In winter, allow the soil to dry to a depth of 2 or 3 inches (5-7.5 cm.) before watering. Feed the plant with a liquid houseplant fertilizer. Water the plant with the fertilizer every two weeks in spring, summer and fall.
As with most flowering plants, the better the sun exposure, the more blooms you will get. However, crown of thorns will reliably bloom as long as it gets at least 3 – 4 hours of bright, direct sunlight per day. Outdoors, aim for a spot full sun. Indoors, place your plant in a west or south-facing winter during winter.
If leaves begin to look burnt, add more shade.
If you have any questions feel free to reach out!