Tomato plants (Allium ascalonicum L.) are horticultural vegetable plants that are included in the eggplant group. Tomato plants are very much needed in the community because tomatoes are one of the most important vegetable ingredients in several types of vegetables. This study observed the growth of tomato plants under the influence of POC treatment of Rice Water and Coffee Grounds Waste. The method used in this study was a non-factorial Randomized Block Design (RAK) with three replications to see how the POC of rice washing water and coffee grounds waste affected the growth of tomato plants ( Allium ascalonicum L. ). With three types of treatment concentrations 0 (control), 100, 200ml POC and 0 (control), 75g, and 150g coffee grounds waste. The results of this research show that plants with a dose of 200ml POC have a high growth rate compared to other doses. With the same plant age, plant stem height occurred at a dose of 200ml, while the lowest number of leaves occurred at a dose of 0. This study found that administering a 200ml POC dose at 3MST showed a significant dose level, compared to other dose treatments. The results of this research show that a dose of 200ml POC of rice washing water is very suitable for the growth process of tomato plants, and the findings of this research can be used as a condition for getting tomato plant growth results.