Ilex Forest in Crystal

This location contains the following Pokemon:

Grass or cave interior

Pokemon	Morning		Day		Evening
Paras	6	5%	6	5%	6	5%
Oddish					5-7	50%
Venonat					5	30%
Psyduck					7	10%
Hoothoot					7	5%
Caterpie	5	30%	5	30%
Weedle	5	30%	5	30%
Metapod	7	20%	7	20%
Kakuna	7	10%	7	10%
Pidgey	7	5%	7	5%

Surfing

Pokemon	Morning		Day		Evening
Psyduck	10-19	90%	10-19	90%	10-19	90%
Golduck	15-19	10%	15-19	10%	15-19	10%

Fishing with old rod

Pokemon	Morning		Day		Evening
Magikarp	10	85%	10	85%	10	85%
Poliwag	10	15%	10	15%	10	15%

Fishing with good rod

Pokemon	Morning		Day		Evening
Poliwag	20	65%	20	65%	20	65%
Magikarp	20	35%	20	35%	20	35%

Fishing with super rod

Pokemon	Morning		Day		Evening
Poliwag	40	80%	40	80%	40	80%
Magikarp	40	20%	40	20%	40	20%

Using Headbutt

Pokemon	Morning		Day		Evening
Hoothoot	10	62%	10	62%	10	62%
Exeggcute	10	20%	10	20%	10	20%
Ekans	10	12%	10	12%	10	12%
Pineco	10	6%	10	6%	10	6%

Through other methods

Pokemon	Morning		Day		Evening
Celebi	5	Japanese games only: Appears when the GS Ball has been received in the PCC

Items

Trainers

Bug Catcher Wayne

Ledyba	:L8
Paras	:L10

Base Money: 16

Map notes

A man looking for his Farfetch'd waits here
In the Japanese version, if the GS Ball is obtained through the PCC in the first two months after the game's release, Celebi can be caught here

Connecting locations