Comparison: Best All Purpose Liquid Plant Fertilizer (Updated | Nov 11th)
With so many options promising lush leaves and vibrant blooms, it’s easy to feel overwhelmed. Whether you’re a seasoned grower or just starting out, finding the right formula can make all the difference—so let’s break down the favorites that actually deliver.
- Best for 50-gallon value: Purived 16oz All-Purpose Liquid Plant Fertilizer – Makes 50 Gallons
- Best for seaweed-boosted blend: GARDENWISE 10-10-10 All Purpose Plant Food – Liquid Fertilizer with Seaweed Kelp & Iron – Indoor & Outdoor Plant Food
- Best for standard 10-15-10: Schultz All Purpose Liquid Plant Food 10-15-10
- Best for organic kelp mix: Espoma Organic Grow! Liquid Concentrate Plant Food – All Purpose Fertilizer for Indoor & Outdoor Plants. for Organic Gardening. 16oz Bottle Pack of one
- Best for water-feed concentrate: Miracle-GRO 1001502 Liquid All Purpose Plant Food Concentrate
- Best for certified organic: True Organic All Purpose Liquid Plant Food – Liquid Fertilizer 16oz – CDFA
- Best for indoor concentrate: Liquid Indoor Plant Food
- Best for compact 10-15-10: Schultz SPF45160 All Purpose Liquid Plant Food 10-15-10
- Best for balanced 20-20-20: EZ-GRO 20 20 20 All Purpose Fertilizer – All Purpose Liquid Plant Food – Lawn
- Best for fish-kelp fusion: Organic All-Purpose Liquid Plant Food – Use on All Outdoor Plants: Flower Beds
Product Comparison: Best All Purpose Liquid Plant Fertilizer
Purived 16oz All-Purpose Liquid Plant Fertilizer – Makes 50 Gallons, for Indoor Houseplants, All-Natural, Groundwater Safe, Made in USA
- Best value, one bottle makes 50 gallons of nutrient rich, odorless fertilizer that feeds instantly
- Easy to use & feeds instantly. Just mix a cap full of Purived Plant Food to 1 gallon of water & feed
- All-purpose, nutrient rich formula designed to feed indoor & outdoor potted plants
- Formulated for all types of feeding methods: soil drench, foliar feed, full & semi hydroponics
- Purived Plant Food has a 2 year shelf life
GARDENWISE 10-10-10 All Purpose Plant Food – Liquid Fertilizer with Seaweed Kelp & Iron – Indoor & Outdoor Plant Food, Vegetables, Flowers, Lawn & Garden 1x8oz
- 🌱 COMPREHENSIVE PLANT NUTRITION: The 10-10-10 in our liquid plant fertilizer signifies a balanced blend of Nitrogen (N), Phosphorus (P), and Potassium (K), each contributing 10% to the total composition. Nitrogen is essential for promoting lush, vibrant foliage and overall growth, while Phosphorus is integral to root development and crucial for blooming and fruiting. Potassium, responsible for overall plant health.
- 🌟 ULTIMATE VERSATILITY AND ALL-PURPOSE FORMULA FOR EVERY GARDEN: Our 10-10-10 liquid fertilizer is meticulously balanced to suit all types of gardens, including outdoor vegetable gardens, lush lawns, indoor houseplants, decorative flowers, and resilient shrubs. Whether you’re nurturing a sprawling backyard, cultivating nutritious home-grown produce, or enhancing the vibrancy of your indoor greenery, our fertilizer meets each plant’s unique needs.
- 🌊 BOOSTED WITH SEAWEED EXTRACT: Dive into the ocean’s bounty with our fertilizer, enriched with premium seaweed extract! This natural powerhouse is brimming with micronutrients, growth hormones, and amino acids, vital for plant health. Seaweed’s unique properties accelerate growth, improve root systems, and increase yield.
- 🍃 6% CHELATED IRON FOR LUSH GREENS & CONVENIENCE: Our stable and highly absorbable form of 6% Chelated Iron not only combats chlorosis with remarkable efficiency but also ensures lush greenery across various soil pH levels. With this all-in-one solution, there’s no need for separate iron supplements. Enjoy both the convenience and cost savings, while your lawns and plants flourish with beautiful, emerald green foliage.
- 💧 EASE OF USE: Our liquid 10-10-10 fertilizer, designed for simplicity, is perfect for both indoor gardening and outdoor landscaping. Just mix with water and water as usual – even beginners can achieve professional results. Made in the USA.
