Allamanda, Mandevilla, Dipladenia: Tropical Vines for Seasonal Color

All three are stunning tropicals that won't survive Georgia winters outdoors. Here's how they differ:

Allamanda

Vining habit with yellow, pink, or red trumpet flowers. Needs support.

Mandevilla (Mandevilla splendens)

Classic vigorous vine with large pink/red/white blooms. Covers trellises fast.

Dipladenia (Mandevilla sanderii)

Bushier, less vining. Pink flowers. Better for containers than climbing.

Overwintering Any of Them

Before frost: dig, pot in 3-gal container, cut back to 12 inches. Keep in a cool (above freezing), bright spot. Water monthly, no fertilizer. Move out after mid-April.