The invention relates to a process for decorating cactus and object thus obtained after applying, by means of a paintbrush, 2-3 layers -total dry thickness of about 200 µm-of a ductile and harmless solution to the plant, consisting of distilled water and acrylic paint with a photoluminescent effect, in a proportion of 18-20%, on the areolas and glochids of the plant, preferably from the Cactaceae family, after cleaning the surface of the cactus of impurities, oils and greases by using a soft bristle brush, the cactus thus being capable of absorbing and storing light within it and, when placed in a dark place, emitting light, for ornamental purposes.
