Let's take for instance this top-grade one.
Its power could even slice through the defenses of someone at the Immortal Ascension level, which suggests just how formidable the Golden Qi is—such potent Golden Qi had a very, very significant impact on it.
The first batch of twenty-three top-grade Spirit Plants had already lost seven, which left the spirit planters extremely anxious.
What they wanted were not Spirit Plants with brief lifespans, but rather those that could continue to grow and eventually evolve into aides capable of assisting them with their tasks.
The spirit planters discussed at length but ultimately had no solution—actually, some methods could suppress the issue, but the problem was that the cost was extremely high, and the solution wasn't permanent.
As spirit planters of the Spiritual Leaf Sect, famous researchers no less, they naturally didn't have to worry about lacking resources, but selling to outsiders was a different story.