A Ficus lyrata does not tolerate wet or bone-dry soil. It also hates cold air, fast temperature swings, harsh afternoon sun, and being moved around the house. The main ficus lyrata stress factors all trace back to one trait. This plant wants things steady. It punishes you with brown spots and dropped leaves when its world keeps changing on it. Get the spot right and you head off most trouble before it starts.
Here is what makes this tricky. A fiddle leaf fig can look perfectly fine while it quietly resents the spot you put it in. A drafty doorway or a hot radiator nearby does slow damage before you see any sign. By the time leaves spot and fall, the stress has been building for weeks. Learning to read the spot, not just the plant, saves you a lot of grief.
Soggy soil is the fastest way to lose one. When the pot stays wet, the roots sit in airless mud and start to rot. Rotted roots cannot pull up water, so the plant droops even though the soil is soaked. The UC Master Gardeners of Humboldt and Del Norte Counties note that this fig dislikes soil that is too wet or too dry. Bone-dry soil is the other trap. Let the pot go fully dry and the roots get parched, then the leaf edges crisp and curl.
Cold air ranks right up with bad watering. This plant hates cold drafts and the temperature swings that come with them. NC State Extension reports that brown spots show up from temperature fluctuation near vents. A heating duct, an AC register, or a leaky window all push the air temperature up and down fast. The leaves cannot handle that whiplash, so the cells break down and brown patches form. NC State Extension also warns it must stay above 55°F (13°C), since colder air shocks the whole plant.
Harsh light is the last big stressor. A fiddle leaf fig loves bright, indirect light, but direct afternoon sun through glass scorches the leaf surface. You get pale, bleached patches that turn crunchy and brown. The fix is simple. Pull your plant back a few feet from a hot south or west window. You can also filter the light with a sheer curtain. The plant still gets plenty of brightness, just without the burn. Watch the upper leaves that face the glass, since they show scorch first.
Frequent moving is the sneaky one most people miss. Every time you shift the pot, the plant has to adjust to new light, new airflow, and a new temperature. I recommend you pick a good spot and leave it there. I've found that the plants left in one place settle in and grow far faster than the ones I keep rotating. Constant relocation keeps your fig in a low grade state of shock. That shows up as slow growth and dropped lower leaves. Even turning the pot a quarter turn now and then is fine, but a full move across the room is not.
Set it in steady, bright, indirect light away from vents and cold glass. Water only when the top 2 inches (5 centimeters) of soil feel dry, and resist the urge to move it once it settles in.
Give this plant a calm, steady home and most of its problems never start. Check that top 2 inches (5 centimeters) of soil before each watering so the roots never drown or dry out. Keep it clear of drafts and direct sun, and let it stay put. Do that, and your fiddle leaf fig rewards you with big, glossy leaves for years.
Read the full article: Ficus Lyrata Care: Complete Guide
