Petrophile, commonly known as Cone Bushes, thrive in well-drained, sandy soils and require full sun exposure to flourish. These drought-resistant plants are adapted to low-water conditions, thus requiring minimal watering once established. For planting, select a sunny location, loosen the soil, and mix in well-rotted organic matter if needed. Plant at the same depth as the container and water in moderately. Mulch can help retain soil moisture. Each species within the genus may have specific needs, so it's advisable to research the particular petrophile species you are planting.