I have a large gardenia bush that has bloomed nicely for the past two years in June. Last Fall my gardener pruned it slightly. It has prolifically produced leaves this year, but no blooms, and it is now July. It looks healthy as can be with no spots on the leaves and is very full. What can be wrong that it did not bloom?

Pruning at the wrong time of year. Possibly had already set buds, and was pruned off.

When would be a good time to prune? This year my gardenias finally bloomed with lots of buds ready to go. I'm so happy about this, I read they are very tricky. They are in a pot in partial to full sun. I would like to have blooms next year. What should I do?

The best time to prune is after all the blooms have finished. Then give it a small dose of fertilizer for acid-loving plants (like an "azalea and camellia" formula).

But do you really want/need to prune that lovely little bush? Unless you have constraints of space, I'd leave off pruning at least for another year. If the plant gets too big over the summer, pot it up into a larger pot. It looks very happy, and I wouldn't mess with success unless you absolutely must.