Yellow is definitely in this summer. And the flowers of Parodia leninghausii are showing off the yellow color at its best. This cactus has monikers like Lemon Ball, Golden Ball and Yellow Tower cactus.
My P. leninghausii started out as globular then later on becomes columnar. It is presently 40 cm tall and 12 cm diameter; its body has about 30 ribs with harmless bristly golden spines. Its flowers bloom near its angled crown; up to four flowers (with 5-6 cm in diameter pure yellow, silky, shining petals) can bloom at the same time.