In which stage do erect shoots begin to form from the crown of grass?

The tillering stage is when grass plants begin to produce additional shoots from the crown, which are known as tillers. This is a crucial growth period in the life cycle of grasses. During this stage, the plant focuses on increasing its biomass and overall density, which enables it to better compete for resources such as water, nutrients, and light. The formation of erect shoots enhances the grass's ability to capture more sunlight, contributing to photosynthesis and, ultimately, growth and development.

In contrast, other stages like the rosette stage are characterized more by the plant's earlier growth forms, focusing on leaf development close to the ground. The summer annuals refer to plants that complete their life cycle within one growing season but do not specifically address the development of erect shoots. The jointing stage occurs later in the growth process, where upward stem elongation happens but is reliant on the earlier formation of tillers.