The first step toward creating a fibrous root system is RootMaker® propagation containers. RootMaker® Trays come in 18, 32, 60 and 105-Cell Trays. The 18 and 32-cell are also available as perforated pull apart trays. The 18, 32, 60 and 105-Cell RootMakers® fit a standard 10 X 20 mesh bottom, open-sided flat.
RootMaker® Express™ 18
The RootMaker® Express™ 18 (25 cu. in.) is an injection-molded new and improved single. Our Shuttle™ Tray neatly holds 18 of the Express™ 18’s or the 18-cell pull apart singles for sorting, grafting, and grading. RootMaker® works most efficiently using a wire bench or other support at least 18 to 24″ above the floor to allow good air circulation and thus efficient air-root-pruning on all sides of the container, not just the bottom.
Ingredients for Success
RootMaker® propagation containers can be filled with a mix of peat and perlite 40/60 or peat, perlite, and vermiculite 40/40/20, or pine bark, peat, and perlite at 50/30/20 by volume. Add 4 – 6 pounds of RootMaker® RM6 Fertilizer with Minors per cubic yard of mix.
Additional Branching
RootMakers® are specifically designed to guide roots toward openings in the container, with the tap root typically reaching an opening first. As the tap root encounters a bottom opening, its tip dehydrates, naturally halting its downward growth. This triggers the formation of secondary roots that grow horizontally. These secondary roots then reach side openings, where their tips also dehydrate, encouraging even more branching. This process produces a dense, well-branched root system that supports healthier, more vigorous plant growth.
Time for a Bigger Pot
Once a fibrous root system has been established, it’s time to transition the plant to a larger container. Leaving plants in RootMakers® too long can reduce their benefits, as the high concentration of roots may make water management challenging. Regularly monitor your plants’ progress to determine the ideal timing for transplanting. Typically, plants remain in RootMaker® propagation containers for 2 to 4 months, although this duration can vary depending on plant species and growth conditions.