There exist several boosts which were meant to be obtained via the Zen Garden, but ultimately the idea was canned and only First Strike was used.
Bounty Hunter
Increases the chance of a plant to make zombies drop coins.
[BOOST_COMBAT_BOUNTY_HUNTER]
Defeated zombies drop coins
[BOOST_DETAIL_BOUNTY_HUNTER]
Zombies defeated by this plant drop coins. This boost lasts for 1 level.
[BOOST_TITLE_BOUNTY_HUNTER]
Bounty Hunter
Extra Toughness
Increases the health of a plant being boosted.
[BOOST_COMBAT_EXTRA_TOUGH]
Extra protection against attacks
[BOOST_DETAIL_EXTRA_TOUGH]
Extra protection from zombies. This boost lasts for 1 level.
[BOOST_TITLE_EXTRA_TOUGH]
Extra Toughness
Fast Recharge
Decreases the recharge speed of a plant being boosted.
[BOOST_COMBAT_FAST_RECHARGE]
Recharges faster
[BOOST_DETAIL_FAST_RECHARGE]
Recharges more quickly. This boost lasts for 1 level.
[BOOST_TITLE_FAST_RECHARGE]
Fast Recharge
Rapid Fire
Increases the attack speed of a plant being boosted.
[BOOST_DETAIL_RAPID_FIRE]
Attacks at a faster rate. This boost lasts for 1 level.
[BOOST_COMBAT_RAPID_FIRE]
Faster attack rate
[BOOST_TITLE_RAPID_FIRE]
Rapid Fire
Sun Discount
Decreases the sun cost of a plant being boosted.
[BOOST_COMBAT_SUN_DISCOUNT]
Reduced sun cost
[BOOST_DETAIL_SUN_DISCOUNT]
Costs less sun to plant. This boost lasts for 1 level.
[BOOST_TITLE_SUN_DISCOUNT]
Sun Discount
Shovel Bomb
Plants with this boost explode upon being shoveled up, dealing damage in a 3x3 area.
[BOOST_COMBAT_SHOVEL_BOMB]
Explodes when shoveled
[BOOST_DETAIL_SHOVEL_BOMB]
Explodes when shoveled. This boost lasts for 1 level.
[BOOST_TITLE_SHOVEL_BOMB]
Shovel Bomb
Marigold Boost
Unknown what it would have done, but might have been related to Marigold's old almanac entry which claimed she might give gems. It is only found in the 1.9 update.
Early Boost System
The Zen Garden was original going to feature other boost options for plants, but was scrapped along with the other boosts and only First Strike ended up being used.
v1.9
At this point the early boost system was incomplete, as only a few plants had unique boosts.
Image
Plant Name
Boost
Sunflower
Sun Discount (-15)
Peashooter
Bounty Hunter (+100% coin drops)
Wall-nut
Fast Recharge (-25%)
Potato Mine
First Strike
Bloomerang
Rapid Fire (x1.5)
Cabbage-pult
Extra Toughness (x2)
Iceberg Lettuce
First Strike
Grave Buster
First Strike
Twin Sunflower
First Strike
Bonk Choy
First Strike
Repeater
First Strike
Snow Pea
First Strike
Kernel-pult
First Strike
Snapdragon
First Strike
Power Lily
First Strike
Spikeweed
First Strike
Coconut Cannon
First Strike
Cherry Bomb
First Strike
Spring Bean
First Strike
Spikerock
First Strike
Threepeater
First Strike
Squash
First Strike
Split Pea
First Strike
Chili Bean
First Strike
Torchwood
First Strike
Lightning Reed
First Strike
Tall-nut
First Strike
Jalapeno
First Strike
Pea Pod
First Strike
Melon-pult
First Strike
Winter Melon
First Strike
Imitater
First Strike
*Marigold
Marigold Boost
*Laser Bean
First Strike
*Blover
First Strike
*Citron
First Strike
*E.M.Peach
First Strike
*Starfruit
First Strike
*Infi-nut
First Strike
*Magnifying Grass
First Strike
*Tile Turnip
First Strike
*Sun-shroom
Extra Toughness (x2)
*Puff-shroom
First Strike
^Scaredy-shroom
First Strike
^Pult-shroom
First Strike
^Roto-shroom
First Strike
^Dart-shroom
First Strike
^Zoom-shroom
First Strike
^Vacuum-shroom
First Strike
v2.0.1
v2.0.1 introduced a more complex boost system, with each plant having 3 options. Some plants have 2 of the same boosts but with different boost values.
