New Guinea Impatiens

New Guinea Impatiens (Impatiens hawkeri)

Scientific Name: Impatiens hawkeri

Common Names: New Guinea Impatiens, Tropical Impatiens

Native to: Native to Papua New Guinea

Lighting Requirements: Partial to full shade. New Guinea Impatiens prefer bright, indirect light and can tolerate some direct sunlight, but they perform best in shaded or partly shaded areas, especially in hotter climates.

Height: 12 to 24 inches 

Width: 12 to 18 inches 

Winter Look: Typically grown as an annual in colder climates, dying after the first frost. 

Seasonal Interest: Spring to fall, with peak blooming in summer

Drought Tolerance: Moderate. New Guinea Impatiens prefer consistently moist soil but can tolerate short periods of drought once established.

Soil Requirements: Well-draining, fertile, and moist soil with high organic content

pH Range: 5.5 to 6.5 (slightly acidic to neutral)

Hardiness Zones: USDA Zones 10 to 11 (grown as an annual in colder zones)

Deer Resistance: Low to Moderate. Deer may occasionally nibble on New Guinea Impatiens, particularly in the absence of other food sources.

Attracts: Bees, butterflies, and hummingbirds

Potential Issues: Susceptible to aphids, whiteflies, mealybugs, and fungal diseases such as powdery mildew. Overwatering can lead to root rot, and poor air circulation can contribute to disease problems.

Notes: New Guinea Impatiens are known for their bright, showy flowers that come in various colors, including red, pink, purple, white, and orange. These plants are prized for their vibrant blooms throughout the growing season. New Guinea Impatiens are more sun-tolerant than traditional impatiens and are often used in containers, hanging baskets, or shaded garden beds. They require moist, well-drained soil and should not be allowed to dry out completely. New Guinea Impatiens are also great for adding color to shaded areas where other plants may struggle.

These guys really do brighten up a shaded area! The lighter colors show up a bit better (red seems to fade into the background). The bright orange one was very impressive in my heavily shaded areas.