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Mandevilla is a stunning tropical vine known for its vibrant trumpet-shaped flowers and glossy green leaves. With its ability to climb trellises or cascade from hanging baskets, Mandevilla is a favorite for adding a touch of elegance to patios, balconies, and indoor spaces. While it may seem exotic, caring for Mandevilla is relatively straightforward with the right knowledge.

Lighting

Mandevilla thrives in bright, indirect light or full sun. Outdoors, place it in a location where it can receive 6-8 hours of sunlight daily, such as a sunny patio or garden bed. Indoors, position it near a south- or west-facing window to ensure adequate light. If natural light is insufficient, supplement with a grow light to encourage blooming.

Watering

Mandevilla prefers consistent moisture but does not like soggy soil. Water the plant thoroughly when the top inch of soil feels dry, ensuring excess water drains away. During the active growing season (spring and summer), water more frequently to support its vigorous growth. Reduce watering in fall and winter when the plant enters dormancy.

Soil

Use a well-draining, rich potting mix for Mandevilla. A mix designed for tropical plants or one that combines regular potting soil with sand or perlite works well. If growing in a container, ensure it has drainage holes to prevent waterlogging.

Temperature and Humidity

Mandevilla thrives in warm temperatures between 65-85°F (18-29°C) and high humidity. It is not frost-tolerant and should be brought indoors when temperatures drop below 50°F (10°C). Indoors, increase humidity by misting the plant regularly or placing a tray of water and pebbles beneath the pot.

Fertilizing

Feed Mandevilla with a balanced, water-soluble fertilizer every 2-3 weeks during the growing season. A fertilizer with a higher phosphorus content (the middle number in the NPK ratio) can promote blooming. Stop fertilizing during the dormant winter months.

Pruning

Prune Mandevilla to maintain its shape and encourage bushier growth. Trim back long or leggy stems in early spring before new growth begins. Deadhead spent flowers to encourage continuous blooming.

Supporting Growth

As a climbing vine, Mandevilla benefits from support. Use a trellis, stakes, or other climbing structures to guide its growth. If grown in a hanging basket, allow the vines to cascade for a beautiful, trailing effect.

Propagation

Mandevilla can be propagated through stem cuttings. Take a 4-6 inch cutting from a healthy stem just below a node. Remove the lower leaves, dip the cut end in rooting hormone, and plant it in a pot with moist, well-draining soil. Cover the pot with a plastic bag to retain humidity and place it in bright, indirect light. Roots should develop in a few weeks.

Common Issues

• Yellow Leaves: Overwatering or poor drainage can lead to yellowing leaves. Ensure the soil is well-draining and avoid letting the plant sit in water.
• Pests: Mandevilla can attract pests like aphids, spider mites, and whiteflies. Treat infestations with insecticidal soap or neem oil.
• Lack of Blooms: Insufficient light or nutrients may result in fewer flowers. Ensure the plant gets enough sunlight and use a phosphorus-rich fertilizer.

Is Mandevilla Pet Safe?

Mandevilla is considered toxic to pets if ingested. Keep it out of reach of curious cats and dogs to ensure their safety.