New growth can be pinched or even sheared annually to produce tight and slow habit. Plants purchased may have received such treatment, burst into looser shapes after planting out and establishment. Annual growth mere inches even without pruning, so development of large open specimen not going to catch anyone by surprise.

This Pines make up is to grow. 6ft. tall and 10 ft. wide. It's not worth the time to groom this conifer into something it doesn't want to be. In time it will disappoint you because it has been altered it into something that will not be desirable and pleasing to the eye.

Dave

google IMAGES page will give you a quick idea of the plants ....

hit the link ..

ken

Here is a link that might be useful: link

Habit variable, not always even completely shrubby. There is no set universal mature size like 6' X 10'. A couple of us have measured ones 43' X 49' and 55' X 26'.