Care

To maintain the health of a Sweet Plum tree indoors, it is recommended to provide a cool environment with temperatures ranging from 55 to 60º F. Additionally, the tree should be placed in a location that receives full morning sun and some shade in the afternoon or evening. While the Sweet Plum can tolerate full sun all day, it is important to note that increased watering will be necessary. Gradual acclimation to full sun is advised to avoid leaf burn. Maintaining adequate humidity levels can be achieved by using a humidity tray.

Watering

Watering is a critical aspect of caring for a Bonsai Sweet Plum. The frequency of watering will vary depending on the amount of sunlight and warmth it receives. It is important to avoid allowing the soil to completely dry out as this could lead to wilting and potentially death of the tree. Overwatering is also a common issue that can harm the Bonsai, so it is best to avoid watering when the soil is still moist or cool. A general guideline for watering is to do so every few days, but the actual schedule may vary. To determine when watering is necessary, one can check the moisture level of the topsoil. When it feels dry, it is time to water thoroughly, making sure to thoroughly saturate the soil. One watering technique is to place the entire pot in a sink filled with an inch or two of water, allowing it to absorb the moisture through the holes in the bottom. A moisture meter can also be used to accurately gauge the soil moisture levels.

Fertilizing

Fertilization is a crucial aspect of maintaining the health of a Bonsai, as the nutrients in the soil can become depleted over time with each watering. Fertilizer can be considered the plant’s source of vitamins and minerals. When new growth appears in the spring, it is recommended to begin fertilizing the Bonsai. Options for fertilization include using an organic liquid fertilizer, a chemical fertilizer diluted to half strength, or Miracid. During the growing season, it is recommended to fertilize the Bonsai once or twice a month, and once a month in the winter. It is important to water the tree before fertilizing to avoid stressing the roots, which could lead to burn. It is also advised to refrain from fertilizing a weak or recently repotted tree, as it may cause additional stress to the plant.

Pruning:

The Sweet Plum Bonsai is typically trained through the clip and grow method, utilizing its angular growth and abundant back-budding for ease in shaping. It is important to never remove all new growth at once, and the desired shape can be achieved by determining the overall appearance you aim to create. This species of Bonsai can easily accommodate all classical styles. Regular weekly pinching of new growth is necessary to maintain the desired form.

Wiring:

The Sweet Plum Bonsai may also be trained through wiring, using the thinnest wire that will secure the branch in the desired position. Wiring should be done in the direction of the bend of the branch to prevent looseness. Care should be taken to avoid wrapping the wire too tightly, which can lead to scarring. The wiring process should begin at the base of the tree, wrapping the wire around the trunk to anchor it before moving on to the desired branch. The wire should be monitored for any signs of cutting into the bark, and should be removed immediately if such a situation arises. Re-wiring may be necessary if needed.

Repotting:

The Sweet Plum Bonsai should only be repotted when it becomes fully root-bound. During repotting, it is recommended to limit root pruning to 30% of the root mass and to choose a soil mixture that offers a good balance of moisture retention and drainage. Repotting is necessary to refresh the soil and provide the plant with fresh nutrients. Moderate root pruning should be done during repotting, and the tree should be thoroughly watered after the process. It is recommended to refrain from fertilizing the tree for 3-4 weeks after repotting.