Sorry, Riaan, but that's a bit of a nebulous question.
Pretty much all plants have a "rest period" between blooming. Blooming consumes a lot of energy, so there is a time period to recoup that. Granted, it varies all over the map among plants - some continue to build resources during inflorescence growth and blooming, while others tend to pause during that stage - but you also have to understand that your culture plays a big role in that, too.
A well-grown, mature phalaenopsis can stay in bloom for months and months - the best I ever had was typically nine months on, three off. Given lesser quality care, the bloom period will be shorter, and recovery longer.
Even in the case of many sympodial plants that only bloom once, the frequency of blooming - in reality, rate of maturation of the plant - can again, be very much influenced by the culture. When I started growing paphs on a windowsill, for example, getting a bloom in a year was pretty standard. When I moved into a greenhouse, on average, that dropped to 9-10 months, and by continual "tweaking" of light levels, feeding and watering, repotting schedules, etc., I'm pushing that down.
So let me be a real "enabler" and suggest that you get a whole bunch of plants, so that their flowering becomes a continual succession!