Very nice photos, but some corrections (I was one of two gardeners there from 2004-2008 and curated most of the plants in your photos)
Eucalyptus is Breynia nivea rosea
Orchid like is an orchid- a Cattleya hybrid
Exploding cactus is Agave americana albo-marginata
Purple tipped cactus is Agave potatorum, often confused as Agave parryi
The side of the Greenhouse that needs paint is scheduled to undergo a full exterior renovation in accord with the garden's public-private partnership with Erie County within the next two years.
Thanks Don for your message. It'w worth to look to this gallery. I love the shots of the leaves the most and the Purple Tipped Cactus is my favourite. Great job.