11/4/2025

Notes

11/4/2025 1 Applied botany: providing roots space to grow • In most plants, there is a balance between the size of the root and shoot systems. • Not necessarily 1 to 1. Frequently closer to 5 to 1 shoot vs roots. Applied botany: providing roots space to grow • The shoot system growth may be limited when there is no space for the roots to grow. • Why do you think that is? • Re-potting plants when their roots get too big allows them to continue growing. • Another consequence: uprooting a large tree is much harder than it might seem at first. 11/4/2025 2 CHAPTER 26: SECONDARY GROWTH OF STEMS Plants classified depending on the time needed to complete their life cycle • Annuals → complete the life cycle within one growing season → many weeds, wildflowers, garden flowers, and vegetables. The seed bridges the gap between growing seasons. • Biennials → complete the life cycle in two growing seasons. 11/4/2025 3 Plants classified depending on the time needed to complete their life cycle • Perennials → the vegetative structures live year after year. • Perennials might be evergreen (maintain live leaves year-round), or deciduous (lose all leaves at the same time and replace them the next grow...