Comparison: Best General Purpose Liquid Feed (Updated | Nov 11th)
With so many options on the shelf, how do you know which one truly delivers? We’ve done the digging, tested the top contenders, and compared key factors like nutrient balance, ease of use, and value for money. Let’s break down the best picks so you can feed with confidence and watch your garden thrive.
GrowMaxx Instant Feed 2 Pack Liquid Fertilizer (2 Liter) | Feeds Instantly! All-Purpose
Nano Absorption Boost
- Best for powdered npk power: Jack’s Professional 20-20-20 General Purpose Water-Soluble Fertilizer with Micronutrients for Heavy Feeding Plants in Continuous Liquid Feed Programs
- Best for ready-to-feed liquid: Miracle-Gro Pour & Feed Plant Food (Liquid)
- Best for root boost solution: Clonex Clone Solution
- Best for universal liquid concentrate: M’iracle~GRO Liquid All Purpose Plant Food Concentrate
- Best for nano absorption boost: GrowMaxx Instant Feed 2 Pack Liquid Fertilizer (2 Liter) | Feeds Instantly! All-Purpose
- Best for nano growth formula: GrowMaxx Instant Feed Liquid Fertilizer (2 Liter) | Feeds Instantly! All-Purpose
- Best for precise syringe pack: Extend Lab 10ml Plastic Syringes – Pack of 5 – Luer Slip Tip
Product Comparison: Best General Purpose Liquid Feed
Jack’s Professional 20-20-20 General Purpose Water-Soluble Fertilizer with Micronutrients for Heavy Feeding Plants in Continuous Liquid Feed Programs, 25lbs
- 20-20-20 Analysis – Great for providing fast green-up and rapid leaf expansion in all outdoor grown plants.
- Water-Soluble Powder – Powdered concentrates go further than liquid fertilizers. Simply mix your measured powder with water and you are ready to feed with multiple gallons of liquid fertilizer!
- Micronutrients – Added micronutrients supply your plant with the nutrition it needs for optimal growth and health. Unlike other fertilizers, additional feeding is not required.
- Continuous Liquid Feed Program – Intended for use with hydroponic systems. Mixing instructions by volume included.
- Fertilizer appearance may vary in color due to variation in raw material size and tracer dye distribution upon the particles in the bag.
Miracle-Gro Pour & Feed Plant Food (Liquid), 32 fl. oz (Pack of 2)
- The information below is per-pack only
- Ready-to-use plant food, no mixing required
- No mixing with water – simply apply directly to the soil
- Instantly feeds all potted plants
- Feed every 1-2 weeks
- For indoor and outdoor container plants
Clonex Clone Solution, Professional-Grade Nutrient Formula for Seedlings, Cuttings, and General Use. Feeds Young Plants, Helps Promote Growth & Rapid Root Development – 1 Gallon
- CUTTING, SEEDLING AND GENERAL USE NUTRIENT: Specifically formulated to promote root development and new growth in cuttings, seedlings and young plants.
- SUPPORTS ROOT DEVELOPMENT: Contains all the essential nutrients to support root development and robust growth.
- VERSATILE APPLICATION: Can be used as a medium soak or root feed at first sign of root development through beginning stages of plant growth.
- WORKS WITH CLONEX PRODUCTS: Designed for best results when used with Clonex Rooting Gel and Clonex Mist, but compatible with other rooting products.
M’iracle~GRO Liquid All Purpose Plant Food Concentrate, Feeds All Indoor & Outdoor Plants – 32 oz (Pack of 1)
- Instantly feeds all types of plants for fast, visible results
- Easy-to-use liquid concentrate—just mix with water in a watering can
- Suitable for all plant types: flowers, vegetables, herbs, shrubs, trees, and houseplants
- For in-ground use: mix capful to 1st line with 2 gallons of water to feed 20 sq. ft.; apply every 7–14 days
- For container plants: mix 1 teaspoon per gallon of water and apply every 2 weeks
GrowMaxx Instant Feed 2 Pack Liquid Fertilizer (2 Liter) | Feeds Instantly! All-Purpose, Indoor, Oudoor Plant Food | Essential Macro & Micronutrients for Plant Health
- Specially formulated, all-purpose N-P-K plant feed concentrate with 10 plant essential macro and micronutrients – the ultimate nutrient rich plant energy drink
- Easy-to Use! Direct Feed – Simply apply the formula directly to the soil, or mix it with water. Use every other watering.
- Instant absorption! Specially formulated nano sized macro and micro nutrients result in immediate plant cell absorption.
- Increases plant growth, flower and fruit yield, improves photosynthetic functionality, enzyme production, deeper greening, better growth, higher yield and extended lifetime for your plants.
- Suitable for all types of feeding methods: soil drench, foliar feed, full & semi hydroponics
GrowMaxx Instant Feed Liquid Fertilizer (2 Liter) | Feeds Instantly! All-Purpose, Indoor, Oudoor Plant Food | Essential Macro & Micronutrients for Plant Health
- Specially formulated, all-purpose N-P-K plant feed concentrate with 10 plant essential macro and micronutrients – the ultimate nutrient rich plant energy drink
- Easy-to Use! Direct Feed – Simply apply the formula directly to the soil, or mix it with water. Use every other watering.
