1. Soil: the requirement of Petunia rotundifolia on soil is not strict. It can survive on all kinds of soil.
2. Water content: it has no high requirement for water content. It only needs to follow the principle of "no drying, no watering, no watering", so that the soil can be kept slightly wet.
3. Light: it likes sunshine. Except for shade when it is just transplanted, it can receive full day light at other times.
4. Fertilization: fertilizer mainly consists of nitrogen fertilizer and potassium fertilizer, supplemented by phosphorus fertilizer. When applying, pay attention to apply thin fertilizer frequently.
Petunia rotundifolia mainly propagates by sowing, and can be sown all year round. Before sowing, prepare the substrate, and then sprinkle the seeds, without covering the soil, germinate after a period of time.