How to Care for Mandevilla Flowers

General Care

• 1

  Place the mandevilla on a trellis where it can receive lots of sunlight. Do this by adding the plant to well-drained soil next to the trellis so that it can vine around it.

• 2

  Water the soil of the plant slowly so that the soil gets wet but it not drenched. Mandevillas are sensitive to too much water, so allow the soil to dry out before watering it again.

• 3

  Fertilize this botanical with a balanced, water-soluble solution every two to three weeks.

Winterize the Mandevilla

• 4

  Prune the mandevilla back by trimming it down 12 inches above the soil line. Do this when the temperature starts to drop between 45 to 50 degrees in order to prepare (winterize) your plant for survival during the colder months.

• 5

  Inspect the leaves of the plant for insects in preparation for bringing the botanical inside. If you find any, use an insecticidal soap and follow the instructions on the container to get rid of them.

• 6

  Allow the plant to dry out a bit and then remove it from the outside and place it into a pot filled with well-drained soil. Position the pot in your windowsill that gets the most sunlight. This flowering botanical lives as a houseplant until the next spring.

• 7

  Monitor the soil moisture and continue to lightly water in order to maintain this plant indoors. Again, the soil should have a dampness to it and be allowed to completely dry between watering cycles.