Keep the soil moist, but this is not a plant that needs monitoring for moisture. Mexican petunias grow quickly and easily in most climates, with their main requirement being warm temperatures. Get deals and low prices on mexican petunias plants at amazon This guide spills the info on sunlight, watering, soil, and even propagation methods. · this comprehensive guide will cover everything you need to know about caring for and growing mexican petunia , from soil selection and watering to pest control and disease prevention. · learn about planting, watering, pruning, and pest management to ensure vibrant blooms in your garden. With our guide , learn which types to grow and how. Use rich, well-draining soil to plant mexican petunia. They can also be overwintered in cold regions, however. · learn how to care for the mexican petunia with these tips from gardening experts. Fertilize lightly each spring if growing in a perennial zone. · learn how to grow and care for mexican petunia with our comprehensive care guide covering optimal conditions, seasonal care tips, propagation, and common issues. · mexican petunia (ruellia simplex) is a carefree flower for southern gardens that can easily become invasive. If you’re looking to add a splash of color and charm to your garden, mexican petunias (ruellia simplex) are an excellent choice. Discover how to cultivate a flourishing patch of these easy-care, heat-loving flowers that bloom all summer long. Unlock vibrant blooms with mexican petunias ! · plant in full sun for best blooms but partial shade may be fine for this flower. Transform your garden with an array of plants, seeds & flower bulbs.