Plants vs. Zombies/No-Sunflower strategies

These stages can be finished without using any Sunflower: It's really insane, but not impossible.
 * Survival: Day (Hard)
 * Survival: Pool (Hard)
 * Survival: Roof (Hard)
 * ZomBotany
 * ZomBotany 2
 * Bobsled Bonanza
 * Zombie Nimble Zombie Quick
 * Pogo Party
 * Seeing Stars
 * Art Challenge Sunflower
 * Art Challenge Wall-nut
 * High Gravity
 * Unsodded
 * Big Time
 * Sunny Day

Survival: Day (Hard)
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Survival: Pool (Hard)
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Survival: Roof (Hard)
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ZomBotany
right|400px3 Plants needed:
 * Potato Mine
 * Spikeweed
 * Garlic

ZomBotany 2
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3 Plants needed:
 * Garlic
 * Lily Pad
 * Cattail

Bobsled Bonanza
right|400pxUsing only 3 plants the Minigame can be cleared.

Mainly: No Sunflowers needed. Although it requires a bit of luck at the start. It is definitely possible.
 * Lily Pad
 * Cattail
 * Potato Mine

Zombie Nimble Zombie Quick
right|400px3 Plants needed:
 * Lily Pad
 * Cattail
 * Wall-nut

Pogo Party
right|400px 5 Plants needed:
 * Garlic
 * Coffee Bean
 * Fume-shroom
 * Gloom-shroom
 * Magnet-shroom

Another strategy without losing any Roof Cleaner:
Plants needed: Video for this strategy here.
 * Flower Pot
 * Potato Mine
 * Imitater Potato Mine
 * Coffee Bean
 * Magnet-shroom
 * Fume-shroom
 * Gloom-shroom
 * Garlic
 * Puff-shroom
 * Squash

Seeing Stars
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3 Plants needed:
 * Starfruit
 * Puff-shroom
 * Imitater Puff-shroom

Art Challenge Sunflower
Plants needed:
 * Puff-shroom
 * Imitater Puff-shroom
 * Starfruit
 * Wall-nut
 * Umbrella Leaf
 * Garlic
 * Potato Mine
 * Squash

Art Challenge Wall-nut
Plants needed:
 * Puff-shroom
 * Imitater Puff-shroom
 * Fume-shroom
 * Gloom-shroom
 * Coffee Bean
 * Garlic
 * Wall-nut
 * Tall-nut
 * Potato Mine
 * Cherry Bomb

High Gravity


Plants needed:
 * Flower Pot
 * Puff-shroom
 * Imitater Puff-shroom
 * Fume-shroom
 * Gloom-shroom
 * Coffee Bean
 * Garlic
 * Potato Mine
 * Squash
 * Wall-nut

Unsodded
Plants needed:
 * Puff-shroom
 * Imitater Puff-shroom
 * Fume-shroom
 * Gloom-shroom
 * Coffee Bean
 * Garlic
 * Potato Mine
 * Cherry Bomb
 * Squash
 * Doom-shroom

Big Time


Plants needed:
 * Puff-shroom
 * Imitater Puff-shroom
 * Coffee Bean
 * Fume-shroom
 * Gloom-shroom
 * Garlic
 * Potato Mine
 * Wall-nut
 * Squash
 * Cherry Bomb

Sunny Day
Similar with those above but much more easier.

Because the sun falling from the sky is larger, it's worth 50 sun.