"Light meters measure the amount of light hitting a spot. Some are dedicated devices; others are phone apps that use the camera sensor. Instead of guessing whether a corner is bright enough, you measure it and then find the right plant for that spot with more confidence. The method Hold the meter at leaf height where your plants actually sit and take readings at different times of day."
"Patterns will quickly appear: the dramatic fall-off as you step away from a window, and just how low the numbers are in the centre of most rooms. The test I tested a decent meter and a phone app. The app could spot the extremes very dark v very bright but gave jumpy results in between. The meter was steady and confirmed that my bright home is actually quite dim, and no amount of fertiliser will fix that."
Many houseplants fail due to insufficient light, and bright, indirect light is often misunderstood. Light meters and phone apps quantify the amount of light hitting a spot, turning guesswork into actionable numbers. Hold a meter at leaf height and take readings by the window, in the room centre and in problem corners at different times and during winter to reveal patterns. Readings show steep fall-off away from windows and low light in central rooms. Phone apps can detect extreme dark or bright conditions but give unstable midrange results. Dedicated meters provide steady measurements that help choose appropriate plants for each location.
Read at www.theguardian.com
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