Image
Plant Name
Boost #1
Boost #2
Boost #3
Sunflower
Extra Toughness (x1.25)
Shovel Bomb (270 damage)
First Strike (Plant Food)
Peashooter
Sun Discount (-15)
Shovel Bomb (270 damage)
Sun Discount (-50)
Wall-nut
Fast Recharge (-20%)
Shovel Bomb (270 damage)
Fast Recharge (-50%)
Potato Mine
Extra Toughness (x1.25)
Bounty Hunter (+100% coin drops)
First Strike (Plant Food)
Bloomerang
Sun Discount (-25)
Bounty Hunter (+100% coin drops)
First Strike (Plant Food)
Cabbage-pult
Sun Discount (-15)
Bounty Hunter (+100% coin drops)
Rapid Fire (x1.5)
Iceberg Lettuce
Fast Recharge (-20%)
Shovel Bomb (270 damage)
Fast Recharge (-50%)
Grave Buster
Fast Recharge (-25%)
Extra Toughness (x1.5)
Fast Recharge (-50%)
Twin Sunflower
Extra Toughness (x1.25)
Shovel Bomb (270 damage)
Sun Discount (-75)
Bonk Choy
Sun Discount (-25)
Extra Toughness (x1.5)
First Strike (Plant Food)
Repeater
Sun Discount (-50)
Bounty Hunter (+100% coin drops)
Rapid Fire (x1.5)
Snow Pea
Sun Discount (-25)
Shovel Bomb (270 damage)
First Strike (Plant Food)
Kernel-pult
Bounty Hunter (+10% coin drops)
Shovel Bomb (270 damage)
First Strike (Plant Food)
Snapdragon
Sun Discount (-25)
Shovel Bomb (270 damage)
First Strike (Plant Food)
Power Lily
Sun Discount (-25)
Shovel Bomb (270 damage)
Fast Recharge (-50%)
Spikeweed
Sun Discount (-15)
Bounty Hunter (+100% coin drops)
First Strike (Plant Food)
Coconut Cannon
Bounty Hunter (+10% coin drops)
Extra Toughness (x1.5)
Sun Discount (-100)
Cherry Bomb
Bounty Hunter (+10% coin drops)
Sun Discount (-50)
Fast Recharge (-1/2)
Spring Bean
Fast Recharge (-50%)
First Strike (Plant Food)
First Strike (Plant Food)
Spikerock
Sun Discount (-50)
Shovel Bomb (270 damage)
First Strike (Plant Food)
Threepeater
Extra Toughness (x1.25)
Rapid Fire (x1.25)
Sun Discount (-100)
Squash
Bounty Hunter (+10% coin drops)
First Strike (Plant Food)
First Strike (Plant Food)
Split Pea
Sun Discount (-25)
Extra Toughness (x1.5)
Sun Discount (-50)
Chili Bean
Bounty Hunter (+10% coin drops)
Shovel Bomb (270 damage)
Fast Recharge (Plant Food)
Torchwood
Extra Toughness (x1.25)
Shovel Bomb (270 damage)
First Strike (Plant Food)
Lightning Reed
Sun Discount (-25)
Shovel Bomb (270 damage)
First Strike (Plant Food)
Tall-nut
Sun Discount (-25)
Shovel Bomb (270 damage)
Fast Recharge (-1/2)
Jalapeno
Bounty Hunter (+10% coin drops)
Sun Discount (-50)
Fast Recharge (-50%)
Pea Pod
Extra Toughness (x1.25)
Sun Discount (-50)
Rapid Fire (x1.5)
Melon-pult
Bounty Hunter (10% coin drops)
Rapid Fire (x1.25)
Sun Discount (-100)
Winter Melon
Bounty Hunter (+10% coin drops)
Sun Discount (-100)
Rapid Fire (x1.5)
Imitater
N/A
N/A
N/A
*Marigold
N/A
N/A
N/A
*Laser Bean
Sun Discount (-50)
Shovel Bomb (270 damage)
Rapid Fire (x1.5)
*Blover
N/A
N/A
N/A
*Citron
Fast Recharge (-25%)
Shovel Bomb (270 damage)
Sun Discount (-100)
*E.M.Peach
N/A
N/A
N/A
*Starfruit
Sun Discount (-25)
Bounty Hunter (+100% coin drops)
First Strike (Plant Food)
*Infi-nut
Sun Discount (-25)
Shovel Bomb (270 damage)
Fast Recharge (-50%)
*Magnifying Grass
Extra Toughness (x1.25)
Shovel Bomb (270 damage)
First Strike (Plant Food)
*Tile Turnip
N/A
N/A
N/A
*Sun-shroom
N/A
N/A
N/A
*Puff-shroom
N/A
N/A
N/A
^Scaredy-shroom
N/A
N/A
N/A
^Pult-shroom
N/A
N/A
N/A
^Roto-shroom
N/A
N/A
N/A
^Dart-shroom
N/A
N/A
N/A
^Zoom-shroom
N/A
N/A
N/A
^Vacuum-shroom
N/A
N/A
N/A
* = Unused in this version, but available in future updates ^ = Plant is no longer in the codes as of the latest release N/A = This plant does not have any boost data.
Unused Watering Animations
The instant-use plants were originally going to have boosts, thus being available in the Zen Garden. They were probably meant for an early Zen Garden boost system, where plants would gain different types of boosts (see above), such as a decrease in cool down or sun cost. Only instant-use plants up to Far Future have these animations. They were later used after the 5.7.1 update when you level up the plant, with the exception of Imitater, as he cannot be levelled up. Every instant-use plant after Far Future will just have their idle animation reset.
The Sprout from the first game was replaced by small plants, although has a unique animation when watered.
Plants vs Zombies 2 - Hidden Zen Garden Animations