Brugmansia Not Blooming Indoors: Light and Fertilizer

London, Ontario gardener's brugmansia (6 ft, healthy leaves, 4 hours morning sun in office) hasn't bloomed in two years after heavy pruning. Asks if grow light would help.

Insufficient Light

Brugmansia needs full sun (6+ hours direct). 4 hours morning sun through a window is inadequate.

Fertilizer Adjustment

• Use low-nitrogen, high phosphorus/potassium fertilizer (e.g., 10-30-10) for flowering.
• Office conditions (stable temp, low humidity) are not ideal.

Recommendation

• Move outdoors to deck/sunroom in summer.
• Prune in fall, then move to brightest indoor spot for winter.
• Grow light (high-output LED, 12–14 hours) can supplement but won't replace outdoor sun.

Brugmansia is a tropical shrub—it wants to be outside in summer. Office culture limits blooming.