Q.Keeping the Ocotillo straight
After the ocotillo is grown to 10′ or more, how do you keep it growing straight up? We have 3 ocotillos. The first one curves gently at the bottom in an upward pattern. It remains with all branches growing straight up. The 2nd and 3rd ones look like something came down onto the top of them and tried to flatten them. How do we keep the canes growing straight up after curving up from the bottom?

Yes, you can stake the Ocotillo if necessary.
Here are links that will help you.
http://www.tucsoncactus.org/pdf_files/TCSS_Ocotillo_Planting.pdf
https://www.gardeningknowhow.com/ornamental/cacti-succulents/ocotillo/ocotillo-plant.htm