Moss & StemA room that looks bright to us is not automatically a bright place for a plant. Our eyes adjust as we move indoors; a leaf has no such shortcut. The useful question is not “Is this a sunny room?” but “What reaches this particular leaf, and for how long?”
Follow one ordinary day
Visit the proposed spot in the morning, around midday, and in the late afternoon. Look for a direct beam, a crisp shadow, or a broad wash of daylight. A sharp shadow suggests direct sun; softer shadows suggest more diffuse light. This is a rough clue, not a measurement. Check at the height of the leaves, including those tucked behind other plants.
Notice obstructions. A balcony above, a neighbouring wall, a deep window reveal, or a tree can matter more than the window’s direction. Light usually falls away quickly as you move farther into a room. A shelf across the room is a different growing place from the sill.
Use direction as a starting point
East-facing windows often receive morning sun; west-facing ones often receive stronger afternoon sun. In the Northern Hemisphere, south-facing windows generally receive more direct sun and north-facing windows less. In the Southern Hemisphere, the north–south pattern is reversed. Near the equator, the sun’s seasonal path makes these simple rules less dependable. Local shade and weather still have the final say.
Return when the season changes
The angle of the sun and the length of the day change through the year. A safe summer position may receive a low winter beam; a leafy tree may lose its screen. Revisit the same spot rather than assuming its label stays true. Curtains can soften strong sun, while a slightly closer position may help when daylight becomes scarce. Keep leaves away from cold glass.
Let new growth answer
Watch over several weeks. Stretching stems and smaller new leaves can suggest insufficient light. Bleached or crisp patches after a move may indicate excessive sun, though watering and other stresses can cause similar symptoms. Change one thing at a time and move plants gradually. A damaged leaf will not repair its appearance; healthier new growth is a better sign that you have found a workable place.