In Plants vs. Zombies 2, the single sunflower costs 50 sun, while the double sunflower costs 125. With 1x initial sun upgrade which gives 75 sun when a level begins (obtainable in one of the side branches), you can wait for 2 normal sun drops and you can build a single Double Sunflower. Or you can plant 2 single sunflowers in swift succession, which costs 25 sun less
If there are no space constraints, and if you have the potato mine (which let you drag the out beginning of the level while waiting for more suns), which will provide more sun over time (after factoring the costs of the sunflowers)?
Best Answer
If there are no space constraints and you don't plan to use plant food on any of them, the single flower always wins out because 2 sun flowers cost 100 sun and produces suns at the same rate as a double sun flower.
However, this rarely happens as there's usually some kind of constraint on space as you go star hunting or do the challenge missions.
Typically, unless I absolutely need that extra plant slot for something critical to a level, I like to bring both sun flowers. I start out with a few of the normal ones (up to 3-4) and then switch to only planting double sun flowers.
The main benefit of the double sun flower is that a single plant food on it gives you twice as much sun, and I almost always use my first plant food for sun, which tends to make the rest of the level way easier.