Growit Perlite 4cft
Best soil amendment for gardeners seeking improved drainage and root aeration.
Enhance your gardening with GROW!T #4 Perlite, a versatile and inert growing medium designed to improve soil structure and aeration. This 4 cubic foot bag contains coarse granules perfect for container gardening, seed starting, and propagation. It offers enhanced drainage, is completely sterile, odorless, and lightweight, with a neutral pH of around 7.0. This perlite is an excellent amendment for breaking up heavy soils or can be used as a standalone hydroponic medium, providing superior aeration and drainage for healthier plant growth.
$52.66
Owner Satisfaction
4.6
/ 5
Category Rank
516
/ 1247
#516 in Soil
Price vs Category Average
+4%
Above average
Volume
4
/ cubic feet
Who it's for
- Gardeners managing diverse setups from hydroponics to traditional potting
- Plant parents struggling with overwatering and root rot issues
- Budget-conscious growers tackling large-scale garden beds or container projects
Who should skip it
- Safety-conscious users sensitive to airborne dust particles
- Precision gardeners frustrated by material migration during heavy watering
- Urban gardeners working with limited storage or small spaces
Performance breakdown
Aeration capacity
Coarse #4 grade ensures maximum oxygen flow to delicate root systems.
Drainage efficiency
Prevents waterlogging by creating essential pathways for excess moisture to escape.
Soil structural integrity
Effectively prevents compaction in heavy potting mixes for better root penetration.
Hydroponic versatility
Inert composition makes it a reliable medium for various hydroponic setups.
Purity and sterility
Completely sterile processing eliminates risk of soil-borne pathogens or unwanted pests.
Value density
Generous four cubic foot volume provides significant coverage for large projects.
Key Specs
Volume
4 cubic feet
Grade
#4 Perlite
Granule Size
1/3" - 3/4" granules
pH
Neutral, around 7.0
Sterility
Completely sterile
Intended Use
Potting, Seed Starting
Soil Type
Potting Mix
Drainage Level
Fast Draining
Features
- Improves soil aeration and drainage
- Sterile, odorless, and lightweight
- Neutral pH for plant health
- Versatile for potting and hydroponics
- Aids in breaking up heavy soils
- Coarse granules for optimal structure
- Sustainable sourcing
- 15% more perlite per bag
What customers say
Customers consistently praise the exceptional value offered by the large 4 cubic foot bag, making it an economical choice for serious gardeners and commercial growers. The quality of the perlite itself is highly regarded for its effectiveness in improving soil aeration and drainage. Users note that the material is generally clean and performs reliably, leading to healthier plants and successful propagation efforts. This product is seen as a dependable staple for amending potting mixes, delivering performance that justifies the bulk purchase.
Know before you buy
This grade features coarse granules ranging from 1/3 inch to 3/4 inch in size. This larger texture is specifically designed to maximize airflow and drainage in your potting mixes.
Yes, because it is inert and sterile, it works well as a standalone medium for hydroponics. Its coarse structure provides excellent support for root systems while maintaining high oxygen levels.
No, this perlite has a neutral pH of approximately 7.0. It is chemically inert and will not alter the acidity or alkalinity of your existing soil mix.
A common starting point is to mix 20% to 30% perlite into your potting soil. You can increase this ratio if you are working with heavy, clay-based soils that require faster drainage.
Yes, it is completely sterile and free of pathogens, making it a safe choice for seed starting. Its lightweight nature also helps prevent soil compaction, allowing delicate roots to grow more easily.
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$53