This is my first attempt at cuttings from my Bumblebee. These cuttings are 15 days old and still no roots protruding the peat ball, although I only did check one of them. How long before I should expect to see Roots through the peat ball? The cutting in the red pot on the lower left is one I did 5 weeks ago straight into potting soil and it's starting to show growth so happy with that. 

We have found that the hotter a cutting gets the faster it roots, although this can kill the plant by drying it up.

guywithtrees liked this

Do you spray the cuttings with any fertilizer solution of any kind at some point or just water

Cuttings in general, will show new leaves only after rooting, so that's always a good sign