Mandevilla Vine Care: Complete Growing Guide for Tropical Beauty

Mandevilla vines captivate with showy, trumpet-shaped flowers in red, pink, white, and yellow—blooming twice yearly (early summer and early fall). These Central/South American tropical climbers have surged in popularity for their vigorous growth and spectacular floral display.

Growing Requirements

• Temperature: 70-85°F (21-29°C) ideal
• Light: Partial shade with bright light
• Soil: Rich mix: 1 part sand, 1 part humus, 1 part potting soil (excellent drainage)
• Container: Pot with drainage hole + trellis for vine support

Planting

• When: Spring
• Method: Plant vine root cuttings in 5-inch deep holes in prepared soil
• Spacing: 3 feet between plants—vigorous growers need room
• Water: Thoroughly after planting

Watering Schedule

• New plants: Weekly to keep soil moist
• Established (spring/summer/fall): 3 times weekly, slow morning watering
• Critical: Allow soil to dry between waterings—avoid root rot
• Winter: Minimal—just prevent complete drying

Fertilizing

• Formula: High-phosphorus 10-20-10 NPK
• Frequency: Every 2 weeks during growing season
• Method: Water before and after application for absorption
• Caution: Never let fertilizer touch plant parts—damages roots
• Winter: No fertilizer (dormant, can't absorb nutrients)

Pruning and Repotting

• Prune: Remove dead/damaged/diseased parts. Shorten long vines for appearance and bloom quality. Reduces fungal risk.
• Repot: Every 2-3 years in late winter. Refresh with 1:1:1 potting soil, sand, moss. Gently remove old soil from roots. Use container few inches larger.

Critical Winter Care

Not frost-tolerant! Bring indoors when nights drop below 50°F (10°C). Cannot survive below 45°F (7°C).

1. Inspect: Check leaves, roots, stems for pests. Treat with insecticide if found
2. Transplant: Move to container with peat moss, sand, potting soil mix
3. Light: 6 hours indirect sunlight indoors
4. Temperature: Near heater for warmth
5. Water: Weekly max—just prevent total dryness
6. Fertilizer: None during dormancy
7. Spring return: Move outdoors after all frost danger passes

Climate Exception

If your winter nights stay above 50°F, mandevilla can remain outdoors year-round with minimal care.

Why Gardeners Love Mandevilla

Naturally pest-resistant, vigorous bloomer, and manageable with basic care—just remember the winter protocol in cold climates!