The agriculture sector is one of the most important sectors supporting the Gross National Product of many countries throughout globe. Improving the agricultural productivity with minimal natural resources is the possible solution to mitigate the worldwide food shortage. This paper discusses a new useful agricultural method by using electromagnetic fields to improve the seed germination and crop yields. Also, this study explored the possible impacts of LEDs with different colours to enhance seed germination. These applications may also have had a positive effect on increasing crop production in the longer term. This research focuses in studying the impact of electromagnetic field, red and blue LEDs on cucumber and marigold plants and analysing the plants after the application of these electromagnetic field treatments. The EM field was produced using RF transmitter of 2.4 GHz with horn antenna to expose the experiment plants to the maximum in order to get the best possible outcome.