FoxFarm Grow Big Liquid Fertilizer
Best liquid nutrient for gardeners seeking vigorous vegetative growth.
Fuel vigorous vegetative growth with FoxFarm Grow Big Liquid Fertilizer. This concentrate is engineered to enhance plant size and structure, laying the groundwork for abundant flowering and fruiting. Its carefully balanced, low-pH formula ensures nutrient availability, promoting lush growth and robust development. Ideal for lawns, vegetable gardens, indoor plants, roses, and trees, it's an excellent choice for starting your garden strong and maintaining healthy plant development throughout the growing season.
$17.99
Owner Satisfaction
4.7
/ 5
Category Rank
50
/ 4348
#50 in Fertilizers
Price vs Category Average
-71%
Below average
Guaranteed Analysis
644
/ --
Who it's for
- Gardeners seeking fast, lush foliage during the vegetative stage
- Plant owners wanting a complete, nutrient-rich feeding solution
- Growers managing both soil and hydroponic cultivation setups
Who should skip it
- Indoor gardeners sensitive to strong, pungent organic odors
- Beginners prone to over-fertilizing or miscalculating dilution ratios
- Budget-conscious growers avoiding complex, multi-bottle feeding schedules
Performance breakdown
Vegetative Growth Power
The 6-4-4 NPK ratio drives rapid, lush foliage development.
Nutrient Bioavailability
Low-pH formula ensures plants absorb essential minerals with maximum efficiency.
Application Versatility
Works effectively across diverse species from houseplants to outdoor vegetable patches.
Concentrate Potency
Highly concentrated liquid requires minimal volume for significant feeding results.
Structural Support
Builds strong stems and root systems for future flowering stages.
Ease of Mixing
Liquid form dissolves instantly in water for hassle-free irrigation preparation.
Key Specs
Guaranteed Analysis
6-4-4
Nitrogen
6%
Phosphorus
4%
Potassium
4%
Form
Liquid Concentrate
pH
Low
Release Type
Quick Release
Target Plant Types
Lawn, Vegetables, Flowers, Trees and Shrubs, Houseplants
Features
- Promotes lush vegetative growth
- Enhances plant size and structure
- Supports abundant fruit and flower development
- Ensures micro-nutrient availability
- Low pH for stability
- Liquid concentrate formula
- Quick release nutrients
- Suitable for various plant types
What customers say
Customers consistently praise FoxFarm Grow Big for its exceptional quality and visible effectiveness. Gardeners report rapid, lush vegetative growth, often calling it a game changer for their plants. The primary appeal lies in its reliable performance and straightforward application, making it highly accessible even for novice growers. Users appreciate that the fertilizer delivers powerful results without requiring complex mixing schedules. This product is widely viewed as a worthwhile investment that reliably boosts plant health and yield.
Know before you buy
The 6-4-4 ratio indicates a balanced blend of nitrogen, phosphorus, and potassium, with a slightly higher emphasis on nitrogen. This composition is specifically designed to support vigorous leaf and stem development during the vegetative stage of growth.
Yes, it is suitable for indoor plants. Because it is a liquid concentrate, ensure you dilute it according to the instructions on the label to avoid over-fertilizing your container plants.
A low-pH formula helps keep micro-nutrients stable and readily available for your plants to absorb. This ensures that the nutrients don't get 'locked out' in the soil, allowing for more efficient uptake.
Grow Big is a quick-release fertilizer, meaning it provides nutrients almost immediately. You should follow the feeding schedule on the bottle, which typically involves regular applications during the active vegetative growth phase.
Yes, it is perfectly safe for vegetable gardens. It is formulated to build the plant structure necessary to support heavy fruit and flower production later in the season.
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$18