From Bulbapedia, the community-driven Pokémon encyclopedia.

Sprout Tower (Japanese: マダツボミのとう Madatsubomi Tower) is a pagoda in Violet City in Johto. It is inhabited by monks who teach that all living beings coexist through cooperation. These monks train Bellsprout, and occasionally Hoothoot.

As trainers battle, the flexible pagoda shakes from side to side. This flexibility protects the tall tower from earthquakes. This technology is now known as 柔構造 jūkōzō, and applied to hundreds of modern high-rise buildings. Legend has it that a 100 foot Bellsprout was used to make the swaying pillar.

As night falls, ghosts are said to appear in the tower, in the form of Gastly.

The design of Sprout Tower is inspired by Buddhist temples in the Nara Prefecture of Japan, such as Kofukuji and Horyuji temples.

Trainers

Sage Nico

• Bellsprout level 3
• Bellsprout level 3
• Bellsprout level 3

Sage Chow

• Bellsprout level 3
• Bellsprout level 3
• Bellsprout level 3

Sage Edmond

• Bellsprout level 3
• Bellsprout level 3
• Bellsprout level 3

Sage Jin

• Bellsprout level 6

Sage Neal

• Bellsprout level 6

Sage Troy

• Bellsprout level 7
• Hoothoot level 7

Sage Li

• Bellsprout level 7
• Hoothoot level 10
• Bellsprout level 7

After defeating Sage Li, players receive HM05 (Flash).

Pokémon

Name	Games			Location	Levels	Rate
Morning and Day
Rattata	G	S	C	2F, 3F	3-6	100%
Night
Rattata	G	S	C	2F, 3F	3-5	15%
Gastly	G	S	C	2F, 3F	3-6	85%