How to care for your Mandevilla
Use these instructions to care for a Mandevilla. This guide will tell you how to water a Mandevilla; its light, temperature, humidity preferences and any additional care it might need to help it grow.
Place your Mandevilla in a full sun location that receives 6 or more hours of direct sunlight per day. The Mandevilla can tolerate partial sun exposure, but flowering will be reduced. The plant will not produce flowers in a fully shaded location.
Water your Mandevilla when 50% of the soil volume is dry. Water slowly, allowing it to absorb into the soil until it begins to drip out of the drainage hole. Do not use a saucer outdoors or allow the pot to sit in standing water.
For most areas of the US, your Mandevilla will not require added humidity in an outdoor environment. For desert regions, mist your Mandevilla frequently or use a pebble tray to boost humidity.
Mandevillas grow best in temperatures above 55°F. The foliage can be damaged at temperatures below 45°F. We recommend keeping your Mandevilla indoors in a bright spot until night temperatures are consistently above 50°F.
Feed your Mandevilla once every two weeks in the spring and summer with a balanced water-soluble fertilizer. To encourage maximum blooming, switch to a bloom-boosting fertilizer high in phosphorus during the summer months.
The Mandevilla is considered mildly toxic to pets and humans if ingested.
Mandevillas cannot survive the winter throughout most of the US, but it’s easy to overwinter your plant indoors. To do this, wait until night temperatures dip below 50°F. Cut back the vining stems as much as you’d like, leaving at least 8” of stem length. Keep the plant in a bright spot indoors, water sparingly, and do not fertilize. Your Mandevilla will not grow quickly, if at all, over the winter. Begin fertilizing it again in the early spring and move it outdoors once temperatures stay above 50°F.