Q. My maidenhair fern isnt doing well and is browning around the edges. What should i do?
Maidenhair ferns (Adiantum spp.) are a real challenge to grow in the home. The most common cause of failure is low humidity. These delicate ferns prefer greater that 60% humidity which can be difficult to provide, particularly during the dry winter months.
Extra watering will not compensate for a lack of humidity. Try growing the plant in a large terrarium or under a glass dome/cloche. You can help increase the humidity by also growing the plant in a saucer of pebbles with water. Using a hygrometer (moisture meter) will let you know if the humidity you have provided is enough to keep your plant from becoming crispy.
Courtesy of NYBG Plant Information Service
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