Forms and cultivars 1
Each form shows its light value and where it was measured: ● on this form itself, ○ on the form or species named in the line. Grades: A Measured directly, B Indirect, C Distant.
Green 1
Grew in trials at 20, saturates at 330 µmol/m²/s · measured on green Philodendron hederaceum B
Will my window do?
Find the step of the scale that looks like your spot.
On the Fenestry light scale
Very dim to some direct sun
Philodendron pinnatifidum grew at about 1,100 lux; its leaves saturate at about 18,000 lux.
20 B and 330 µmol/m²/s B · Measured on Philodendron hederaceum
What the studies tested
Results from growing trials, many of them in commercial greenhouses. They are not care instructions.
Care
Potting mix
In trials on two Philodendron species, cuttings in coco coir grew roots about as long as in the longest-rooting mixes (25–28 cm), while cuttings in pure sand or pure perlite made the shortest roots or leaves.
B IndirectMeasured on Philodendron domesticum and Philodendron erubescens
Propagation
In a winter glasshouse, keeping the rooting medium at 24 °C or warmer raised the rooting grade of heart-leaf philodendron cuttings after 7 weeks from 2.1 to 2.8 on a 1–4 scale.
B IndirectMeasured on Philodendron hederaceum