Plants vs. Zombies: Boss Rush/Zen Garden

In Plants vs. Zombies: Boss Rush, the Zen Garden is unlocked after Level 8. The overall function of the Zen Garden is identical to that of the original, however the end results are different.

Boosts
Unlike the boosts in PvZ2, boosts in PvZBR are instead permanent slight power boosts. You get a boost for a plant every time it is grown to completion in your garden. PvZ2 boosts are instead given for levels. They come in defined levels. The first one contains one boost and is always given the first time it's grown. The second contains a variable amount (usually between two and five). These boosts are rather powerful, but not excessively so. The third contains a variable amount (usually between six and twelve) that are very powerful. The more boosts a plant has, the rarer it is to get. Boosts stack. To unlock boosts from the next level, you must have at least 2/3 of the boosts from the previous level.

Level 1
Skilled Shooter: Boosts fire rate and damage by 7.5%.

Level 2
Thicker Peas: Peas deal 15% more damage.

Healthier Soil: Boosts health by 50%.

Quickdraw: Shoots 15% faster.

Level 3
Professional Shooter: Boosts fire rate and damage by 20%.

Thick Cell Walls: Boosts health by 50%.

Rapid-Fire: Shoots 30% faster.

Double-Shot: 25% chance to shoot two peas at once.

Panic Mode: Shoots 15% faster when health is 50% of maximum.

Piercing Shot: Has a 10% chance of ignoring armor.

Level 1
Tougher Shells: Has 12.5% more health.

Level 2
Sturdy Shells: Boosts health by 20%.

Shoving Power: Slowly attacks zombies, dealing 2 damage.

Super-Resilience: Takes two smashes to kill and twice as long to roll over.

Level 3
Steel-Plating: Boosts health by 50%.

Shove-fu: Shoving speed is doubled.

Ground-Pound: Deals 30 damage to its square when planted.

Bowlmergency: Can be triple-clicked to roll like it's Wall-nut Bowling.

Hyper-Resilience: Smashes taken and time taken to be rolled over is doubled.

Nutosis: Creates another Wall-nut when Plant Food is used on it.

Level 1
Faster Charging: Arms itself 20% faster.

Level 2
Stronger Blast: Deals 25% more damage.

Larger Blast Radius: Blast radius is increased by 20%.

Rapid Charging: Arms itself 30% faster.

Level 3
Insta-Arm: Arms itself 49% faster.

Super Spud: Deals 50% more damage.

Kiloton: Blast radius is increased by 30%.

Multato: Creates an extra Potato Mine when Plant Food is used on it.

Shockwave: After exploding, strikes again, dealing 1/3 of its normal damage.

Camo Shield: Cannot be attacked directly.