Answer:
Sunlight is the main limiting factor, which is why trillium blooms more than tall trees.
Step-by-step explanation:
The tall trees usually shade the vegetables that are on the surface of the forest close to the ground. As a result, smaller plants suffer from a lack of sun, which is a limiting factor for plant growth.
For this reason, some species of vegetables, such as trillium, have adapted to this environment and developed a survival tactic. This tactic causes the trillium to flourish before the leaves of tall plants. In this way, trillium leaves can receive more sunlight.