Гугль-мугль нам в помощь, вот нашла:"Hi, I live in zone 6A, Toronto. Mandevillas are tropical plants. When you bring in your plant submerge the pot and all in a deep pail of warm water for approx. 20 minutes. This is to drown any unwanted guests that might like to overwinter inside your home. If you have a sunny window you can cut back the vine to about 12 inches. If you don't have a sunny window you can let it go dormant. Just water when the soil is dry. Do not overwater it or you could drown the root system. Just keep an eye on it for any signs of stress, bugs or such. If you do have a sunny window you can also fertilize it at half strength. If you have grow lights that's even better. It should receive at least 14 - 1 6 hours of grow light a day if you want it to keep on flowering. If you want to keep it dormant do not fertilize, just water enough to keep it alive. It should do just fine. Hope this helps! Cheers! Lorraine"