Schultz All Purpose Liquid Plant Food 10-15-10, 8 oz
- For all flowers tomatoes roses vegetables fruits trees and shrubs annuals perennials and houseplants
- Model Number: SPF45170
- Country Of Origin: United States
- Item Package Weight: 14.6 oz
Espoma Organic Grow! Liquid Concentrate Plant Food – All Purpose Fertilizer for Indoor & Outdoor Plants. for Organic Gardening. 16oz Bottle Pack of one
- FOR USE ON: Use Espoma Organic Grow! for plants in the landscape or for containers both indoor and outdoor. Can be used for houseplants.
- CONTAINS: This liquid concentrate contains natural proteins that are enhanced with kelp extracts and humic acids. Fertilizer analysis is 2-2-2. No sludges or toxic ingredients.
- WHEN / HOW TO USE: Best to use Grow! every 2-4 weeks throughout the growing season. Simply mix with water as directed and water your plants.
- FOR ORGANIC GARDENING: Grow! is approved for organic gardening; It is a registered Organic Input Material meaning it meets all requirements for organic production.
- MADE IN THE USA: Product of the Espoma Company. The leader in natural organics since 1929.
Miracle-GRO 1001502 Liquid All Purpose Plant Food Concentrate, 12-4-8, 32-Ounce Bottle (2-Pack (32 Oz))
- For Houseplants or In the Garden
- Shake bottle well before each use. Measure amount based on the area of use for in the garden or houseplants. See label for full product instructions.
- Feed While Watering
- Miracle-Gro makes it easy to feed while watering. Add Miracle-Gro Liquid All Purpose Plant Food to a watering can then apply by thoroughly soaking the soil around each plant.
- For Best Results – Apply every 7-14 days for spectacular results.
True Organic All Purpose Liquid Plant Food – Liquid Fertilizer 16oz – CDFA, OMRI Listed for Organic Gardening NPK 3-2-2
- True Organic All Purpose Liquid Plant Food: Contains 16 oz. liquid fertilizer for safer edible gardening including abundant organic fruits, flowers, vegetables, herbs and foliage
- How To Use: Apply True Organic’s liquid plant food every two weeks during growing season. Our 16 fl oz bottle covers approx. 30 Sq Ft when mixed at a rate of 2 oz per gallon of water
- Made With 100% Organic and Natural Ingredients: True Organic plant fertilizers exceed industry requirements for clean sourcing and testing for pathogens and are pet friendly
- Our Specialty: We manufacture all of our products in the USA for the highest quality, ethically sourced, organic plant foods and fertilizers
- Farm To Table: Our plant fertilizers offer more farm grade, certified premium organic content than any plant food sold today to regenerate the soil and produce healthier fruits and vegetables
Liquid Indoor Plant Food, All-Purpose Indoor Plant Fertilizer, Liquid Plant Food, Easy Peasy Plants House Plant Fertilizers 4-3-4 Plant Nutrients, House Plant Food | Lasts Same as 8 oz Bottle
- Indoor plant food specifically formulated for indoor potted plants. High concentrate plant fertilizer only take 1/2 teaspoon while watering your houseplants.
- Indoor plants especially house plants deserve plant food fertilizer that delivers nutrients that matter to the health of your plants. Our high concentrate 4-3-4 lasts much longer than other product
- We use the highest quality ingredients to produce this liquid fertilizer for indoor plants. This house plant fertilizer contains a balanced 4-3-4 nutrient blend.
- Easy to use 1 teaspoon of Easy Peasy Indoor Plant Food with a minimum of 2 cups of water will provide enough house plant fertilizer for many live houseplants
- REDUCE WASTE: Easy Peasy Plants Indoor Plant Food high concentrate indoor plant food provides indoor plant fertilizer for more houseplants than any other competitor
Schultz SPF45160 All Purpose Liquid Plant Food 10-15-10, 4 oz
- Country Of Origin: United States
- Product Type : Outdoor Living
- Item Package Dimensions: 1.88″ L X 2.88″ W X 4.75″ H
- Item Package Weight: 0.25 Lb
EZ-GRO 20 20 20 All Purpose Fertilizer – All Purpose Liquid Plant Food – Lawn, Flowers, Herbs, Vegetables – Best Way to Grow Healthy Plants – Garden-Growing Miracle Nutrients – 1 Qt / 32 fl oz
- Balanced Nutrition for All Plants: Looking for a one-size-fits-all fertilizer? Our 20-20-20 formula gives your plants exactly what they need! Whether you’re growing flowers, herbs, vegetables, or even a lush lawn, this balanced blend ensures your plants grow stronger, healthier, and more vibrant.
