Answer: Heliotrope (Heliotrope arborescens) should not be too difficult to start from seed provided the soil temperature is rather warm -- say about 75 degrees. (Remember, too, that soil temperature tends to be somewhat cooler than the ambiant room temperature.) They should germinate in about a week or two. Another method of propagation is by taking cuttings; perhaps your friend would have better luck trying that.
Q&A Library Searching Tips