While the overall feel is a bit derivative and contrived, there are nonetheless plenty of bitingly sharp lines and performance moments to keep this well-cast ensemble piece percolating along.

Petunia augurs more titillation than it delivers and only works occasionally.

Features a top-notch cast, a few beautifully observed moments, and some amusingly bitchy dialogue. But its rambling, episodic structure and gallery of troubled characters will ultimately prove too off-putting to attract theatrical audiences.

It’s possible to make a great movie out of family dysfunction, but this one is too short on insight to rank with the best of the genre.

Even in shabbily put together dramedies, such as this one, there can be a glimmer of light. Here it’s Christine Lahti’s anguished, nuanced turn as a wife and mother excited to begin a new phase with her husband.