Mandevilla Red – Overview

• Scientific name: Mandevilla sanderi (or related hybrids)

• Common names: Rocktrumpet, Dipladenia (closely related)

• Flower color: Deep red, trumpet-shaped blooms

• Category: Tropical perennial climber

• Growth habit: Fast-growing vine; can also be kept shrub-like with pruning

• Ideal for: Balconies, trellises, pergolas, railing planters, warm climates

Care Guide

Light

• Loves full sun to bright partial sun.

• Needs at least 4–6 hours sunlight daily to bloom heavily.

Water

• Keep soil slightly moist but never soggy.

• Water deeply when the top 3–4 cm is dry.

• More watering during summer, less in monsoon/winter.

Soil

• Light, well-draining mix:
  ✔ Garden soil
  ✔ Cocopeat
  ✔ Perlite or sand
  ✔ Compost

• Mandevilla hates heavy or soggy soil.

Temperature

• Thrives in 20–32°C.

• Protect from cold drafts (below 15°C growth slows).

Fertilizer

• Feed every 2 weeks (growing season) with:

  • Bloom booster (high P + K)

  • Or balanced NPK like 19-19-19

• Add organic compost once a month.

Humidity

• Enjoys moderate humidity (typical Indian climate is good).

• Avoid water on leaves at night.

Pruning

• Best time: Late winter or early spring.

• Cut back leggy vines by 30–50%.

• Always prune above a leaf node.

Common Problems

• Yellow leaves: Overwatering / poor drainage

• Few flowers: Low light or high nitrogen

• Whiteflies / spider mites: Common in hot, dry periods (treat with neem oil)

• Leaf drop: Sudden temperature change