Prayer plants prefer moderate to low indirect light levels. If the leaves on your plant begin to curl and turn brown, your plant is receiving too much light. Providing this plant with too much direct sunlight can burn the foliage.
Prayer plants require moist but not soggy soil. This houseplant also is one of the few houseplants that does not like its soil to dry out between watering, so try to keep the soil consistently moist at all times.
The biggest need for this houseplant is humidity. It requires high humidity levels to flourish, so a daily misting will go far. If the tips of the foliage begin to brown your plant may not be getting the humidity it needs. By providing high humidity levels, you help in ensuring beautiful flowers bloom. This plant is also very temperamental when it comes to temperature changes. It prefers a range of 65 to 80 degrees, however it does not like fluctuations in temperature. Do keep it away from drafts.
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If the tips of the leaves are turning brown or curling up, the plant is getting too much light. Another cause for brown tips can also be the chlorine found in tap water. Use filtered water or let water sit for 24 hours before watering the plant.
A daily misting can help provide the plant with the humidity it needs that may not be present in your home. You can also set a container of water near the plant, the evaporating water will give the plant some added humidity.