Question: how many times a day should you water petunias?
Answer: Garden Beds Newly planted petunias need evenly moist soil for the first few weeks after planting, to establish a healthy root system. Once established, reduce watering to once every seven to 10 days. Provide 1 to 2 inches of water at each irrigation, which is enough water to moisten the top 6 to 8 inches of soil.