Philodendron Spiritus-Sancti 

A critically endangered Brazilian endemic native to Espírito Santo state, where fewer than six wild plants are known to survive — all on a single privately managed site. More specimens now exist in cultivation than in the wild, and successful tissue culture propagation has made the species more accessible than its legendary status once suggested, though it remains among the most prestigious collector philodendrons available. A hemiepiphytic climber that produces long, narrow, pendant, deeply sword-like leaves with distinctive small auricles at the base — a leaf form found nowhere else in the genus. Leaf size increases dramatically with vertical climbing and overall plant maturity.

• Light: Bright indirect light — field data suggests a relatively wide tolerance of 1,000-3,500 fc. More light-adaptable than many collector philodendrons; avoid only harsh direct midday sun.

• Soil: Very open, chunky epiphytic mix of orchid bark, perlite, coco coir, and charcoal; excellent aeration and drainage are essential to the hemiepiphytic root system.

• Temperature/Humidity: Warm, stable temperatures between 65-80°F; notably more humidity-tolerant than most collector aroids — performs well at 50%+ though 60-75% is ideal.

• Watering: Keep consistently but lightly moist — allow only the top inch to approach dryness between waterings. Consistency matters more than any specific schedule.

• Fertilizer: Feed with a balanced liquid fertilizer every 4 weeks during active growth; consistent feeding supports the fastest progression toward mature leaf expression. Reduce in winter.