Which is NOT a characteristic of oxalis?

Oxalis, commonly known as wood sorrel, encompasses a variety of species with distinct characteristics. The correct choice indicating a non-characteristic is that they are biennial. Most oxalis species are actually perennial, meaning they live for more than two years. This allows them to grow and thrive in their environments over time, developing a robust root system that can sustain them through various seasonal changes.

Oxalis often has leaves that resemble clover and can display a low-growing habit, making them suitable for ground cover in gardens. Many varieties are well-known for their bright yellow flowers, which can add vibrant color to landscapes. Additionally, oxalis is popular as an ornamental plant due to its attractive foliage and flowers, making it a favored choice for gardeners looking for attractive and easy-to-maintain plants.

Understanding these characteristics helps to clarify why biennial growth is not a typical trait associated with oxalis.