- Facebook group: Pachycereus, Carnegia and others exotic columnar cacti Growers Worldwide
- Cactus seeds, Trichocereus, columns and others. Buy/Sell/Trade
- Facebook group: Trichocereus
- Facebook group: Wonderful cactus and succulents - Cactus maravillosos - Cactus gardening
- Facebook page: Cactus and succulents
