|bought monrovia 5-gal michelia champaca himalayas alba 4 yrs ago. came as 5+ft tall. NEVER FLOWER. It is planted in a 24x24 container, morning sun till noon. on drip system. other complementay plants @ the rim of the container grow very well ! Talked to nurserywoman @ Yamagami. Very disappointing. She said|
|I think the nursery professional is on the right track. The most common reasons for non-flowering are 1)immaturity, 2) lack of sufficient sunshine, 3) too much nitrogen fertilizer. At 4 years of age, your champaca is certainly old enough to produce flowers so we'll eliminate immaturity as a cause. Morning sun but afternoon shade may not be quite enough direct sunshine for your tree, especially in your mild year around climate. 6-8 hours of sunshine would be better. Since your plant is in a container, why not move it to another garden spot where it will get more direct sunshine? Leave it there until next spring. I'll bet your tree flowers for you after a few months of more sunshine. As for fertilizing, if you use a fertilizer high in nitrogen, you'll end up with lots of lush, green growth, at the expense of flowers. So, a 0-10-10 fertilizer would not supply nitrogen, but would supply phosphorous (to encourage bloom), and potassium, for strong root and stem growth.|
You have nothing to lose and everything to gain (in terms of flowering) if you move your champaca. Give it a try - I bet your tree will reward you with its fragrant flowers.