"Q. What kind of 花 is that on the cover, and what does it mean?
A. That is a ruffled tulip. As for the meaning... If you've read the Twilight FAQ, 你 know that the 苹果 cover had a lot of meaning for me, and I was an active part of the covering process. However, that experience is 更多 the exception than the rule in the publishing world. Something to keep in mind if 你 intend to embark on a career as a writer: lots of things 你 might expect to be under your control are not. Covers, for example. Those are mostly up to the publisher and the marketing and sales departments. So I don't know what the 郁金香 means—I didn't have anything to do with this one."
你 can find it under Twilight Series > New Moon > FAQ. Hope I helped :P
Lot's of people have different opinions on this, but I believe that the 花 represents Bella's heart. Why? Because I think that it's red because she's hurt inside, and the white represents a little bit of hope/love that's still there. However there's a petal dropping off because she feels as if she's falling apart. But, that's just my view, most people's are different.
There are sites that say the 花 has absolutely no meaning seeing as Stephanie Meyer did not choose the cover for New Moon. Then there are some sites that say the ruffled 郁金香 represents a beautiful 蝴蝶 coming into view. I'm not sure which one is true, but that's all I could find. (:
I believe that the this 花 fades, and it represents as she feels Bella when Edward goes away, but for it me represents sinceBella's 心 is in this book, the white thing represents the cold (is Edward) and the red thing is the heat in this case he would be Jacob.
To Stephenie Meyer, the 花 doesn't have any meaning. But I personally think the tied in red and white shows Jacob coming into her life. The answer is basically up to you.