Red Yucca Zone 10

Question

High desert red yuccas planting in decorator rock 1-2” is the size of the rock. What does this expression mean : “ Where the cold air settles ?” The lowest temperature here is in the high teens to low 20’s Thank you

Answer 1

Warm air rises and cold air sinks. Red yucca is hardy to USDA zone 5 so it should survive temperatures in the high teens.

https://www.gardeningknowhow.com/ornamental/foliage/yucca/red-yucca.htm