Jumpluff is a round, blue plant Pokémon with red, pupilless, beady eyes, two small, round feet, and a tail. Three cotton puffs, almost as large as the body itself, extend off it: one on each arm, and one on top of its head. These puffs produce cotton spores that Jumpluff can use to float in the air, and it can control its flight even in a hurricane. Three to four leaves grow at the base of the top puff.
Jumpluff drifts on seasonal winds and can use its spores to masterfully maneuver itself around the globe. It will spread cotton spores as it floats around to create offspring; inhaling these spores may cause coughs and itchiness. It descends if it encounters cold air currents while it is floating. Though it spends a good amount of time in the air, it is commonly sighted above open temperate grasslands. Once Jumpluff runs out of its cotton spores, its journey — and its life — reaches its end.
In An Egg-Sighting Adventure!, Officer Jenny used a Jumpluff to dust for footprints left by the criminals who supposedly stole Ash's Egg.
In Hatch Me If You Can, multiple Jumpluff attacked Team Rocket during their attempt to steal Ash's Larvitar. Their actions motivated Larvitar into using Screech and Hidden Power to send Team Rocket blasting off.
Ramos's Jumpluff appeared in Thawing an Icy Panic! and The Green, Green Grass Types of Home!. In the latter, he used Jumpluff in a Gym battle against Ash. Jumpluff battled Fletchinder but was soon defeated.
Jumpluff debuted in Celebi: The Voice of the Forest.
In Bulbasaur... the Ambassador!, multiple Jumpluff were among the feuding Pokémon at Professor Oak's Laboratory.
In I Politoed Ya So!, Tammy uses three Jumpluff in her cheerleading squad.
In Fangs for Nothin', multiple Jumpluff lived on the Dragon Holy Land.
In Showdown at the Oak Corral and Journey to the Starting Line!, multiple Jumpluff were living at Professor Oak's Laboratory appeared.
In Gonna Rule The School!, the Pokémon Trainers' School lent a Hoppip to the school's underage students for use in lessons.
In Grass Hysteria!, multiple Jumpluff were living in the Forbidden Forest.
In Hokey Poké Balls!, a Jumpluff was at Professor Oak's Laboratory.
In That's Just Swellow, a Jumpluff competed in the Crossgate PokéRinger.
In Who's Flying Now?, a Jumpluff was featured in the Fortree City Feather Festival.
In The Saffron Con, a Coordinator's Jumpluff was kidnapped by Team Rocket.
In Off the Unbeaten Path, a Trainer's Jumpluff participated in the Pokémon Orienteering competition.
A Trainer's Jumpluff appeared in Curbing the Crimson Tide!.
A Jumpluff appeared in Giratina and the Sky Warrior.
In Dressed for Jess Success!, a Coordinator's Jumpluff competed in the Lilypad Contest.
In An Old Family Blend!, a Trainer's Jumpluff competed in the Lily of the Valley Conference.
Multiple Jumpluff appeared in Zoroark: Master of Illusions.
A Jumpluff appeared in A Blustery Santalune Gym Battle!.
Multiple Jumpluff appeared in the opening sequence of Diancie and the Cocoon of Destruction.
Multiple Jumpluff appeared in Thawing an Icy Panic!, with one under the ownership of a Trainer and the others being residents of Ramos's ranch. The Trainer's Jumpluff reappeared in Under the Pledging Tree!, where it was among the Pokémon present during the Coumarine City Festival.
A Trainer's Jumpluff appeared in Forming a More Perfect Union!.
Multiple Jumpluff appeared in The Power of Us, with three each under the ownership of different Trainers, one being wild, and the others appearing during a flashback.
Three Jumpluff appeared in a flashback in Time After Time!.
In Narrowing the Chaser Chase!, multiple Jumpluff were used as part of a Project Mew Trial Mission at Sea Mauville.
||Jumpluff, the Cottonweed Pokémon. Jumpluff catches seasonal winds to spread its cotton-like spores and make offspring.
||Jumpluff, the Cottonweed Pokémon. Jumpluff drifts around the world with the seasonal winds. It releases cottony spores as it travels.
In The Show, a Jumpluff briefly appeared under the ownership of a Trainer in Ecruteak City.
- At 6.6 lbs. (3 kg), Jumpluff is the lightest Pokémon that has undergone two evolutions.
- In Pokémon Colosseum, the shadows of Jumpluff's spores are square. In addition, the spores are always facing the same way relative to the camera, and as such, the player is only able to see one side of them. This was fixed in Pokémon XD.
- The English names of Jumpluff and its pre-evolved forms were partially coined by Nob Ogasawara.
Jumpluff appears to be based on the final stage in the life-cycle of a dandelion. Its two hands closely resemble pom-poms, and its movements in the console games, such as Pokémon Stadium 2 and Pokémon Colosseum, also bring to mind a cheerleader.
Jumpluff may be a combination of jump, fluff, and possibly plush. The names of all stages of its evolutionary line is based on the phrase: "Just a hop, skip, and a jump away."
Watacco may be a combination of 綿 wata (cotton) and 根っ子 nekko (root).