These can make nice small bonsai or accents and they should flower every yerar, depending on the species or genus.
There are many diffeent types from Ericas tio Callunas to other more tender sorts. Did it have flowers when you bought it, and where do you have it as it is an outdoor plant, effectively a small shrub. also many heathers dislike lime in their water and really should be potted in special ericaceious soil which has a low pH balance, meaning it is more acid than most soils.A sign that the plant is getting too much lime(too alkaline) is yellowing foliage which is soon remedied.

Heather is a relatively common bonsai subject. It's started by more advanced bonsai folks from large (3-6 inch diameter) trunked landscape specimens dug from gardens then pruned down to shape.

Here is a link that might be useful: english ivy bonsai

Mark, are you daft?? Heather is NOT ivy...never has, never will be ;-)

It's likely you have Cuphea hyssopifolia (Mexican heather)? Mine flower year 'round. I use a spare soil - maybe 15% organic, the rest equal amounts of grow grit & turface, and they need bright light and love it warm. All the sun (or good amounts of artificial light) you can give & a grow (propagation) mat for root warmth if you're serious about the plant. I use organic fertilizer pellets on them - 3 or 4 in a 6" container over winter - more in the growing season. White flies love 'em. The leaf/branch arrangement is opposite, so take that into account in your styling plan. Internodes are short - branches tend to be very straight and set quickly, so wire those you think you might use early on. It's not a true heather & is quite comfortable in the soil I described. It doesn't seem to prefer additional lime added to soils like true heathers.

Al

Just keeping you honest, Mark ;-)

Greg, Huh? ;-)

>It's likely you have Cuphea hyssopifolia (Mexican heather)? I used to have one of these, I think the cat killed it!

Here is a link that might be useful: Cuphea hyssopifolia (Mexican heather)