the genus brassia contains 35 species which are commonly known as spider orchids. they are native to the tropical america and grow epiphytic. there are a lot of cultivars and intergeneric hybrids, like brassocattleya (brassia x cattleya) available.
how to grow brassia rex
brassia rex can be located from light shaded to bright with some morning and/or evening sun.
it can be cultivated at room temperature throughout the year and needs a winter minium of 14 °c/57 °f.
the spider orchid must be grown in a special orchid mix (with fir bark and peat moss) a regular potting soil is not suitable. it don’t likes to be repotted often so wait till the soil turns acid (after approx. 3 years). its roots often climb out of the mix.
it can be deep watered, what’s flowing out of the pot’s hole must be removed after a few minutes. before watering next let it dry somewhat. sitting in water can cause rot.
a half diluted orchid fertilizer can be given monthly if the orchid is actively growing or flowering.
to increase humidity, brassia rex can be sprayed over with water in the morning. thereby the water can evaporate throughout the day. this extra humidity can help to tolerate if the soil gets a bit drier from time to time.
the bloom spike can be cutted when it has dried, it will not flower again. after blooming, brassia rex is producing new shoots. eight to twelfe months later, when pseudobulb and leaf growth are finished, the orchid is ready for flowering again.