kiki-do,
Both of these genera are fairly easy to grow and bloom if you are aware of their requirements.
Miltonias-
They are very vigorous and have long rhizomes between growths so they like to be mounted. Mine are on cork, but they can also be potted in your favorite mix. My mix is 5 parts fine orchid bark (pre-soaked to drop the wood from the bark) 1 part charcoal, 1 part perlite and a scoop of bone meal. You can tinker with it a bit, if you want a more airy mix, put in more perlite and/or medium size bark.
They are very tolerant of heat, and like temperatures 60-85F. They can easily handle more heat as long as you give them more water. I fertilize them regularly during the growing season. They like good air movement also. They can handle cooler temperatures if you dry them out a bit. They can handle close to cattleya light conditions, so pretty bright.
Miltoniopsis-
Same mix as listed above. The BIG key is annual repotting in the fall, they love fresh mix and go downhill quickly without it. They like cooler temperatures than Miltonias, more like 55-80F is preferred but they can handle a bit lower if they are dry and a bit higher with more water or
misting. Try to keep the temperature in the desired range. They also like good air. They like a bit less than cattleya light. If they get too much brightness, the foliage will take on reddish tints and if not enough light they get darker green. The best is somewhere in between.
The primary blooming season for Miltonias is summer into fall, and for Miltoniopsis is spring into early summer. Miltoniopsis are rather precocious and can bloom at any time during the year.....
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