In Lost Film‘s Western Massachusetts garden, overwatered plants are a lesson — and the inspiration for August’s hazy soundtrack. The Easthampton-based project of artist Jim Hewitt this week (August 11) released “Blossom Rot,” an indie rock daydream that’s ripe for stillness and contemplation during summer’s final weeks. “I find a lot of solace in the garden lately, which is where the title came from,” Hewitt says. “I’ll have something growing pe…