How to control the flowering period of Osmunda japonica?

Flowering regulation of Osmunda japonica: In order to make potted Osmunda japonica bloom more, more brightly and more frequently, in addition to selecting dwarf varieties, measures such as plastic pruning and fertilizer and water management should be strengthened to regulate flowering.

Lighting requirements: Ziwei likes sunshine, so it must be placed in a sunny place outside during the growing season. Flowers are brightly colored in sunny places and can grow well in semi-cloudy conditions.

Cultivation soil: I like fertile loam with good drainage, which does not grow well in cohesive soil and is drought-resistant and waterlogging-resistant.