How this juniper has this shape? (grow, trees, how to, pruning)

[Nn2036]

They call it a kaizuka juniper in a nhk documentary.

I wonder how they look like an umbrella. May be they were trimmed to look that way.

They grow on an island called nokonoshima.

[wit-nit]

Trimmed and shaped starting from when they were young shrubs.

Juniperus chinensis aka Hollywood juniper.

[Nn2036]

Is there any article teaching us how to trim these trees to look like that?

I don't know if I can trim the top of juniper or pine. I fear that it would stun the tree and It cannot grow taller.

[Hemlock140]

In nature trees often lose their top and grow a new leader. In the high mountains, conifers will often get bent over by snow until strong enough, then end up with an “L” shaped top. On Mt. Rose Nevada, for example, many younger pines and firs go sideways several feet then upright. Google juniper bonsai images and you will see a lot of interesting shapes that were achieved by pruning and wiring.