Q.Fertilizing Yucca Plants
What should I use to fertilize my outdoor Yucca plants? How often and when is the best time of the year to do it?
Certified GKH Gardening Expert
Because this is a desert species, they do not require much fertilization. If this is grown in a decent quality soil that is not compacted, then fertilization will only be necessary when a soil test reveals nutrient content to be low. You will likely never see this, but if you do, an all purpose at half strength will do.
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm