FREE: Mandevilla (6) seeds

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Let the sun shine in. Put your plant in a sunroom or by a sunny window. Moving your mandevilla outdoors for the summer will give it more blooming power. A semi-sunny spot outdoors is ideal. Just be sure to bring it back inside before the temperature drops to 55°F/13°C at night.

Repot in spring. Mandevilla is one of the few flowering plants that grow well in a large container. Move it up 1 pot size every spring as necessary. Use a pot with drainage holes to prevent root rot.

Prune it back. Unless you want a huge shrub in your home, pruning mandevilla is necessary. To control its size, prune it back in late fall -- by half when necessary. Mandevilla flowers at the tips of new branches, so you'll get more blooms this way. Pinch off spent blooms to encourage more flowers.

Overwinter your plant indoors. Mandevilla is tropical, not hardy. Unless you live in a year-round warm climate, bring your plant inside for the winter. It will tolerate a minimum of about 55°F/13°C. Water sparingly in winter, but don't allow the soil to dry out completely.

Growing mandevilla indoors is a little work, but worth it. You'll be rewarded with several months of bright and bold trumpet flowers. Treat it right and you'll enjoy your flowering mandevilla plant for many years