Serissa

Family. Rubiaceae.

Origin. Southeast Asia.

Description. Serissa is a small shrub with small dark green leaves, erect, strong stems forming a dense crown. The leaf blades are thin, up to only 2 cm long. Variegated varieties may have yellow or white spots, veins or creamy white leaf edges. The flowers are small - only up to 1.5 cm in diameter, but very attractive, white or pink, there are double varieties. Buds appear throughout most of the growing season. Because this species tolerates pruning well, it is often used in bonsai culture. When damaged, the leaves often emit an unpleasant odor.

Height. Up to 120 cm.

Care at home

Temperature conditions

Resistance to low and high temperatures depends on the specific species. Some cultivars do not tolerate heat well. Most varieties do not tolerate frost, and when the temperature drops, the bushes may lose all their leaves. In winter, it is advisable to move the pot to a cool room with a temperature of 8 - 10 °C.

Lighting

The bush feels good in partial shade, but it would be better to provide this plant with a place where it can receive sun in the morning. 

Cultivation

Serissa can become unkempt as it ages. Prune this shrub regularly after flowering to maintain a compact, neat shape. Pinch out the tips of young shoots to create a bushy crown. Remove old, wilting buds to prolong the flowering period. These plants appreciate being outdoors during the warmer months.

Substrate

Nutritious and well drained.

Feeding

Feed once every two weeks during the growing season, from spring to autumn, with liquid organic fertilizer. If you decide to use inorganic fertilizers for fertilizing, dilute them to half the recommended dosage. 

Purpose

An extremely ornamental plant that is sometimes used as a bonsai.

Flowering time

Serissa blooms from early spring to late autumn. 

Air humidity

High humidity can be maintained with a room humidifier or by placing the pot on a tray of damp pebbles. If you use humidity sprays, ensure good air movement around the bush, while avoiding cold drafts.

Soil moisture

During the warm season, water frequently and deeply, but allow the top layer of soil to dry out slightly between waterings. In winter, watering should be reduced. 

Transfer

Serissa needs to be replanted approximately every two years. This plant tolerates replanting well most of the year, but it is best to do it in early spring, as new growth begins. After replanting, water the soil generously and place the bush in a shaded area for several weeks.

Reproduction

Stem cuttings, which can be obtained by pruning in spring or summer. Cuttings can be rooted in water first. 

Pests and diseases

Serissa tends to shed its leaves at the first sign of stress - lack or excess of moisture; lack of lighting; with too sudden a change in temperature. Do not water a plant that has lost its leaves - wait for new ones to grow. Rotting due to waterlogging and stagnation of water. 

Of the harmful insects, whiteflies, spider mites, aphids, scale insects, and mealybugs can pose a certain danger.