Smithiantha thrives

About 5 weeks ago I potted the rhizomes of Smithiantha, and then they sprout and grow rapidly until now based on the appropriate climate. Not extra fertilizer was given so far because the best time to fertilize Smithiantha is after the root system stably develops. We can estimate the timing by checking the growing status of the shoots because if the root doesn't develop well, the shoots look weak with less shine.