Plant Sunlight Check

Is that spot really bright enough for your plant? Human eyes are terrible at judging light levels. A windowsill that feels "plenty bright" can be delivering a fifth of what your plant needs — that happens indoors all the time. More houseplants die from too little light than from anything you did with the watering can. This app estimates the ambient light (lux) at any spot from your iPhone camera's exposure settings, and tells you whether it's enough for the plant you want to grow there. ■ Three steps 1. Pick your plant (33 varieties; choose "Typical houseplant" if unsure) 2. Carry your phone to the spot, hold it level with the screen facing up 3. Read the verdict once the number settles ■ Four verdicts - Not enough light - A little low - Just right - Possibly too strong When a spot falls short, the app tells you by how much: "needs about 3x more light to reach the ideal range." That…