Question
i bought two orchids from a store here close to where i live in knoxville tn witch is zone 7 if that helps you ,, anyway, the white one kept its flowers for about 2 months and were beautiful but it has scince lost it flowers , and now i dont know what to do for it , the leaves and stem are still green and healthy , and the visible roots are ok too although some have a dried area on them i water when the soil is semi moist in the mornings with luke warm water ,, the other orchid is purple and still has all its flowers ,,, tell me what to do , as i love my plants very much and want to keep them healthy and happy ty
Gloria backhand

Answer
Orchids are annual bloomers.  Now, the thing to do is keep the plant healthy and happy and putting on new growth.  This involves an annual repotting following flowering (I assume you have a phalaenopsis or moth orchid).  Locate a bag of orchid potting mix (not soil) and unpot your plant.  Wash the roots off carefully and remove any roots that are mushy as these are dead.  You need to know how healthy your plants roots are as it what's beneath the surface of the potting mix that counts the most toward healthy new growth. Healthy roots are firm and will provide the basis for new growth. Do not use water from a water softener.  Repot using the new potting mix. Phalaenopsis orchids prefer growing in an east window, getting morning sun.  If kept healthy, you should see new blooms about this time next year. Phalaenopsis orchids are house plants and don't like the large swings in temperature found with outside growing.

If you have another type of orchid such as a dendrobium, my advice would be a bit different.