Impatiens walleriana, commonly referred to as impatiens and bizzie lizzies, are succulent, herbaceous perennials that bloom in an array of colors. These flowers bloom continuously throughout the year, from early spring through late fall. The blooms are slender with a flat appearance, and the oblong foliage ranges from light to dark green, often with a bronze red cast. It is not difficult to grow Impatiens walleriana.
Plant the impatiens in the early spring, just after the final frost. Select a planting location that provides partial-to-full shade. Plant the impatiens in well-drained, organically-rich soil. Mix the native soil with an equal amount of peat compost. Plant the impatiens about 6 inches apart to promote taller plants. Position the plants 8 to 10 inches apart for bushier spreads.
Water the impatiens regularly, providing 1 inch of water per week. Adjust the watering schedule for varied weather conditions. Increase the schedule during hot, dry summer months. Decrease the schedule during periods of rainfall. Do not overwater.
Fertilize the impatiens with a water-soluble application that includes high levels of phosphorous such as 10-54-10 (NPK). Apply the first application during the planting process. Continue the applications every one to two weeks throughout the growing season.
Encourage branching and increased blooms. Pinch back old, spent flowers. Promote bushier, fuller plants by pinching the spent blooms back approximately 6 inches.
Inspect the impatiens regularly for signs of pests. Look for signs of aphids, trips, slugs and spider mites. Treat infestations immediately to avoid unsightly blooms. Use an insecticide that is designed for perennial plants and includes elimination and prevention properties.
Check the impatiens for signs of disease. Inspect for spots, mold and root rot. Treat the fungal diseases with a fungicidal spray. Speak with a local nursery or horticultural specialist for diagnosis and selection assistance.