Try to visit at the end of may/beginning of June for the magnificent rhodedendrons of all colors. Other times of the year there are daylilies, etc, but nothing quite as magnificent.
On hot days, it can get stifling on the unpaved trails, but the open areas allow nice breezes. Other than the car museum, the other buildings (carousel, special exhibits) don't take much time to go through but offer some relief from the heat.
Not much for young children or older teens here.
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