Light is the variable people misjudge most often indoors, because the eye adapts to dim rooms while plants do not. Two things decide how much light a plant receives: the direction the window faces and how far the plant sits from it.
Reading a window by aspect
In the northern hemisphere, the direction a window faces sets its character. The notes below describe a typical Canadian home; trees, balconies, and neighbouring buildings can change them.
- South-facing: the brightest exposure, with strong direct sun for much of the day. Best for light-hungry plants, but tropical foliage may need to sit back from the glass to avoid scorching.
- East-facing: gentle direct morning sun, then bright indirect light. Comfortable for a wide range of foliage plants.
- West-facing: bright indirect light with stronger, warmer afternoon sun.
- North-facing: the dimmest, with no direct sun. Suits low-light tolerant species only.
Distance matters as much as aspect
Light falls off quickly as you move into a room. A plant a step back from a bright window receives a fraction of the light a plant on the sill does. As a rough guide, the closer a foliage plant sits to the glass without direct midday sun on its leaves, the better it usually does indoors.
Matching species to light
| Light level | Suits | Typical placement |
|---|---|---|
| Bright, indirect | Monstera, fiddle-leaf fig | Near an east or west window, or back from a south one. |
| Medium, indirect | Pothos, peace lily | A few feet from a bright window. |
| Low tolerated | Snake plant, pothos | Further into a room or near a north window. |
The short-daylight problem
Canadian winters bring fewer daylight hours and a lower sun angle, so even a good window delivers less light from December through February. Plants respond by slowing growth; pale, stretched new shoots reaching toward the glass are a sign the spot is too dim for the season.
Practical responses include moving plants closer to the brightest available window for the winter, cleaning the glass and the leaves so more light gets through, and accepting that growth will pause until daylight lengthens again. A simple full-spectrum grow light can supplement a dark corner where natural light is genuinely insufficient.
Rotate the pot. Plants lean toward their light source. A quarter turn each week keeps growth even and stops a one-sided shape from setting in.
Signs of too much or too little
- Too little: leggy stems, small new leaves, loss of variegation, slow drying soil.
- Too much direct sun: bleached patches or crisp brown edges on leaves that face the glass.
References
Last updated: June 3, 2026.