[header] How to grow passion fruit [title] Use fresh seeds. [step] Freshly harvested passion fruit seeds germinate quickly, but older, dry seeds can take months to germinate if they grow at all. [substeps] A few days before you intend to plant the seed, buy ripe passion fruit from the store. 
Open it and collect at least half a dozen seeds. Spread the seeds out onto burlap and rub them until the juice sacs burst open.