Accurate prediction of time from planting to harvest is critically important for baby spinach production. This project examined the relationship between planting date and the time required for babyleaf spinach to reach commercial maturity. Data was collected from Gympie in QLD, Camden and Cowra in NSW, and Boisdale and Maffra in VIC to create a reliable harvest and sowing prediction model. This model enables growers and processors to estimate the time required for babyleaf spinach to reach commercial maturity throughout different growing seasons and across different locations.