繁茂

1. Origins, structure, and basic meaning

• Structure: 繁茂 (はんも) is a literary term for vegetation growing densely and luxuriantly. The examples use progressive and past forms.
• Basic usage: Aquatic plants are presently thick around a pond; shrubs flourished on a sunny slope.

2. Common pitfalls and similar expressions

• Aquatic growth continuing and shrubs that have flourished
  • The plant subjects are 水草が and 低木が. している presents a current condition; した presents the attained growth.