- Instant absorption! Specially formulated nano sized macro and micro nutrients result in immediate plant cell absorption.
- Increases plant growth, flower and fruit yield, improves photosynthetic functionality, enzyme production, deeper greening, better growth, higher yield and extended lifetime for your plants.
- Suitable for all types of feeding methods: soil drench, foliar feed, full & semi hydroponics
Extend Lab 10ml Plastic Syringes – Pack of 5 – Luer Slip Tip, No Needle – Individually Sealed Measuring Syringes for Liquids, Lab Use, Pet Feeding, and Refills
- ✅ Pack of 5 Syringes (10ml Each) – Includes five individually sealed, disposable plastic syringes. Needle-free for safe, versatile use.
- ✅ Multipurpose Use – Ideal for lab work, pet feeding, essential oils, lip gloss filling, lubricants, sealants, and more.
- ✅ Food-Grade & Safe – Made from BPA-free, transparent polyethylene. Sterile and individually packaged for hygiene and safety.
- ✅ Accurate Measurement – Features clear 1ml increment markings for precise liquid measurement and control.
- ✅ Customer Satisfaction Guaranteed – Backed by Extend Lab’s quality commitment and responsive customer support.
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 are the main differences between powder and liquid fertilizers for home gardening?
Powder fertilizers, like Jack’s Professional 20-20-20, require mixing with water but often stretch further because you control the dilution. Liquid concentrates, such as Miracle‑Gro Pour & Feed or GrowMaxx Instant Feed, are ready‑to‑use or need minimal mixing, offering quicker application. Powder may be more cost‑effective for large volumes, while liquids provide convenience and faster nutrient uptake.
Which product is best suited for indoor houseplants and why?
M’iracle~GRO Liquid All Purpose Plant Food Concentrate is formulated for indoor use, with clear mixing ratios for containers and easy application via a watering can. Its balanced nutrients support a wide range of houseplants, from herbs to foliage. The liquid form also reduces the risk of over‑fertilizing, which is important in confined indoor environments.
How does the nutrient profile of Jack’s Professional 20‑20‑20 compare to GrowMaxx Instant Feed?
Jack’s Professional offers a classic 20‑20‑20 N‑P‑K ratio with added micronutrients, ideal for rapid leaf expansion and overall vigor. GrowMaxx Instant Feed provides a proprietary blend of macro and micronutrients in nano‑sized particles for immediate absorption, though its exact N‑P‑K ratio isn’t disclosed. Both are all‑purpose, but Jack’s gives a transparent ratio, while GrowMaxx focuses on enhanced uptake efficiency.
Is there a cost advantage to buying a multi‑pack like Miracle‑Gro Pour & Feed (2 × 32 fl oz) versus a single larger bottle?
Buying the two‑pack often reduces the per‑ounce price compared with single‑bottle purchases, delivering better value for frequent feeders. Since Miracle‑Gro is ready‑to‑use, you also save time and avoid the extra cost of mixing equipment. However, if you have a large garden, a bulk liquid concentrate like GrowMaxx may ultimately be cheaper per application.
Can Clonex Clone Solution be used as a regular fertilizer for mature plants?
Clonex Clone Solution is specifically formulated to promote root development in cuttings, seedlings, and young plants, with a nutrient balance optimized for early growth stages. While it can provide some benefits to mature plants, it lacks the broader nutrient spectrum of all‑purpose feeds like Jack’s or GrowMaxx. For established plants, an all‑purpose fertilizer will deliver more balanced nutrition.
What should I consider about application frequency when choosing between these fertilizers?
Ready‑to‑use products like Miracle‑Gro Pour & Feed recommend feeding every 1‑2 weeks, while concentrates such as GrowMaxx suggest applying every other watering or 7‑14 days. Powder fertilizers like Jack’s require you to set a schedule based on your mixing ratio, often every 2‑3 weeks. Match the frequency to your watering routine to avoid over‑fertilizing and ensure consistent growth.
How do the micronutrient contents affect plant health across these products?
Micronutrients, present in Jack’s Professional and GrowMaxx Instant Feed, support enzymatic functions, disease resistance, and overall vigor, especially in nutrient‑deficient soils. Miracle‑Gro Pour & Feed and M’iracle~GRO focus on macronutrients with limited micronutrient claims, which may require supplemental feeding for optimal health. Choosing a product with a robust micronutrient profile can reduce the need for additional supplements.
Is there any advantage to using a syringe set like Extend Lab 10 ml syringes for fertilizer application?
Syringes provide precise dosing for concentrated feeds, allowing you to apply exact amounts to small containers or seedlings without waste. They are especially useful with high‑strength liquids like GrowMaxx or Clonex, where over‑application can damage plants. While not required for most garden tasks, they add control for targeted feeding and experimental mixes.