Some of them are open to the public (guided visits only), including the large collections of azaleas and other Ericaceae (No. 6), ferns (No. 15), cacti and other succulents (No. 16), various tropical plants (No. 18), the 23.5 m high Big Palm Greenhouse with an important collection of orchids (No. 26) and the greenhouse with a pond containing Victoria amazonica (no. 28).
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The root of the genus name, which was originally Regelia in the family Myrtaceae, was in honor of German botanist Eduard August von Regel, superintendent of the Saint Petersburg Botanical Garden in Russia in the 19th century.
Head Gardener Franz Faldermann of the Saint Petersburg Botanical Garden was commissioned to design the botanical garden.