The Williames ST2500 Seeding Machine is the world’s fastest and most advanced seeding solution, engineered for high-volume, precision-driven horticultural production. Capable of processing up to 2,500 trays per hour, the ST2500 seeding machine integrates multiple robust, high-performance components into one seamless system — filling, seeding, covering, and watering trays with unmatched efficiency. Whether working with vegetable, flower, or tree seeds, this machine ensures consistent single-seed placement across all known tray types, delivering superior accuracy and uniformity at scale.
The ST2500 seeding machine combines reliability, speed, and adaptability in one compact footprint. Its modular design features a Tray De-Stacker, FNC Universal Filler with Soil Accelerator, high-speed Seeder with 5 singulator bars, V5 Vermiculite Coverer, and DC Watering Tunnel — all powered by heavy-duty motors and intelligent control systems. With low maintenance requirements and fingertip adjustment controls, the ST2500 maximizes productivity while minimizing labor and downtime, making it the ideal investment for commercial growers demanding precision and performance.
Features and Benefits of Seeding Machine ST2500
- Processes up to 2,500 trays per hour, the highest throughput in the ST range
- Accommodates all known international tray sizes
- Supports cleat-to-cleat 30-inch and optional 32-inch spacing with two trays between cleats
- Finger-tip adjustable to suit a wide range of tray widths and styles
- Handles trays up to 26 5/8 inch (680 mm) wide — the widest in the series
- Suitable for both hard plastic and polystyrene trays
- Equipped with 5 singulator bars for precise single-seed placement
- 2-minute seed changeover for fast crop transitions
- 30-second tray width switch using motorized guide rails for rapid setup changes
For Extended Life
- Stainless steel chains on filler conveyor for increased durability
- Stainless steel filler for enhanced corrosion resistance
- Stainless steel tray conveyor available for long-term use in demanding environments
For Reduced Labour
- Automatic tray destacker to minimize manual handling
- Feeding system for sown trays into racks with rack destacker and stacker for improved workflow
For Nested, Vacuum-Formed Trays
- Anti-buckling mechanism prevents tray deformation during processing
- Nesting tray destacker for efficient handling of nested trays
For Narrow, Deep-Celled Trays
- Even-filling mechanism ensures uniform soil distribution in narrow, deep trays, optimizing greenhouse space
For Fast Changeover of Trays and Seeds
- Motorized guide rails allow for tray width adjustments in under 1 minute
- Superior singulator bars enable quick switching between up to 5 tray patterns
- Insta seed change head for near-instantaneous seed transitions
- Variable multi-seed selector allows 1 to 7 seeds per cell using a single seed drum
Additional Options
- Two extra singulator bars available for added flexibility
- Watering tunnel for immediate post-seeding irrigation
SEE COMPARISON OF ALL SEEDING MACHINE MODELS: ST750, ST1000 AND ST1500