Driveway strips are homeowner property; the HOA has an easement and an obligation to maintain the grass. Once a driveway is converted to hardscape it is the responsibility of the homeowner to maintain it.
Many homeowners chose to have stones/rocks in their driveways. As dirt accumulates between stones, weeds sprout. We are at the beginning of a new growth season - please be sure to control the weeds in your driveway.