How should the length of polyfoil for pot trimming be determined?

The optimal length of polyfoil for pot trimming should be determined by the size of the plant. This is because the primary function of the polyfoil is to provide a supportive structure that accommodates the growth and development of the plant. The size of the plant dictates how much polyfoil is needed to properly support it, ensuring that adequate space is provided for the plant’s root system while also maintaining a neat appearance.

Additionally, using the size of the plant as a guideline helps to ensure that the trimming not only fits perfectly around the pot but also allows for the foliage to flourish without restrictions. Other factors, such as the size of the pot, type of soil, or climate, might influence overall planting decisions but do not specifically address how length should be measured for the polyfoil itself. Hence, focusing on the plant size is the most logical approach.