First off, really nice logo! I like it, the bulb/vine is a really accurate visual representation of what you’re going for.
I’ve just got one suggestion. As someone who didn’t know what Sproutr was, I recommend making your “About” page your “Home” page. It does a good job introducing what Sproutr is and might be better served as the first page new people see coming in. Then change the current “Home” page to “Talk” or “Discuss,” something like that. The info you have in the “Contact” page could serve as the “About” section.
Overall I like the design and flow of the site. If you ever want to do swipe banners or need help with web graphics I recommend http://www.freelancehour.com, they have professional designers with lists of services and prices.
I wish you the best, hope this was helpful, and good luck with Sproutr!