- Fast-Acting Liquid Formula: Feed your plants quickly and easily! This liquid lawn fertilizer is designed to be absorbed fast, delivering nutrients straight to the roots. Just mix with water and apply, it’s perfect for gardeners who want visible results, whether indoors or outdoors.
- Perfect for All Garden Types: From your backyard vegetable patch to houseplants and even lawns, this all-purpose fertilizer has you covered. Its 20-20-20 fertilizer formula works for any plant, providing essential nutrients to boost growth and flowering. Simple to use, and powerful enough to support everything in your garden.
- Strengthens Root and Leaf Development: This fertilizer isn’t just for showy flowers and fruits, it strengthens root systems and encourages leafy growth, too. The Nitrogen helps lush, green leaves flourish, while Phosphorus works on root health, ensuring your plants are strong from the ground up. Use it regularly for robust, healthy plants year-round!
- Our Story: Ray DeBruhl, an agronomist and horticulturalist, founded EZ-gro after developing the first scientific agronomic program and patented greenhouse system that revolutionized an industry. His groundbreaking work in fertilizers and water quality had a global impact. With referrals from a Fortune 500 company, he sold his systems in six countries. His expertise led to EZ-gro’s consumer hydroponic products, with flagship fertilizers that simplify growing and ensure success for home gardeners.
Organic All-Purpose Liquid Plant Food – Use on All Outdoor Plants: Flower Beds, Vegetable Gardens, Container Gardening | Concentrated Liquid Fertilizer Alternative (32oz, Mixes to 32 Gallons)
- General-purpose organic plant nutrients perfect for veggies, herbs, flowers, trees, and shrubs.
- Provides a broad spectrum of essential organic nutrients including nitrogen, phosphorus, potassium, calcium, magnesium, and silica.
- Made from high-quality organic ingredients such as fish emulsion, kelp, mycorrhizae, and fish manure.
- Grows larger, healthier plants that taste and smell better.
- Made in the USA, ensuring quality and safety standards are met.
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.
Buying Guide
FAQs
What key factors should I compare when picking an all‑purpose liquid fertilizer?
Look at the N‑P‑K ratio to match your plant’s growth stage, the concentration (how much water each bottle dilutes into), and whether the formula is organic or synthetic. Also consider shelf life, added micronutrients like iron or seaweed extract, and the coverage amount per bottle, which directly affects value.
How does a synthetic blend like Gardenwise 10‑10‑10 differ from an organic option such as Espoma Grow!?
Synthetic blends typically provide a precise N‑P‑K balance and fast‑acting nutrients, while organic fertilizers release nutrients more slowly and improve soil biology. Gardenwise adds seaweed extract and chelated iron for quick greening, whereas Espoma’s 2‑2‑2 formula relies on kelp and humic acids for long‑term soil health.
Is a higher N‑P‑K ratio always better for indoor plants?
Not necessarily; indoor foliage often benefits from a balanced or slightly lower nitrogen level to avoid overly rapid, weak growth. Products like Easy Peasy Indoor Plant Food (4‑3‑4) are formulated for houseplants, providing just enough nutrients without overwhelming the roots.
Which product gives the best value per gallon of feeding solution?
Purived’s 16 oz bottle makes about 50 gallons of feed, delivering a high coverage ratio at a low cost per gallon. Compare that to concentrates like Miracle‑Gro, which require more frequent purchases, and you’ll see Purived offers the most economical option for large indoor or outdoor collections.
Do I need a separate iron supplement if I choose a fertilizer without chelated iron?
If your soil is prone to chlorosis or you have plants that show yellowing leaves, a fertilizer with chelated iron—like Gardenwise’s 6 % iron—can save you from buying an extra supplement. Otherwise, many balanced blends contain enough micronutrients to keep foliage healthy without an add‑on.
How important is shelf life when storing liquid fertilizers?
Shelf life matters because nutrients can degrade, reducing effectiveness. Purived advertises a two‑year shelf life, while some organic concentrates may have shorter windows, so check the label and store bottles in a cool, dark place to maintain potency.
Can I use the same fertilizer for both outdoor garden beds and indoor houseplants?
Yes, many all‑purpose formulas are safe for both environments, but you may need to adjust dilution rates. Indoor plants often require a weaker mix to avoid nutrient burn, whereas outdoor beds can handle a stronger concentration for robust growth.
What are the benefits of added seaweed or kelp extracts in a liquid fertilizer?
Seaweed and kelp provide natural hormones, micronutrients, and amino acids that stimulate root development and improve stress tolerance. Products like Gardenwise and Espoma include these extracts to boost overall plant vigor beyond basic N‑P‑K nutrition.