Silcoon is a Bug-type Pokémon introduced in Generation III and a middle stage of its evolution line, with a base stat total of 205.

Silcoon

Silcoon

Abilities

Shed Skin

Heals the body by shedding.

Base Stats

Total: 205
EV Yield: 2 Defense
HP: 50
Attack: 35
Defense: 55
Sp. Atk: 25
Sp. Def: 25
Speed: 15

Silcoon's Weaknesses and Resistances

Evolution Chain

Wurmple can evolve into Silcoon at level 7 or Cascoon at level 7. Silcoon evolves into Beautifly at level 10. Cascoon evolves into Dustox at level 10.

#0265 Wurmple Wurmple bug type
Lvl. upat level 7
#0266 Silcoon Silcoon bug type
Lvl. upat level 10
#0267 Beautifly Beautifly bug typeflying type
Lvl. upat level 7
#0268 Cascoon Cascoon bug type
Lvl. upat level 10
#0269 Dustox Dustox bug typepoison type

Silcoon Playthrough, Competitive, and Nuzlocke Usage

Using Silcoon in a Playthrough

Wurmple is an extremely early-evolving Bug Pokemon whose hidden personality value determines whether it becomes Silcoon or Cascoon at level 7; the player cannot reliably predict or control the branch by appearance, nature, or ordinary gameplay choices. Silcoon evolves into Beautifly at level 10, producing a Bug/Flying special attacker, while Cascoon becomes Bug/Poison Dustox at the same level and develops into the more defensive and status-oriented branch. The line's greatest playthrough advantage is timing: obtaining a fully evolved Pokemon around level 10 can be genuinely useful during the earliest part of Hoenn even though both final forms have low overall base-stat totals and tend to fall behind stronger Pokemon later. Beautifly offers stronger Special Attack - 90 in Generations III through V and 100 from Generation VI onward - and early Flying or Bug offense, whereas Dustox provides better defensive stats and access to tools such as status, Moonlight, Protect, or later Quiver Dance depending on game. Both final forms have significant weaknesses, especially Beautifly's quadruple Rock weakness, so the family is best viewed as an early-game power spike rather than a line expected to dominate an entire playthrough.

Silcoon in Competitive Pokémon

Neither Beautifly nor Dustox has developed a substantial high-level competitive career because both suffer from very low base-stat totals, awkward defensive profiles, and competition from stronger Bug-types. Beautifly's later base 100 Special Attack and access to Quiver Dance give it a recognizable sweeping concept, but base 65 Speed, poor 60/50/50 bulk, and a quadruple Stealth Rock weakness make setup extremely difficult; modern Smogon analyses have described it as outclassed even in low tiers. Dustox trades offensive power for better defenses and has experimented with Quiver Dance, Roost or Moonlight, Toxic, and other utility, but its extremely low offensive stats and Stealth Rock vulnerability make it passive and easy to pressure. The cocoon stages have essentially no conventional competitive role beyond very specialized challenge formats. The family's main competitive significance is therefore structural rather than metagame-defining: it offers two different fully evolved Pokemon at an exceptionally low evolution level, but neither final form has the stats needed to translate that early-game advantage into serious long-term competitive success.

Silcoon in Nuzlockes

Wurmple is an appealing Nuzlocke encounter because it reaches a fully evolved form at level 10, giving the player a major statistical advantage during some of the earliest routes and trainer battles. The uncontrollable evolution branch is the main planning complication: the same captured Wurmple may become either Beautifly or Dustox, so a team cannot safely assume which role it will receive until level 7. Beautifly offers better immediate damage and a Ground immunity but is physically frail and catastrophically weak to Rock, while Dustox generally has a larger defensive margin and can exploit Poison typing and status but ends battles more slowly. Both branches decline as enemy levels and base stats increase, and keeping an early-route Bug in dangerous late-game matchups simply because it was valuable early can create unnecessary risk. In a Nuzlocke, the line is most valuable when allowed to do what early bugs do best: provide immediate power and utility, then either transition into a specialized support role or retire before its weaknesses become costly.

Learnsets

3 moves · Legends Arceus

Level Up — Legends Arceus

- Iron Defense steel type --- --- status move
1 Poison Sting poison type 15 100 physical move
6 Tackle normal type 40 100 physical move

Pokédex Entries

11 entries
Ruby

SILCOON tethers itself to a tree branch using silk to keep from falling. There, this POKéMON hangs quietly while it awaits evolution. It peers out of the silk cocoon through a small hole.

Sapphire

SILCOON was thought to endure hunger and not consume anything before its evolution. However, it is now thought that this POKéMON slakes its thirst by drinking rainwater that collects on its silk.

Emerald

It prepares for evolution using the energy it stored while it was a WURMPLE. It keeps watch over the surroundings with its two eyes.

Firered / Leafgreen

It conserves its energy by moving as little as possible. It awaits evolution while drinking only a little rainwater.

Diamond

It anchors itself by wrapping twigs with the silk from its body. It motionlessly awaits evolution.

Pearl / Y

It drinks dew that collects on its silk and waits for evolution. Its hard cocoon repels attacks.

Platinum / Black / White / Black 2 / White 2 / X

It wraps silk around the branches of a tree. It drinks rainwater on its silk while awaiting evolution.

