Miniature roses can be planted and kept indoors for a limited period of time. They need certain essentials, such as bright sunlight and moisture. It's very easy for rose bushes to get dried out, but watering and misting will help prevent this. However, you also don't want rose bushes to sit in water because the roots may rot. Once it gets warm outside, you should move the rose bush outdoors so it can benefit from morning sun.
Place the plant pot in direct sunlight. Roses need full sun to flourish, so put the container in the sunniest window you have.
Look at the stems to determine if the rose is getting enough sunlight. If they are stretched out and there are large gaps between the leaves, the plant needs more sunlight. Move it to another location.
Spray an indoor rose plant once a week. This will eliminate dust and cut down on the likelihood of a spider-mite infestation. Mist the tops and bottoms of the leaves with a fine mister.
Watch for the drying or browning of leaves. This indicates that the air is too dry and you need to be more vigilant about watering and misting the rose bush.
Push your finger into the soil every few days to determine the moisture content. If the pot is light and the soil feels dry, water it generously until the water is pouring out of the holes on the bottom of the container.
Put the rose in a container that is the right size. You don't want one that is too small, as it will cramp the roots. An extra large container will give the plant too much room, and it will be slow to grow.
Fertilize the indoor rosebush once a month. Use a houseplant fertilizer with a balanced ratio of nitrogen-phosphorus-potassium.
Trim the dead leaves off your rosebush whenever you see them. Look for white, powdery spots (which indicate powdery mildew) or black spots (which indicate black spot fungus). Treat both diseases with a combination of 1 tsp. of baking soda, three drops of vegetable oil and 1 qt. of water.