Red flower blooms - nothing says tropical living like this mandevilla which puts out colorful trumpet-shaped red blooms along its woody, twining stems Blooming plant care - the mandevilla grows best in warm, tropical climates with high levels of humidity and moisture, Hardy in U.S. department of agriculture plant hardiness zones 10 and 11, they require full sunlight for at least 6-hours per day, although light, filtered shade during the hottest part of the day is acceptable, these evergreen vines thrive in fast draining, loamy, fertile soils with a pH of 6.6 to 7.8. avoid planting mandevillas in heavy clay soils with poor drainage to prevent roots from rotting Maintenance - as the mandevilla vines grow throughout the season, they will require some type of support to keep them from sprawling haphazardly across the ground, tying the vines to a pergola, trellis or other structure with plant ties or string allows for an attractive display of their large flowers, pinching back the vines periodically through the early growing season encourages lateral branching, which results in a thicker, bushier plant, deadheading flowers when their color fades keeps the vines looking fresh while encouraging future blooms