Heartgold / Soulsilver

Having wrapped silk around the branches of a tree, it quiescently awaits evolution.

Omega Ruby

Silcoon tethers itself to a tree branch using silk to keep from falling. There, this Pokémon hangs quietly while it awaits evolution. It peers out of the silk cocoon through a small hole.

Alpha Sapphire

Silcoon was thought to endure hunger and not consume anything before its evolution. However, it is now thought that this Pokémon slakes its thirst by drinking rainwater that collects on its silk.

Legends Arceus

Wraps itself in thin strings of silk while it stores energy for evolution. It can't extend its limbs and its movement is slow, but its eyes keep a sharp lookout—Silcoon is always on guard.

Where To Find Silcoon

20 locations
Petalburg Woods · HoennWalking · version details vary

Petalburg Woods

Emerald max 10%
Walking · Lv. 5 · 10%
Ruby max 10%
Walking · Lv. 5 · 10%
Sapphire max 10%
Walking · Lv. 5 · 10%
National Park · JohtoWalking · version details vary

National Park

HeartGold max 10%
Walking · Lv. 24–36 · 10% · Bug Catching Contest Yes, Story Progress National Dex, Weekday Thursday
SoulSilver max 10%
Walking · Lv. 24–36 · 10% · Bug Catching Contest Yes, Story Progress National Dex, Weekday Thursday
Eterna Forest · SinnohHoney Tree, Walking · version details vary

Eterna Forest

Diamond max 40%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group AWalking · Lv. 10 · 20% · Swarm No
Platinum max 5%
Walking · Lv. 12 · 5%
Floaroma Meadow · SinnohHoney Tree · version details vary

Floaroma Meadow

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A
Fuego Ironworks · SinnohHoney Tree · version details vary

Fuego Ironworks

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A
Route 205 · SinnohHoney Tree, Walking · version details vary

Road 205 (east, towards Eterna City)

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A
Platinum max 10%
Walking · Lv. 14 · 10% · Radar Off

Road 205 (south, towards Floaroma Town)

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A
Route 206 · SinnohHoney Tree · version details vary

Road 206

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A
Route 207 · SinnohHoney Tree · version details vary

Road 207

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A
Route 208 · SinnohHoney Tree · version details vary

Road 208

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A
Route 209 · SinnohHoney Tree · version details vary

Road 209

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A
Route 210 · SinnohHoney Tree · version details vary

Road 210 (south, towards Solaceon Town)

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A

Road 210 (west, towards Celestic Town)

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A
Route 211 · SinnohHoney Tree · version details vary

Road 211 (east, towards Celestic Town)

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A
Route 212 · SinnohHoney Tree · version details vary

Road 212 (east, towards Pastoria City)

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A

Road 212 (north, towards Hearthome City)

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A
Route 213 · SinnohHoney Tree · version details vary

Road 213

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A
Route 214 · SinnohHoney Tree · version details vary

Road 214

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A
Route 215 · SinnohHoney Tree · version details vary

Road 215

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A
Route 218 · SinnohHoney Tree · version details vary

Road 218

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A
Route 221 · SinnohHoney Tree · version details vary

Road 221

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A
Route 222 · SinnohHoney Tree · version details vary

Road 222

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A
Valley Windworks · SinnohHoney Tree · version details vary

Valley Windworks

Diamond max 20%
Honey Tree · Lv. 5–15 · 20% · Honey Tree Group A

Additional Images

PokeAPI sprites

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Silcoon Biology and Behavior

Silcoon attaches itself to tree branches with silk and encloses nearly its entire body inside a hard white cocoon that can repel attacks while the Pokemon remains vulnerable and nearly immobile. Rather than actively feeding, it conserves energy accumulated during the Wurmple stage while dew and rainwater collect on the outer silk and provide additional nourishment. Its limbs cannot extend normally from the cocoon, leaving movement extremely slow, but the exposed eyes remain alert for approaching danger. This stage is therefore a period of energy conservation and watchfulness rather than true unconscious dormancy.

Silcoon Biological Data

National Pokédex
#266
Species
Cocoon Pokémon
Height
2' 0" (0.6 m)
Weight
22.0 lbs (10.0 kg)
Habitat
Forest
Color
White
Body Style
Ball
Gender
50% female / 50% male

Misc

Catch Rate: 120

Base Experience: 72 Exp

Hatch Counter: 15

Silcoon Size Comparison: BETA

Silcoon is listed at 2' 0" (0.6 m); this chart uses a pose-adjusted visual scale.

7 ft6 ft5 ft4 ft3 ft2 ft1 ft0 ft
silcoon
Professor Oak
How is visual size determined?

Pokédex height is treated as the official listed measurement, but the chart uses pose-aware visual scaling so each sprite looks reasonable in a direct comparison.

For long or coiled Pokémon, the listed height may represent total body length rather than upright height. For Pokémon with floppy ears, leaves, feathers, antennae, wings, or other flexible features, the chart usually measures to the top of the solid, substantial part of the head or body instead of the tallest decorative feature.

The goal is not to replace the official height, but to make the artwork compare naturally at the size it appears to occupy.

Silcoon currently uses a pose-adjusted visual scale.