A Holly Has Self Seeded And Is Growing Into My Pyracantha Bush – Will The Holly Destroy / Take Over The Pyracantha Or Can I Leave

Question

it alone? Thank you,

Answer 1

I'd trim them both, untangling them and giving them some space for air circulation. Here are a couple articles with tips:
https://hortnews.extension.iastate.edu/2003/3-7-2003/pruneshrub.html
https://www.gardeningknowhow.com/ornamental/shrubs/shgen/trimming-overgrown-shrub.htm