There was only one seed, so setting up a control group was impossible, no chance for alternative trials, just one opportunity.
This was indeed a headache, what if it didn't sprout?
For other seeds, even for the World Tree, Ange had over a thousand seeds to experiment with, and it didn't matter even if all failed; the Tree of Life was still alive and wouldn't go extinct.
That's why Ange figured out that bizarre germination temperature for the World Tree. What if the Heaven-Reaching Divine Tree required the same, extremely high temperatures to germinate?
To increase the chances, Ange moved the Little Sapling out and pointed at the seed, "Watch it."
The Little Sapling sent out a message of bewilderment.
Ange buried the seed in the soil, then both hands plunged into the dirt, raising the temperature.
The soil's temperature slowly rose, at a rate of 0.1 degrees per minute, slowly.