Mandevilla Blooming Season: How Long Do Mandevillas Flower

Image by JillLang

By Mary H. Dyer, Master Naturalist and Master Gardener

When does mandevilla vine bloom? How long do mandevillas flower? All good questions, and the answers depend on a number of factors. Read on for specific information about the mandevilla blooming season.

How Long is the Mandevilla Bloom Period?

How long is the mandevilla blooming season, and does mandevilla bloom all summer? Yes, you’ll usually see the first mandevilla flowers in early summer and the mandevilla bloom period lasts until the first frost in autumn.

This beautiful vine is tougher than it looks, but it is killed by frost in USDA plant hardiness zones 8 and 9. However, the roots are still alive and the plant will grow back in spring. In climates north of zone 8, the plant may not survive the winter. The solution is to grow mandevilla in a pot and bring it indoors when temps reach about 40 to 50 degrees F. (4-10 C.).

Caring for Mandevilla Grown Outdoors

Plant mandevilla in partial shade and well-drained soil. Water the plant regularly, but allow the soil to dry between each irrigation. Fertilize mandevilla regularly during the growing season.

To maintain your young mandevilla plant, train the vine to grow on a trellis. Pinch young plants to encourage bushy growth and prune as needed to maintain the desired size and shape.

Mandevilla Blooming Season for Plants Grown Indoors

Mandevilla is suitable for growing indoors year round, but this tropical plant needs a warm, sunny location such as a south-facing window, especially in winter. If possible, move the plant outdoors during the summer months.

Water when the soil feels dry to the touch, then allow the pot to drain thoroughly. Fertilize the plant regularly during spring and summer.

Repot the mandevilla plant to a slightly larger pot with a drainage hole every spring. Pinch wilted blooms regularly and prune the plant by half or less in late autumn.

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