Build a decorative cactus with this LEGO® building kit for kids LEGO® Botanicals Flowering Cactus (11509) offers children 9 years and older and plant fans great building fun. The building kit is full of details and lets children create a cool decorative cactus. The flowering larger cactus has a pink flower with a yellow centre. And the smaller LEGO cactus has pink buds that vary in how open they are. The cacti are depicted in natural green tones and stand in a pastel blue flower pot.