When Grandpa goes on vacation, Aaron’s in charge of the garden. With Grandpa’s map, plan and blessing, what could possibly go wrong? But when they both are confronted with the unexpected, they struggle to see the good until they realize great outcomes can come from messy surprises.   MISHMASH SUMMER, partially told through postcards will appeal to readers ages 5-8 who enjoy the heartfelt intergenerational relationship in Brooke Smith’s The Keeper of Wild Words, and the use of letter writing as in Can I Be Your Dog, by Troy Cummings.