Nemesia is a genus of annuals, perennials and sub-shrubs which are native to sandy coasts or disturbed ground in South Africa. We offer the annual cultivars which are popular with gardeners for borders, beds and containers. Hardy in USDA zones 2-10, Nemesia grows 10-18 inches high and will add plenty of color to landscape areas. Typically, blooms are white, red, pink, blue or orange. This implant likes full sunlight, but can tolerate some shade.
Nemesia plants require at least 6 hours of sun each day to promote blooming. Choose a sunny location and plant in moist, well draining, slightly acidic soil. Plant only when the threat of frost has passed. This plant likes moist soil. Lack of moisture will affect flower production; however, too much water can cause root rot. Nemesia plants like cooler temperatures. In the heat of summer, Nemesia can actually die back.
Nemesia is a flower that thrives in moist soil. If you have windy, dry conditions, this plant may struggle to grow. Preferring a bit of humid conditions, regular watering is a must. It is best to keep the soil evenly moist. This can be tricky, as too much water can lead to root rot. When watering, avoid getting the foliage wet. Water at the base of the plant, slowly and evenly.
Fertilizer is not required for the growth of this plant. An application of fertilizer once each growing season can help it grow. Use a slow-release fertilizer for a mature plant. A water-soluble fertilizer is best to use when the plant is actively growing. Water well after each application.
To encourage repeated blooming, prune the dead flowers off at the stem This will stimulate the production of new flowers and produce a full look to the plant. If the Nemesia becomes saggy or leans too far one way, you can cut the plant back to shape it. Do not cut back more than half of the plant.
Caring For Nemesia in Pots
Nemesia is a great flower to plant in pots or window boxes. Choose a container that has good drainage holes. Find a location that will get at least 6 hours of sun each day. Use a high quality potting soil mixed with a bit of sand or perlite. This will help with good drainage. Water well after initial planting. Nemesia likes moist soil, so water frequently when the top inch of soil feels dry.
Winter Care for Nemesia
Nemesia is a summer annual in northern climates. It will bloom from spring to the first frost. This plant is not cold tolerant, and will not survive when temperatures drop. In warmer climates, perennial Nemesia can be kept over winter by bringing it indoors for the cooler season. A covered porch, greenhouse, or a windowsill are good options for this plant. Water sparingly.