FoxFarm Grow Big, gal.
Best liquid fertilizer for gardeners seeking vigorous early vegetative growth.
Fuel your garden's early stages with FoxFarm Grow Big, a potent liquid concentrate fertilizer designed to promote lush vegetative growth. This special brew enhances plant size and structure, laying the groundwork for abundant fruit, flower, and bud development. Its low pH formulation ensures stability and maximizes micronutrient availability. Ideal for promoting vigorous early development in lawns, vegetable gardens, indoor plants, roses, and trees.
$108.49
Owner Satisfaction
4.6
/ 5
Category Rank
1928
/ 4348
#1928 in Fertilizers
Price vs Category Average
+76%
Above average
Fertilizer Form
Liquid Concentrate
/ Liquid Concentrate
Who it's for
- Beginners looking for reliable, widely supported feeding schedules
- Gardeners seeking fast, lush foliage and strong stem development
- Plant parents wanting a complete, nutrient-dense feeding solution
Who should skip it
- Novice growers worried about potential nutrient burn or salt buildup
- Budget-conscious gardeners avoiding multi-stage, expensive feeding systems
- Organic purists requiring 100% certified natural inputs
Performance breakdown
Vegetative Growth Power
Delivers aggressive, lush foliage development during critical early growth stages.
Nutrient Bioavailability
Low pH formulation ensures plants absorb essential micronutrients with maximum efficiency.
Mixing Convenience
Liquid concentrate format allows for quick, mess-free preparation in watering cans.
Application Versatility
Highly effective across a diverse range of indoor and outdoor plants.
Structural Support
Builds robust plant architecture to support future heavy blooms and yields.
Release Speed
Quick-release minerals provide an immediate nutritional boost for hungry young plants.
Key Specs
Fertilizer Form
Liquid Concentrate
Fertilizer Source
Mineral Based
Release Type
Quick Release
Container Weight
9.7 lbs
Package Size
1 Gallon
Target Plant Type
Lawn, Vegetables, Flowers, Trees and Shrubs, Houseplants
Season of Application
Spring, Summer
Water Soluble
false
Features
- Promotes lush vegetative growth
- Enhances plant size and structure
- Liquid concentrate for easy mixing
- Low pH for nutrient stability
- Maximizes micronutrient availability
- Supports abundant fruit and flower development
- Ideal for early growth stages
- Suitable for various plant types
What customers say
FoxFarm Grow Big earns high marks for its undeniable effectiveness and straightforward application. Consumers consistently report seeing rapid, vigorous vegetative growth, noting that plants develop lush foliage and robust structure almost immediately upon use. This reliability, coupled with clear dosing instructions, makes it an essential, easy to use nutrient solution trusted by both new and seasoned gardeners looking for dependable results.
Know before you buy
Grow Big is specifically formulated for the early vegetative stage. It is designed to build strong plant structure and lush foliage before the plant transitions into the flowering or fruiting phase.
Yes, it is suitable for houseplants. Because it is a potent liquid concentrate, be sure to follow the dilution instructions carefully to avoid over-fertilizing your indoor plants.
No, FoxFarm Grow Big is a mineral-based, quick-release fertilizer and is not certified organic.
The low pH helps maintain nutrient stability in the solution, which prevents nutrients from locking out. This ensures that your plants can effectively absorb the micronutrients provided in the formula.
As a liquid concentrate, it must be mixed with water according to the label directions before application. It is not intended to be applied directly to the soil in its concentrated form.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$108