Lavender Lies by Susan Wittig Albert (1999, Hardcover)

Finally China and McQuaid get married! The book opens with China, Ruby and the Whiz making lavender hearts for China's fast approaching garden wedding. One thing after another goes wrong with China's wedding plans - the cake baker runs off with the bakery worker, a hurricane is approaching Texas and McQuaid, acting sheriff, is wrapped up in a murder investigation that may take presidence over his wedding and honeymoon. China, Ruby and Smart Cookie step forward and take the investigation in hand along with keeping up with the herbal wedding plans. Due to their super sleuthing the murderer is discovered in time for the very, very, rained out wedding!

Lots of lavender lore; for example; snakes like to lie underneath lavender and rosemary (two wedding herbs) bushes. So much so that Tuscany lavender workers come equipped with big sticks! Many lavender recipes and herbal wedding sources.