County Yellow lily can grow in both pots and the ground, but it may have slightly different growth patterns and requirements depending on where it is planted.
In general, growing in the ground provides more space for the plant to spread its roots and access nutrients, which can result in larger blooms and healthier plants. However, planting in pots can be useful in situations where space is limited, or if you want to move the plant around to find the ideal growing conditions.
If growing in pots, make sure to choose a container that is large enough to accommodate the plant's root system and provide adequate drainage. Additionally, fertilization and watering may need to be more frequent in pots compared to in-ground planting.
Ultimately, the choice between pot or ground planting will depend on your specific growing conditions and preferences.