Passion Vine Indoors: Why It Grows Vigorously But Won't Flower

Passion Vine Indoors: Why It Grows Vigorously But Won't Flower

An entomology expert (Teddy Kesting-Handly) breeds butterflies on a passion vine (Zebra Longwing and Gulf Fritillary). They've had it since June, trimmed twice monthly, it's ceiling-tall, but no blooms. It had large empty pods at one point. They attached photos of leaves and a tendril.

New Leaves and Tendril

Expert Response

The expert was confused: the questioner called it a "Passion Vine" but then said they didn't know what it is. It's likely Passiflora sp. (passion flower vine). If wondering why no flowers: probably indoors with insufficient light for flowering. If trying to narrow to a species, the expert couldn't help. Asked for clarification.