Passiflora mixta, commonly known as Tumbo Passionflower, is a hardy Andean vine native to highland cloud forests from Venezuela to Bolivia at elevations between 1,700 and 3,700 meters. Seeds germinate very slowly, requiring 2-3 months or longer at cooler temperatures. Fresh seeds with pulp germinate more reliably than stored cleaned seeds.
Before sowing
Soaking seeds for 24 hours in warm water is essential due to hard seed coat. Fresh seeds with pulp germinate faster than stored seeds.
Sowing
What to expect
Tips
For best results: Obtain fresh seeds with pulp when possible. Soak for 24 hours in warm water before sowing. Plant at cool temperatures (15-20°C) rather than tropical warmth—this species prefers cool conditions and is well-adapted to warm temperate climates. Germination is extremely slow and can take up to 12 months or longer for stored seeds. Be patient and do not discard pots; seeds may wait until spring to emerge. Maintain consistently moist (but not waterlogged) substrate. Light is not essential. Provide excellent drainage to prevent damping-off.
Sources: Plant World Seeds, Tropical Plants Database (Ken Fern), Wikipedia, Eden Brothers, Useful Tropical Plants Database
