Boston ferns appreciate a little TLC. They like warm and humid conditions. And they don’t enjoy temperature extremes, either outside or from drafts, air conditioners, and heating vents indoors. It’s important to maintain stable growing conditions for Boston ferns, as any element to their care that’s out of whack can quickly damage the plant.
Plan to water frequently to prevent the soil from drying out. And fertilize from spring to fall when the plant is actively growing. Regularly misting your fern or using other means to raise humidity also is typically a must unless you live in a very humid climate. While pruning typically isn't a major chore, you should remove dead fronds as needed to keep the plant looking attractive. Overall, these plants don't have any major pest or disease problems as long as their growing conditions are met.
Boston ferns do best in bright, indirect light. Too much shade can result in sparse fronds that aren’t their typical bright color. And too much sun can burn the fronds. So both outdoors and indoors, make sure direct sunlight won’t hit your plant.
These ferns like organically rich, loamy soil with good drainage. Poorly drained soil can cause root rot and ultimately kill the plant. For container Boston fern plants, use a peat-based potting mix.
To successfully grow Boston ferns, it is key to keep the soil lightly moist (but not soggy) at all times. If the soil begins to dry out, the fern’s foliage can quickly dry out and drop off the plant. During the fall and winter months, slightly reduce watering, as the plant is not actively growing. But if you notice the fronds getting dry, increase the amount of water you are giving the plant.