my hosta browns out at the end of every summer, starting mid august -- how can I keep it going longer?
The keys to keep hosta going are to grow in shade and to keep the soil moist. Some morning or dappled sun is OK. I hope you have 3-4 inches of mulch to help keep the soil from drying out. After routine watering, dig a small hole with a trowel and see how far done the soil is moist. The roots are deeper than the top 2 inches so make sure soil is moist at root level - up to 8 inches down.