Urban landscape is one of the indicators of societal development and carries objectives such as environmental benefits, recreational use, mental health, communicative use, and more. Therefore, improving landscape plants through both theoretical and practical sciences is very important. Accordingly, the present study examined the effect of applying a magnetic field of 0.3 tesla with treatments A0 (no magnet — control), A2 (two magnets), A4 (four magnets), and A8 (eight magnets) around a 16 mm pipe with drip irrigation on seed germination and seedling emergence of Zinnia elegans. The results showed that most germination and seedling emergence indices demonstrated significant increases as magnetic strength rose. Germination criterias such as the germination speed index increased by 22% in treatment A8 compared to the control, mean daily germination increased by 90%, the germination index by 43%, germination percentage by 17%, and germination rate by more than 100% relative to the control. Seedling emergence criterias included final seedling field emergence percentage, which increased by 10% in A8 compared to the control, and mean time of Seedling field emergence, which increased by 5.2%. Given these findings, the use of magnetized water can be recommended as an effective and environmentally compatible method for increasing germination percentage and improving initial plant establishment in landscape and agriculture.