Many popular indoor plants evolved under forest canopies and do best with bright, indirect or filtered light. Harsh direct sun – especially strong midday rays – can scorch leaves, fade variegation, and dry out delicate fronds.Many popular indoor plants evolved under forest canopies and do best with bright, indirect or filtered light. Harsh direct sun – especially strong midday rays – can scorch leaves, fade variegation, and dry out delicate fronds.