I planted a stem cutting of citronella in the soil. Its been about three weeks. I see leaf growth on it. I was curious about the root growth, so pulled out the stem to check and noticed that there was no root formed. Is this a failed propagation so do I still need to wait for more time for the roots to grow? Thank you so much!

Cuttings typically grow roots before they grow leaves. If your cutting was growing new leaves it was either using up energy it would need for roots, or in the process of rooting. I suspect that you accidentally ripped the roots off of the cutting when you pulled it out of the soil.

Thank you so much for the response. I will be more careful and patient with my other cuttings!