I do not know if this has to do with technique, weight, bike size, fork travel or perhaps a combination of the above, so here goes.

I have a very difficult time keeping my front wheel on the ground when ascending a somewhat steep incline. I tend to have to stand and put most of my weight on the handlebars. This works fine on climbs that are free of most obstructions, but..... on ones with rocks, roots, etc., it is not always a pretty outcome.

I notice that my sons and husband can stay seated, so what is wrong or what am I doing wrong?