This innovative equipment and process of screening Sphagnum peat moss, along with a precise blend of coir (horticultural grade), perlite, limestone, wetting agent, soluble starter nutrient and active ingredients are used in formulating the PRO-MIX germination and young plant production growing media: PRO-MIX FPX and PRO-MIX FPO (for organic production). The industrial division of Premier Tech, Premier Tech Systems and Automation, has developed an improved screening system to process Canadian Sphagnum peat moss with minimal fine peat-moss particles that is virtually stick-free. The challenge is to screen out this debris while retaining the fiber of the peat moss to have a well-structured growing medium. It is a challenge for peat moss producers to remove all sticks and small tree roots from Sphagnum peat moss because they are found naturally. Most growers prefer a fibrous growing medium that has good air porosity. Clean product works better with automated machinery and there are fewer worries about bridging small cells with plug trays.
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With these types of pots, the growing medium must be free of sticks to avoid tearing the wrapping or damaging the saw blades that cut each pot. Source: Premier Tech Machinery That Requires a Growing Medium Free of Sticks Rosemary cuttings rooted in 25 mm paper-wrapped cells. There are different needs for growing media for each of these applications. Larger sizes are used for the propagation of greenhouse foliage, woody ornamentals for nurseries, and ready-plant annuals for the landscape trade. The smaller size paper-wrapped pots (15-35 mm) are used mostly for cutting propagation. They are made by extruding the growing medium into a ‘tube-shaped’ outer wrapper and gluing the seam inside the wrapped tube. When the medium “tube” is filled, the paper-wrapped tube is cut into a specific length to form paper pots that are placed into individual cells within a growing tray. They represent an interesting practice for organic cultivation as some of these paper-wrapped pots are 100% bio-degradable.
These miniature pots are available in assorted diameters, ranging from 15 mm up to 120 mm (5/8” – 4.75”). Characteristics of Paper-Wrapped Pots for Propagating Cuttings Several companies have developed machinery to wrap paper and other materials around growing media to form small pots. While young plants are still produced with seed germination and plugs systems, the propagated and rooted cutting market has evolved into new processes with specialized equipment. This has become popular for specialty varieties and branded plants. Over the last several years, many producers have moved from seed germination to cutting propagation. Young plant production continues to be a growing segment of the horticulture industry. Back Finding the Right Growing Medium to Propagate Plant Cuttings
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