 10, 2026, 12:46 PM PDT. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.

CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON. THIS CONTENT IS PROVIDED “AS IS” AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.