Sources & photography
These references support background facts and help you check the limits of our practical explanations. The original examples and diagrams are editorial teaching material.
Background reading
Homepage illustration
The bright houseplant scene on the homepage was generated with an AI image tool for Gravel on 20 October 2026. It illustrates an indoor plant setting; it is not a documentary photograph, a measured lighting example or evidence of our own plant-care trials.
Original diagrams and exercises
The guide diagrams are original vector illustrations created for these guides. Numerical examples demonstrate calculations and assumptions. They are not measurements from an experiment. We do not reproduce reference-site photographs, tables or article text.
Scope and overlap
Indoor plant growing conditions and observation. Interior decoration, balcony construction and room layouts belong to other journals.
Reference links checked on 18 October 2026. A source may change after publication. Recheck product or device instructions before applying a general explanation to a specific item.
References for the expanded library
The guides added on 18 October 2026 include original diagrams, exercises and worked examples, with these additional primary references.
- RHS: Epipremnum
- RHS: growing spider plants
- RHS: growing sansevierias
- RHS: growing peace lilies
- RHS: Monstera deliciosa
- RHS: Swiss cheese plants
- RHS: growing Phalaenopsis
- RHS: Phalaenopsis after flowering
- RHS: growing Christmas cactus
- RHS: growing calatheas
- RHS: tender indoor ferns
- RHS: growing epiphytic ferns
- RHS: houseplant growing guide
- RHS: indoor sap-feeding insects
- RHS: houseplant holiday care
- RHS: fungus gnats