Linh is having a picnic in her rooftop garden for all of her friends, and she needs help searching for blueberries to finish preparing her dishes. What do we know about blueberries? They're small, blue, and grow on bushes--and, just a second, is that a blueberry? No, that's a gooseberry. Where, oh, where could those blueberries be? Can you help Linh find them in time for her picnic? The fourth title in the Where in the Garden? picture book series...