User blog comment:Zombieman1350/New Achievements/@comment-3977620-20110801212853

I just recently achieved "Good Morning," but I succeeded without planting any Sun-shrooms. That gave me a new idea: Solar Power. The idea behind this achievement is that you have to complete a Day level without planting any sun-producing plants. When you play 1-1 for the first time (one lane of grass and only have the Peashooter), this achievement can't be gained, as there are no sun-producing plants available yet. This also cannot be gained by levels using the conveyor belt, as no sun is required to plant.