The Crochet Cactus Garden 7 Patterns. Renate Kirkpatrick's Freeform Crochet~Knit~Fibre Designs Stefan Knauf Cactus XV Now part of the Mercedes Benz Art Collection. Installed at the Mercedes Benz headquarters in Stuttgart, the galvanized steel cactus rises from a field of gravel. @stefan_knauf @mercedesbenz Stefan Knauf, Calathea crocata, aka Eternal Flame plant: The word Calathea comes from the Greek for basket or vessel, while crocata means yellow like a crocus. Plant of the Week: Fairy Castle Cactus Known for its whimsical, castle like towers, the Fairy Castle Cactus (Acanthocereus tetragonus 'Fairy Castle') is a slow growing, low maintenance plant that's perfect for bright indoor