Board Thread:General Discussion/@comment-5815089-20140721153705/@comment-24471175-20140730174223

My thread explains why sunshrooms should always be used over the sunflower

http://plantsvszombies.wikia.com/wiki/Thread:133384#12

Or to summarize it:

The first sun either plant produces pays for itself. Sun shroom's first sun is 25 and it costs 25. Sunflower's first is 50 and costs 50

After the Sun shroom produces 25 sun, it grows and produces 50, making it equal to the sunflower

And later on, the Sunshroom grows and produces 75. Straight upgrade

P.S: Same goes for plant food. You're comparing 150 sun to 225 sun