I would never, ever, ever use Phoenix on a boy, but I live in China. In Chinese culture (and I believe in much of East Asian culture), the phoenix represents women. Historically, the phoenix represented the empress, whereas the dragon represented the emperor. So, when Chinese marry, often the woman wears a red qipao with a phoenix pattern, whereas the man wears a jacket with a dragon. Even wedding gifts follow this pattern. Phoenix is also a common character in women's names. There're also the idioms "to hope for one's daughter to become a phoenix", and "to hope for one's son to become a dragon." So, if you think your son will not ever come to East Asia, and will have minimal interactions with East Asians (esp. Chinese), then go for it. Otherwise, I'd caution you against this.
I think it works well for a boy and Phoenix Jasper is incredibly handsome. I love that the "traditional" name still isn't super common but a very distinctive alternative should your son ever feel he needs something more mainstream. (Jasper is also one of my all time favorites - it just doesn't meet my tri-lingual requirement as the Ja sounds so different in German, English and Spanish).
I was thinking about posting a poll asking whether people think Phoenix is best on a boy, a girl or if they consider it truly unisex. I am glad someone kinda of beat me to it.
I have it on my middle names' list, and contemplated moving it up to my first names' lists. I even asked hubby about it, but he didn't give me a clear answer.
As a middle name I would use it on either a boy or a girl. As a first name I would only use it on a boy. I do consider it unisex, but it comes across as more masculine than feminine imo and I prefer feminine names for girls. That's just my personal taste.
I love Phoenix, and will probably end up using it, although I am not sure how yet.
Phoenix Jasper is handsome.
I would do;
As a middle name I like:
Actually one of the things I don't like about Phoenix is that it seems like one of those neo-macho nouveau names like Diesel and Ace. It's technically unisex, but I loathe it on a girl, although it does rank in the top 1000 (still much lower for girls, though.)
Overall I think it's a good name. I like the sentiment.
It definitely reads masculine to me, but I don't care for it generally. It sounds a little try hard.
I think it's more male than female too.
I don't really like it on a girl, although it would depend on the girl's personality.