Philodendron tortum (Fernleaf Philodendron)

Philodendron tortum is an unusual evergreen climbing aroid in the Araceae family native to northern Brazil and Bolivia, where it grows in humid tropical forests and climbs tree trunks by aerial roots. Its most distinctive feature is the deeply divided foliage: mature leaves are split into numerous extremely narrow, twisting lobes, producing an airy, almost skeletal or fern-like appearance quite unlike the broad leaves of many familiar Philodendrons. As a root-climbing vine, it benefits from a moss pole, tree trunk, or other vertical support that allows it to develop its natural growth habit.

Philodendron tortum grows best in bright filtered light, warm temperatures, and a loose, well-drained aroid mix with regular moisture but good aeration around the roots. It appreciates relatively high humidity but should not remain waterlogged. Indoors, its narrow foliage and moderate growth make it particularly suitable for container culture where larger Philodendrons may require too much space. Best suited to USDA Zones 10-11 outdoors, it should be protected from frost and prolonged temperatures below about 50F.