Textarea in a form is not submitting via POST with jQuery AJAX

For a reason that is unknown to me, my form is not submitting the text typed into my <textarea>.

ajax code:

$.ajax({
type:'POST', 
url:'****.php', 
data:$('#blogForm').serialize(),
success: function(responseSubmit) { blah blah etc...

The inputs work just fine, and correctly post to my database.

The form is:

<form id="blogForm">
                        <input type="date" name="date" id="blogDate">
                        <input type="text" name="title" id="blogTitle">
                        <textarea name="blogContent" id="blogBody"></textarea>
                        <input type="submit" name="submit" id="blogSubmit">
                    </form>

And what I get when I inspect in firebug, the POST is: date=09%2F25%2F1986&title=Title&blogContent=

As you can see, the blogContent is empty. Why is this?