How to Grow Nandina Bonsai? Detailed Guide to Cultivation Methods and Precautions

Nandina is surely familiar to many people, and we can often see it in daily life. Nandina has high ornamental value, and its leaves are generally the main ornamental point. It is precisely because of this that Nandina attracts many people to grow it. However, before growing it, you still need to have a comprehensive understanding of its cultivation techniques.

How to Grow Nandina Bonsai

1. Soil. To grow Nandina, choose fertile, well-drained sandy soil, preferably slightly acidic. Generally, when growing it, you can mix spoonfuls with leaf mold and other materials to make the soil, and add a little manure soil as base fertilizer.

2. Sunlight. Nandina needs sufficient light and will grow relatively well. In spring, the light is generally suitable, so it can be grown outdoors. In summer, the sunlight is strong, so timely shade is needed. It should be kept in a ventilated place for care. In winter, it is generally grown indoors in a place with sufficient sunlight.

3. Temperature. Nandina likes a warm growing environment. The suitable temperature for growth is generally around 20℃. The winter temperature should not be too low and generally needs to be kept above 8℃. The flowering temperature is generally kept at 24℃——26℃.

Nandina Potted Cultivation Methods and Precautions

I. Cultivation methods:

1. Fertilizing: When potting Nandina, generally apply sufficient base fertilizer. In addition, appropriate topdressing is enough. Generally, during the growing period, fertilize once a month, mainly with thin fertilizer. In May, some potassium fertilizer can be applied.

2. Watering: Watering should be reasonable. Nandina watering is generally carried out according to the climate and weather. In relatively dry times, water frequently to keep the soil moist. In summer, it can be watered every day, and when necessary, spraying can be done. In winter, Nandina is in the dormant period, the plant is dormant, and it does not need too much water; the soil must not be too moist. During the flowering period, Nandina can be watered more to keep the potting soil moist.

3. Pruning. During Nandina care, pay attention to regular pruning. During the growing season, cut off sprouting branches at the base, dense branches, and branches with longer fruit spikes, leaving only one or two lower-growing branches to maintain a beautiful plant shape, while also helping flowering and fruiting.

II. Precautions:

1. Nandina is generally repotted in early spring, which is more conducive to plant growth.

2. After the potted Nandina is brought indoors, it must be cared for in a place with sufficient sunlight. The leaves can be washed with clean water once a week to keep the leaves clean and fresh.

Nandina Pests, Diseases, and Control

1. Red leaf spot disease. Control method: promptly remove diseased leaves and bury them deeply or burn them. If there are many diseased leaves, some slightly infected diseased leaves can first be left for viewing, and after new leaves unfold in the next spring, the diseased leaves can be removed, which can control the source of the pathogen. Before red leaf spot disease occurs in spring, spray thiophanate-methyl wettable powder or mancozeb, and new fungicides can also be sprayed, once every 10 to 15 days, for 2 to 3 consecutive sprays.

2. Anthracnose. Control method: promptly remove diseased leaves and burn them in a centralized way or bury them deeply. In the disease season, spray thiophanate wettable powder once every 10 to 15 days, for 3 consecutive sprays.

3. Inchworm. Control method: manually dig for pupae. Carry this out in places with severe pest damage, in early spring or late autumn. During the adult emergence period, use black light traps to trap and kill them. Before the larvae reach the 4th instar, spray cypermethrin or trichlorfon.

Nandina Propagation Methods

1. Seed propagation. Pick Nandina seeds in autumn, and they can be planted immediately after picking. After sowing the seeds, cover them with plant ash and fine soil. In the second year, the seedlings grow relatively slowly, so do daily care well: loosen the soil, weed, and apply some relatively light fertilizer. After three years of cultivation, they can be transplanted. Transplanting is more suitable after rain in spring. The seedlings should be dug up with soil, so the survival rate of transplanted Nandina will be relatively high.

2. Division propagation. The division method is suitable in spring or autumn. Dig out the entire Nandina plant, shake off the soil from the roots, choose a place where the root junction is relatively narrow, and cut it there. It can be divided into two or three plants. Also cut off some relatively large leaves, and then the divided plants can be planted into the soil. Generally, after we cultivate them for one or two years, they can bloom and bear fruit.

The cultivation method of Nandina is actually not difficult. When growing it, you can start with its growth habits. During cultivation, be sure to control temperature and light. In summer high temperatures, move it indoors. During cultivation, fertilizer, water, and pest and disease control work must be done well, so as to ensure its growth.