To care for Asplenium nidus houseplants, place in an area of the home with indirect or shady light. Asplenium nidus prefer evenly moist surroundings. Watering the soil often during growth and housing the plant in a moderately humid area will help to maintain a healthy environment during care for Bird’s Nest Fern.Click to see full answer. Keeping this in consideration, how often should you water a birds nest fern? Water. Water 1-2 times a week. Humidity. Tolerates average indoor humidity. Temperature. Average home temperature of 65°F-75°F. Size. Indoors, the Bird’s Nest Fern can grow to approximately 2′. Common Problems. Very resistant to disease and pests. Precautions. Not known to be toxic. Likewise, how do you treat Asplenium Antiquum? Proper Care: Protect Asplenium nidus from overwatering or exposure to hot dry conditions. The key to a healthy Asplenium nidus fern is providing enough warmth and moisture. Keep them moist, but not wet. It is a slow growing plant especially when grown indoors. Consequently, how do you take care of a bird’s nest fern? Caring for Bird’s Nest Fern Avoid watering the center of the plant (the rosette) because it acts as a cradle and can cause the plant to rot. Test the moisture level by sticking a finger an inch into the soil. Give the plant plenty of humidity by occasionally misting the fronds with a water bottle. How much light does a birds nest fern need?Your Bird’s Nest Fern will do best in medium to low light. The more light it receives, the more the leaves will crinkle and the less light, the flatter the leaves will be. Keep in mind, too much light or direct sunlight will cause the fronds on the fern to yellow and die.