OK hears a good tip or hint what ever you want to call it ok you just put two rows of sunflowers it dose waste a bit of your time but it allows you to get a lot of suns so you can't build more defense. ENJOY HOPE IT HELPS OUT :D
At the first,plant 1 row of Sunflowers.Then,plant 1 row of Snow Peas.Then,plant 3 rows of Repeaters and upgrade them to Gatling Peas.Plant Chompers in front with Tall Nuts.Fill the last rows with Spikeweeds and upgrade them to Spikerocks.
By Following these steps you can buy more plants from crazy & to increase you plants growth
First of all you need to disable the full screen Then go to your zen garden feed the plants Normally it take 30min or more feed them again. To feed them more quickly,all you have to do is to increase your system time(2 or 3 hrs) By doing this you'll have the chance to feed the plants again.
Same method as above for buying the plants It takes 24 hrs to buy plants again from crazy So windup you're system time