When is the best time of season to visit and why?

We were just there last week and flowers were in full bloom and it was beautiful.

Anytime is great, really. I personally prefer late spring / early summer.

If you're looking for certain flowers ... come at appropriate time. Peonies and iris I always say between mothers day and memorial day typically. Summer flowers and grasses- Father's day to mid July before it gets too hot. August - September starts the fall flowers. The plantings change to keep color present.

I was there a free weeks ago. Beautiful sunny day. A little hot and humid but gorgeous.

This place is & stays gorgeous all year.

The only thing that's different will be the weather. It depends entirely on your preference. It is always beautiful.