Where to locate tall pentas seed? Especially 'Longwood Pink'...
I live near Longwood Gardens in PA. While visiting one summer, they had tall (~3-4'), pink pentas that were swarming in butterflies. I checked their site recently and saw that it was called, "Longwood Pink". I contacted the Horticultural department, and they said they don't sell seed but to search online.
Does anyone know where I can purchase this variety of seed OR any other variety of tall pentas? I can't even find tall pentas plants. I've been searching online for days with no luck. I've grown some newer dwarf varieties, but butterflies ignore them. I can't find older varieties listed anywhere. I'm most interested in pink and red pentas.
Here is a link that might be useful: My Garden