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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →To care for mandevilla indoors, give it a bright spot, keep its potting mix well drained, and adjust watering and feeding to whether it is actively growing or dormant. If you are bringing an outdoor container plant inside for winter, inspect it for pests first and prune it to fit. You can overwinter it as a growing houseplant or let it rest in a cooler, lower-light location; the right choice depends on your available light and space.
1. Choose an overwintering approach
Mandevilla can spend winter indoors either as an actively growing houseplant or in a cool, dormant state. The University of Maryland Extension describes both approaches, and the University of Illinois Extension also outlines sunny indoor growth and cool dormancy.
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| Approach | Light and space | Care while growth is slow |
|---|---|---|
| Active growth | Needs a bright indoor location and room for the vine to grow or be trained. | Keep it comfortably warm; water as needed to keep the mix moist but not soggy. Follow the plant’s growth rather than a fixed schedule. |
| Cool dormancy | Uses less active growing space, but still needs a suitable indoor place protected from cold. | Reduce watering and keep the mix on the dry side without letting it dry out completely. Do not fertilize until new growth appears. |
Neither method is right for every home. Choose active growth if you have a bright place and can accommodate the vine; choose dormancy if you want to limit winter growth and can monitor moisture while the plant rests. Maryland Extension advises withholding fertilizer until new growth appears in later winter or early spring.
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2. Give it bright, indirect light
Place an actively growing mandevilla near a bright window or in another well-lit indoor location. North Carolina State Extension specifically recommends bright indirect light, while Clemson University and Maryland Extension also recommend a bright location for indoor plants. Light needs can vary by cultivar, so watch for how your plant responds rather than assuming all mandevillas tolerate the same conditions.
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3. Use well-drained soil and avoid soggy roots
Mandevilla prefers moist, well-drained soil. Use a container with drainage holes, and empty excess water from its saucer or outer pot so the roots are not left sitting in water. During active growth, check the mix and water when it needs moisture; do not keep it continually saturated.
4. Keep an actively growing plant warm
For active indoor growth, aim for comfortable room warmth. An Ask Extension expert response dated May 2, 2025, gives 65–70°F as a preferred growing range. Clemson says mandevilla can tolerate a minimum of 45–50°F and recommends moving it indoors for winter. Treat that lower figure as a cold-protection threshold, not a target temperature: move the plant inside before outdoor conditions approach it, and keep it away from cold drafts.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.5. Reduce watering and pause fertilizer if growth slows
When light levels fall, temperatures cool, or the plant becomes dormant, it uses less water. Clemson and Illinois Extension advise reducing watering in cool, low-light or dormant conditions. For a dormant plant, Illinois Extension recommends keeping the soil on the dry side without allowing it to dry completely. Maryland Extension advises pausing fertilizer until new growth begins. Resume more regular watering and feeding in response to renewed growth, not simply because the calendar has changed.
6. Prune, support, and inspect the vine
Prune for indoor space
Before bringing a container plant inside, trim it to a manageable size and remove dead or diseased leaves. Maryland Extension also recommends pruning tropical plants to fit the space available. Pinching the tips of a young plant can encourage bushier growth.
Add support only if needed
Mandevilla is a climbing vine. A small trellis or stake is optional, but can help keep the plant upright and direct growth where you want it.
Check for pests before moving it inside
Inspect leaves, leaf axils, and crevices carefully before bringing the plant indoors, as Clemson recommends. The University of Florida IFAS notes that scale and mealybugs can occasionally affect mandevilla; if pests are present, insecticidal soap is one option. Follow the product label and its indoor-use directions. Mandevilla’s milky sap may irritate skin and may be toxic if ingested, so avoid contact and keep pruned material away from children and pets.
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