I pruned my mock orange (philadelphus) last year and it now a mass straight stems, will these ever produce flowers?
It is possible you pruned your mock orange at the wrong time.
It should have been pruned after it flowered, then any new growth made during the summer months would flower in the following year.
If you pruned it late in the year you will have cut out most of the folowing years flowering stems.
Alternatively you may be feeding it wrongly, e.g. giving it too much nitrogen, hence the mass of growth.
If this is the case, give your plant a feed of sulphate of potash and this will encourage more sturdy growth.