Learn how to grow nemesia, growing nemesia is super easy. It blooms quickly after planting and display colorful beautiful flowers.
USDA Hardiness Zones: 9-10, *grown as annual in other zones
Propagation Method: Seeds, cutting
Soil Type: Slightly acidic to neutral
Height: Nemesia’s height remain between 20 to 50 cm.
Flower color: From white to golden-yellow, pink, cherry, violet and blue. There are also varieties with bi-color and patterned flowers.
The genus includes 50 species. Plants have stems, raised and quite branched. The leaves are sessile and alternately arranged on the shoots. Flowers are double-lipped with a spur in small pansy like appearance and lobelia like size.
Nemesia floribunda: It has a height of 20-30 cm, white flowers, sometimes with deep-purple stripes.
Nemesia strumosa: It has different colored flowers, relatively large, a popular variety.
Nemesia versicolor (multicolored): The highest of all the cultivated species, reaches a height of about 35-50 cm.
It has slightly larger and beautiful flowers and blooms very profusely.
Planting nemesia in sunny spot promotes more bloom, plant it on the position where it’ll receive at least 6-7 hours of sun. If you’re growing it in subtropical and tropical zone, save it from the afternoon sun.
The secret for prolific nemesia blossoms is soil. Soil should be moist and slightly acidic. Even a momentary lack of moisture can affect the inhibition of flowering.
However, it is very sensitive to water logging so while planting, prepare soil with high proportion of fine gravel or vermiculite for good drainage.
Water nemesia regularly and deeply as plant loves moist soil. In warm climates or where the plant is planted in exposed windy condition, take care about watering, not letting the plant dry out completely.
Fertilize mature nemesis with a slow-release fertilizer, applying once in a growing season or apply water-soluble fertilizer twice in a month when plant is in active growth.
Pinch off the growing tips of young plants to encourage more dense growth.
After mass flowering prune that flowering shoot and wait for the emergence of new side shoots that will bloom in a mass again.
Pruning of the flowering stems is important to get more flowers.
If growing in warm climate cut back half of the plant, when the plant starts to look saggy.
Sow nemesia seeds in late spring or summer or when all the dangers of frost pass away and temperature starts to range near 60-75 F (around 15-22 C), this is the optimum germination temperature of nemesia seeds.
In sub tropical and tropical climate, best planting time is fall and winter, when temperature stables around the optimum range written above.
Seeds will germinate in 5-10 days after sowing. Transplant them when 3 real leaves of plant will appear, leaving 12-15 cm. (4-6”) space for every plant in flower as it looks beautiful in flower beds and creates a riot of color.
It is also suitable for balcony, terrace and patio gardens as growing nemesia is possible in hanging baskets, small pots and decorative bowls and urns because of its small height.
How to Grow Nemesia in Pot
To grow nemesia in pot or hanging basket, choose pot with sufficient drainage, use good potting, additionally you can add vermiculite. Remember that nemesia prefers moist soil but it does not like wet feet so avoid waterlogging. Place your pot or basket on a less windy spot so that it’ll not dry out quickly.