Other collections include Gymnocalycium (65 species), Peperomia (41 species), Viscum (40 species), and Maranthes (14 species), as well as collections of useful plants and North American trees and shrubs.
"Cactarium" greenhouse collections include: cacti and succulents, with caudiciform species exhibiting thickened root crowns, many species of Asclepiads, Aztecia, Gymnocalycium, Alstromeria, Euphorbia, and Ferocactus, plus two fine examples of Welwitschia mirabilis from Namibian deserts.