It does not have any traits, and its ability makes a Seedling on each lane adjacent to it when it is destroyed, unless those lanes are either aquatic lanes or occupied by a non Team-Up plant.
It is based on the pomegranate (Punica granatum), a fruit-bearing deciduous shrub or small tree. It might also be based on the plant, Bombegranate in Plants vs. Zombies 2 with a similar name.
Its name is a portmanteau of "atomic bomb," referring to its bomb-like appearance, and "pomegranate," the real-life plant it is based on.
Its description references how atomic bombs work.
Statistics
Class: Kabloom
Tribe: Fruit Plant
Traits: None
Ability: When destroyed: Make next door.
Set: Event
Card description
Remember: Never ever EVER split a fruit. Oh, hold on, actually fruits are ok, just never split an atom.
Update history
Update 1.16.0
Added to the game.
Update 1.22.13
Design change: Now smaller.
Update 1.30.4
▲ Strength change: 4 → 5
Strategies
With
This plant has low stats for its cost; it does hit fairly hard, but its low health means that it will be easily destroyed. However, Atomic Bombegranate makes up for it with its ability. The Seedlings it makes can turn into very powerful plants, including legendary cards such as Brainana, Three-Headed Chomper, and Bananasaurus Rex if you get lucky. But remember that this ability is luck-based in nature, so do not expect them every time you use this plant.
The Seedling on the left will be made on a lane where combat has already occurred, allowing it nearly guaranteed survival until the next turn when it will transform. The Seedling on the right, however, will have a harder time surviving the Fight! phase, so you may want to play a Team-Up plant there first. If necessary, the Seedling on the fight can function as a shield to block one attack.
Atomic Bombegranate's downside is that unless you have Team-Up plants, it requires three empty lanes to be fully functional, which means you will either have to settle for one Seedling or less, or risk leaving three lanes open to zombie attacks. This naturally makes it hard to use it with Muscle Sprout and Astro-Shroom too, as their ability activating thrice will not compensate for the sacrifice you made to do so.
Against
Atomic Bombegranate itself is easy to destroy, as there will be many available options by turn 5. But doing so will not end the problem completely, as the Seedling made have the chance to turn into dangerous plants.
Since the Seedlings will transform right after the Fight! phase on the turn Atomic Bombegranate is destroyed, you only have the Fight! phase this turn to destroy the Seedlings before they transform. However, you will most likely be unable to destroy the Seedling on the left due to the combat order, so you should expect to face at least one surprise the next turn.
Thankfully, this outcome is avoidable if you can destroy Atomic Bombegranate (and possibly the Seedlings too) during the Zombie Tricks phase, but this is only possible if you are a Crazy, Brainy, or Beastly hero, as only these classes have access to instant-kills and damaging cards (including Total Eclipse).
Another way to deal with the Seedlings is to move this plant to the leftmost or the lane right next to the aquatic lane so that it will only make one Seedling upon destruction, making it one less Seedling to deal with before the start of next turn.
Or, you can Bounce this plant to prevent its ability from activating. Since your opponent will have left many lanes open for the future Seedlings, doing so can also potentially land lots of damage to them.
Gallery
Plants vs. Zombies Wiki has a gallery for Atomic Bombegranate.
Please note that only official translations are used.
Language
Name
Description
English
Atomic Bombegranate
Simplified Chinese
原子手雷
"Atomic Hand Grenade"
Traditional Chinese
原子爆彈
"Atomic Bomb"
Trivia
Prior to the Colossal Fossils update, it was one of the two non-legendary cards to have the legendary shine effect attached to them when they were played, the other one being Octo-Pet.
It was also the third card in the game to display the aura again, in this case, when attacking and activating its ability. The first and second were Soul Patch and Wannabe Hero (when attacking).
In promotional advertisements featuring it, it appears to have a fuse. The only other time this fuse is present is when it activates its ability and when it is played.
Kabloom class. It costs 5
to play and has 5
/2
.
next door.
Crazy, 
Brainy, or 
Beastly hero, as only these classes have access to instant-kills and damaging cards (including Total Eclipse).
English
Simplified Chinese
Kabloom
Mega-Grow
Smarty
Solar