Q.How Can It Get Them To Produce New Canes?
I have two ocotillos that green up some years and produce flowers from time to time, however the have not developed any new canes at the base in the last nine year since planting. They are pretty much the same size as when I bought them.

GKH_Susan
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on June 27, 2022
If they aren't growing, it may be a soil issue. These articles should help:
https://www.gardeningknowhow.com/ornamental/cacti-succulents/ocotillo/ocotillo-not-blooming.htm
https://www.gardeningknowhow.com/ornamental/cacti-succulents/ocotillo/ocotillo-plant.htm
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