ICL Peters Professional General Purpose 20-20-20
Best versatile fertilizer for professional peat-based plant and nursery growers.
The Peters Professional 20-20-20 General Purpose fertilizer is a highly versatile, acidifying formula designed to maintain optimal pH in growing media, particularly those containing mineral soil. This 100% water-soluble fertilizer acts as a pure base formulation, suitable for standalone use or rotation with other components. It excels in various water types (2, 3, and 4) and is specifically developed for peat-based cultures like pot plants, bedding plants, and container nursery stock. Its exclusive M-77 chelating formula ensures rapid and efficient nutrient uptake, delivering essential NPK, magnesium, and micronutrients.
$49.10
Owner Satisfaction
4.7
/ 5
Category Rank
50
/ 4425
#50 in Fertilizers
Price vs Category Average
-20%
Below average
Fertilizer Grade
202020
/ --
Who it's for
- Commercial growers needing clog-free, fast-acting liquid application
- Gardeners managing diverse plant collections with one simple solution
- Plant enthusiasts seeking to prevent common nutrient deficiencies
Who should skip it
- Specialized growers targeting specific flowering or rooting results
- Budget-conscious hobbyists preferring affordable, entry-level options
- Busy gardeners wanting low-maintenance, slow-release feeding schedules
Performance breakdown
Nutrient Bioavailability
M-77 chelation technology ensures rapid absorption for immediate plant response.
Solubility Efficiency
Fully water-soluble powder prevents clogging in delicate irrigation systems.
pH Balancing
Acidifying formula actively stabilizes growing media for healthier root development.
Application Versatility
Adapts seamlessly to drip, drench, or foliar feeding methods.
Formula Purity
Clean, ballast-free composition minimizes salt buildup in container substrates.
Water Compatibility
Reliable performance across varying water qualities and mineral profiles.
Key Specs
Fertilizer Grade
20-20-20
Package Weight
25 lb
Solubility
100% water soluble
UPC
32247910101
SKU
PR200
Model Number
G99292
Contains
NPK, magnesium and micronutrients
Application Methods
Drip, drench, or foliar feed
Features
- Acidifying action helps control pH.
- Use alone or with other components.
- Effective in multiple water types.
- Fast nutrient uptake with M-77 chelation.
- Pure formulation, no ballast substances.
- Ideal for peat-based growing systems.
- Available in a no-dye option.
What customers say
Customers overwhelmingly trust Peters Professional 20 20 20 for its exceptional quality and reliable performance. Reviewers consistently highlight the dramatic improvement in plant health and growth, noting that this professional grade formula delivers results far superior to standard retail fertilizers. The product’s high concentration means a little goes a long way, making it an excellent long term value despite the premium price point. Users appreciate the ease of mixing and application, confirming its status as a foundational nutrient source for serious gardeners and hobbyists alike.
Know before you buy
This ratio indicates a balanced blend of 20% nitrogen, 20% phosphorus, and 20% potassium. It provides an equal distribution of primary nutrients, making it a reliable, all-purpose choice for general growth across a wide variety of plants.
Yes, this is a versatile formula suitable for houseplants, vegetables, flowers, and nursery stock. It is specifically optimized for peat-based growing media and container plants.
The M-77 formula is designed to improve the efficiency of nutrient uptake. By chelating the micronutrients, it ensures that your plants can absorb the minerals more rapidly and effectively, even in varying water conditions.
Yes, because it is 100% water-soluble and contains no ballast substances, it dissolves completely without clogging drip lines or irrigation equipment.
Yes, it has an acidifying effect that helps maintain an optimal pH level in your growing media. This is particularly beneficial for soil-based mixes that may otherwise become too alkaline over time.
You can apply this fertilizer through drip irrigation, as a soil drench, or as a foliar feed. Its high solubility makes it flexible enough to fit into most standard liquid feeding programs.
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