A colloquial term used by houseplant collectors and indoor horticulturists for a fenestration, which is the natural opening or clear tissue found in the foliage of plants like Monstera deliciosa. These splits and holes evolved in the wild to let light pass through to lower leaves and to help the foliage withstand high winds. In the nursery trade, plants with heavy fenestration command higher prices.
Heard on the job
My new Monstera albo just pushed out a leaf with double fennies, so the lighting in this grow room must be dialed in perfectly.
Insider tip
The appearance of fennies on a juvenile plant indicates it is receiving adequate light and maturing properly.
Also heard as
- fenestration