Phalaenopsis (Sedira) japonica plant grown by Heather A Jordan.

Description: Sedirea japonica is native to Japan and Korea. This orchid is supposedly found from the Ryukyu Islands and south to the Iriomote Island. It is a small sized, cool to cold growing species with a monopodial, very short stem carrying 5 to 8, narrowly elliptic to strap shaped, obtuse at the obscurely bilobed apex, 6 cm in length and about 2.5 cm in width leaves. Sedirea japonica live relatively shortly, usually blooming for no more than 4-5 seasons.

Culture: Light: Sedirea japonica needs a light level of 18000-25000 lux. The plants should never be exposed to the direct rays of the midday sun. Strong air movement should be ensured all the time. Temperature: It is a thermophilic plant that requires a cold winter rest. In summer, the average day temperature is 26-31 ° C, at 19-23 ° C at night, with a daily amplitude of 7-8 ° C. The average temperature of the winter day is 12-13 ° C, the night 3-4 ° C, with a daily amplitude of 9 ° C. Intermediate-warm grower, needs temp drop for spike. Substrate, growing media and repotting: Sedirea japonica can be grown in shallow containers with good drainage or on tree rootstocks. However, such plants require high humidity, and during hot and dry weather, they should be watered several times a day. It can also be grown in small, shallow pots or baskets with a fast drying surface with excellent drainage and good aeration, containing moisture retaining components, but which allows quick drying after watering.