Pro-Mix
PRO-MIX HP Growing Medium with Mycorrhizae
Best high-performance soil for gardeners seeking stronger roots and healthier plants.
Elevate your gardening with PRO-MIX HP Mycorrhizae Growing Mix, a high-performance, peat-based medium designed for optimal plant growth. This versatile mix is enriched with mycorrhizae to significantly enhance nutrient uptake and promote robust root development. Ideal for potting, starting seeds, and cultivating vibrant vegetable gardens and flower beds, it offers excellent aeration and moisture retention. PRO-MIX HP creates a superior environment for your plants, ensuring healthier growth and reliable results for all your gardening endeavors.
$54.99
Owner Satisfaction
4.8
/ 5
Category Rank
1
/ 1247
Best Soil
Price vs Category Average
+9%
Above average
Volume
3.8
/ cu ft
Who it's for
- Gardeners prone to overwatering or growing moisture-sensitive plants
- Plant parents seeking faster growth and stronger root systems
- Commercial growers and hobbyists requiring predictable, high-quality results
Who should skip it
- Low-maintenance growers who want a soil with built-in nutrients
- Busy gardeners unable to commit to a frequent watering schedule
- Beginners who prefer a medium that is easy to hydrate
Performance breakdown
Root Development
Mycorrhizae integration creates a robust foundation for rapid, healthy root expansion.
Aeration Quality
High-porosity structure prevents compaction and ensures consistent oxygen flow to roots.
Moisture Retention
Peat-based composition balances water storage with essential drainage for delicate seedlings.
Nutrient Uptake
Biological additives significantly improve the plant's ability to absorb vital minerals.
Versatility
Adapts seamlessly from seed starting trays to large-scale outdoor garden beds.
Consistency
Professional-grade formulation delivers uniform results across every batch of soil.
Key Specs
Volume
3.8 cu ft
Soil Type
Potting Mix, Peat Moss
Intended Use
Potting, Seed Starting, Vegetable Garden, Flower Bed
Primary Amendment
Mycorrhizae, Peat Moss
Features
- Enriched with mycorrhizae for better nutrient absorption
- High-performance peat-based growing medium
- Ideal for potting and seed starting
- Promotes optimal plant and root development
- Excellent aeration and moisture retention
- Versatile for gardens and flower beds
What customers say
PRO MIX HP is highly regarded by serious growers for its exceptional quality and consistent reliability. Users appreciate the medium's light, fluffy texture right from the bag, which offers superb drainage and aeration, effectively promoting vigorous plant health. A key feature frequently mentioned is the added Mycorrhizae, which supports robust root development and superior yields. This premium mix is trusted as a solid foundation for successful gardening projects, justifying its value through consistent performance.
Know before you buy
Mycorrhizae are beneficial fungi that form a symbiotic relationship with plant roots. They effectively extend the root system, allowing your plants to absorb more water and nutrients from the soil, which leads to stronger growth and better stress tolerance.
Yes, PRO-MIX HP is an excellent choice for seed starting. Its peat-based structure provides the consistent moisture retention and aeration necessary for delicate seedlings to establish healthy root systems early on.
While you can use it to amend your garden soil, it is primarily designed as a high-performance potting medium. For large-scale outdoor beds, it is most effective when mixed into your existing soil to improve aeration and nutrient uptake.
PRO-MIX HP is a professional-grade growing medium that focuses on structure and biological activity. You should plan to supplement with a fertilizer program tailored to the specific needs of the plants you are growing.
The 'HP' stands for High Porosity. This mix contains a higher ratio of perlite compared to standard mixes, which increases drainage and airflow to the roots, making it ideal for plants that are sensitive to overwatering or require high oxygen levels.
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