I've put together a list with succulent plants that are both easy to care and virtually impossible to kill. It is difficult to undo the damage done when plants get too little light or grow too tall. Generally low maintenance, easy going plants, sedums do really well outdoors under very bright light to full sun. This cactus is drought-tolerant and prefers full sun. Kalanchoes prefer to receive natural sunlight that is relatively bright; however, they will usually not do well in full sunlight. Cacti that have poisonous spines can prove dangerous to children and pets. 1.