Q.I have a large container of orchid fertilizer, 19-31-17. What other plants can I use it on?
I no longer have orchids. I have African Violets indoor, Mandeville and know out roses outside. Also, peppers and eggplant.
Certified GKH Gardening Expert
This would be suitable for use with any plant in bloom or flowering. Any time that they need a boost for fruit production is also a good use for it.
The high phosphorus indicates that it is best suited for plants in flowering, or right before.
This article will help: https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/fertilizer-numbers-npk.htm