PGX – plug and germination

Balance and precision are essential in horticulture, even more so at the beginning of a crop. PRO-MIX PGX is formulated with vermiculite for increased buffering capacity and nutrient retention at the early stages of plant growth. This carefully developed formulation optimizes plant growth by creating a root zone environment that is well adapted for plug production and seed germination applications.

Where to find our products

Usage Guidance


  • Vegetable transplants
  • Plug & Germination
  • Young plant propagation


  • Easy filling of plug trays
  • Require less frequent watering than peat/perlite plug mixes
  • Contains slightly higher fertilizer than PRO-MIX® FPX for growers wanting high fertilizer content
  • Seedling rootball holds together better at transplanting than peat/perlite germination mixes


  • VeriFlora® is an agricultural sustainability certification and eco-labeling program recognized as the gold-standard in the floriculture and horticulture industries.
Troy Buechel Horticulture Specialist

Advice from our specialist

Premier Tech Horticulture offers two products: PRO-MIX FPX, which contains perlite for extra drainage, and PRO-MIX PGX, which contains vermiculite for more water retention.  When using these products, remember to start fertilizing after the emergence of the first true leaves. For the best root development, cut back waterings once seedling roots go to the sides of the container. Allow the surface to dry down between waterings, which will encourage the development of an extensive, deep-rooted root system.

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Training center


  • SPHAGNUM PEAT MOSS (75-85%) ?

    Canadian Sphagnum peat moss is a natural, organic matter that comes from a peat bog. This primary resource is carefully harvested by vacuum harvesters. Peat moss comes in various fibrosity and levels of decomposition. Once carefully graded, peat moss assures that qualities of each grade are optimized for based on grower and uses for a final product reaching high quality requirements.


    Vermiculite is an expanded aluminum-iron, magnesium silicate mineral ore that is mined throughout the world. Vermiculite has a high total-porosity and has good nutrient-holding ability.


    Used to adjust pH to optimum range. Also a source of Calcium and Magnesium.


    A wetting agent is a substance that reduces the surface tension of water, allowing water to penetrate and uniformly wet growing media.

Documents and specifications

Code Size (Regional availability may vary) Units per pallet Weight
30280RG 2.8 cu ft Loose 57 25 - 35 lb
30380RG 3.8 cu ft Comp. 30 60 - 75 lb
Size (Regional availability may vary) 2.8 cu ft Loose
Units per pallet 57
Weight 25 - 35 lb
Size (Regional availability may vary) 3.8 cu ft Comp.
Units per pallet 30
Weight 60 - 75 lb

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