Short answer: A greenhouse packhouse should be sized from peak harvest flow, product, packaging, quality checks, cooling method, storage time, dispatch schedule, food-safety workflow and future expansion. Place it close enough to reduce crop travel while keeping vehicle, waste and worker routes controlled.
Map every step from harvest container to customer dispatch: receiving, weighing, inspection, washing if used, drying, grading, packing, labeling, cooling, storage, order assembly and loading. Different crops need different handling. The buyer should use qualified postharvest and food-safety advice rather than assume one process for tomatoes, leafy greens, strawberries and seedlings.
Use the busiest harvest day and expected arrival pattern. Record crates or kilograms per hour, number of grades, pack formats, shift length, order cut-off and storage duration. Equipment and aisle capacity should prevent produce from waiting in sun, rain or uncontrolled conditions. Include space for rejected product and rework.
| Flow | Planning question |
|---|---|
| Incoming produce | Where are field containers received, inspected and returned for cleaning? |
| Packed product | How does finished product reach cooling and dispatch without crossing waste? |
| Workers | Where do staff enter, change, wash hands and move between hygiene zones? |
| Packaging | How are clean cartons, trays, labels and pallets stored and issued? |
| Waste | How are crop waste, wastewater and rejected packaging removed? |
Possible areas include covered receiving, raw-product holding, grading and packing lines, packaging storage, finished-goods staging, cold rooms, quality-control space, cleaning chemical storage, staff hygiene facilities, offices, waste holding and loading. Not every project needs every room, but responsibilities and interfaces should be explicit.
Cold-room size and temperature strategy depend on crop, incoming product temperature, daily throughput, target pull-down time, storage duration, door openings, packaging and outdoor conditions. A refrigeration specialist should calculate heat loads and select equipment. Define backup power, alarms, drainage, floor insulation, door protection and maintenance access.
If the process uses wash water or ice, confirm water quality and local food-safety requirements. Floors should be cleanable, slip-resistant and graded to suitable drains without standing water. Separate process wastewater, sanitary drainage and stormwater. Keep electrical equipment protected from washdown and leaks.
Plan vehicle turning, dock or floor-loading method, weather protection, pallet movement and order staging. Keep diesel exhaust and outside dust away from clean product areas. Confirm whether refrigerated vehicles, local trucks or containers will be used and how product temperature is maintained during loading.
Crop, pack formats and customer specification
Peak hourly and daily harvest volume
Process steps and hygiene-zone requirements
Cooling method, storage duration and dispatch frequency
Water, drainage, electricity and backup information
Packaging, pallet and vehicle dimensions
Building, refrigeration and equipment supply boundaries
Future expansion and local regulatory review
Size it from peak product flow, process steps, equipment, hygiene zones, storage, dispatch and expansion rather than greenhouse area alone.
No. The need depends on crop, market distance, harvest timing, customer requirements and the chosen cold-chain plan.
The scope must be defined; refrigeration load and local compliance should be verified by qualified specialists.
Balance short crop travel with drainage, utilities, vehicle access, hygiene, waste routes and future expansion.
Use the feasibility checklist, operating-cost guide and drainage checklist.
Send the crop, peak harvest, pack format, cooling and dispatch information through the contact page for a packhouse input checklist.