Sweet corn SUM405 is a high-yielding, simple hybrid of universal purpose, developed for cultivation in Steppe and Forest-Steppe zones. This hybrid is characterized by high productivity and optimally performs on soils with medium or high agrofond. Due to its compact form and resistance to lodging, SUM405 does not overgrow even under irrigation conditions, making it suitable for various agronomic systems. The FAO of the hybrid is 400, indicating a medium vegetation period and adaptation to specific climatic conditions. SUM405 has elite genetics and a vegetation period from 125 to 128 days. It demonstrates high resistance to major corn diseases, including common rust, leaf spot, and ear rot. Such resistance significantly reduces the risk of yield losses and reduces the need for intensive plant protection. Additionally, the hybrid shows very good resistance to shattering, which helps preserve the yield during harvest and transport. The hybrid is recommended for cultivation in all zones where the sum of active temperatures is not less than 1400 degrees Celsius. It exhibits high resistance to soil and air drought, ensuring stable yields under insufficient moisture conditions. Its versatility and high productivity make SUM405 an attractive choice for farmers seeking high-quality and stable sweet corn yields.