Too much water and too much direct sun (or too little) may be to blame. It likes temps of 70-80 F and high humidity. These issues plus too much nitrogen cause bud failure. So it is a bit fussy; learn how to care for lipstick plant with this article. https://www.gardeningknowhow.com/houseplants/lipstick-plant/growing-lipstick-plants.htm
Answered on May 27, 2018
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