“Don't place houseplants near vents," Upham advises. "The dry air in winter can cause the leaves to scorch when the air is blowing directly on the leaves.” And if you want to group several plants together, putting them near a humidifier can promote healthy winter growth.
“Dry, crunchy leaves could mean a lack of watering, or placement too close to a heating vent,” Cutler says. “Yellow leaves mean overwatering or improper lighting. And sticky leaves can mean pest infestation, which requires immediate attention.”