How to Get Your Night-Blooming Cereus to Flower

Three Non-Negotiables for Epiphyllum oxypetalum Blooms

Your description matches Epiphyllum oxypetalum. Flowering requires:

1. Extreme pot-binding. Roots must fill the pot completely. Every up-potting delays blooms by years.
2. Bright indirect light all day (indoors: a few hours direct sun okay; outdoors: light shade only, no direct rays).
3. Cool fall nights (50°F / 10°C or lower). Keep outside until near freezing for best bud set. Your 50–55°F porch may suffice.

Supporting Care

• Gritty, porous potting mix; keep moderately damp (drier in fall).
• Half-strength fertilizer monthly.

Meet all three, and those huge, fragrant night blooms will appear.