Question
I have several cymbidium orchids in my yard which buds quite often but the flowers never bloom.  The buds fall off/die before it can bloom.  I water twice a week and fertilize with miracle grow.  My cymbidiums gets full morning sun and the plant seems quite healthy

Answer
Sharyn, since you have several plants, you can experiment a bit.  Try moving one where it will get more sun.  Cymbidiums can take a lot of light-- even direct sun and some need it to flower.  If the leaves are a rich green, they probably are not getting enough sun.  Another possibility is that you are feeding the cymbidiums with a high nitrogen fertilizer.  A plant food with high nitrogen will have a higher first number (eg 30-10-10.). Feeding with a high nitrogen plant food signals the plant to enter a new growth cycle.  Try a plant food called a bloom booster which has a higher second number which reflects phosphorous content (eg 10-30-10).  The third possibility leading to bud blasting is low humidity. My gut feeling is that this is unlikely where you live but, I know, even areas close to a body of water can suffer from dry periods.