How To Prune A Beautiful But Overgrown Hummingbird Plant(Dicliptera Suberecta)

Question

I have an hummingbird plant, planted four years ago, in my small front garden that has thrived beautifully in the Richmond, VA heat and as a result, also grown through our picket fence into and halfway into our city sidewalk. It’s been a showcase on our small block, but unfortunately it’s at the point where I need to cut it back. Never before being cut back, the inside has become leggy. Several of the main stems have grown through the fence (toward the western sun) and at least half of the plant is on the outside of the fence. I’d love a recommendation on how to prune back the plant either by cutting back smaller limbs away from the sidewalk, or if I need to sadly cut back the stems that go through the fence to the base, losing that side of the plant. Where on the plant is best to cut, and when in the season? Thanks for any help!

Answer 1

This article should help:

https://www.gardeningknowhow.com/ornamental/flowers/hummingbird-plant/growing-hummingbird-plants.htm