How to Grow Malus micromalus? Detailed Guide to Cultivation Methods and Precautions

As a crabapple variety unique to China, Malus micromalus has very high landscaping and ornamental value. It grows well in the dry regions of northern China and is a commonly cultivated fruit tree and ornamental tree. Its tree form is upright, its flowers are dense, and there are many cultivated varieties. It is deeply loved by people, so what are its cultivation methods? Below, the editor will take everyone through them.

Cultivation Methods for Malus micromalus

1. Planting: Malus micromalus is generally planted in the ground. The best time is before bud break in early spring or after leaf fall in early winter. Keeping the root system of the seedlings intact when they leave the nursery is key to survival. Generally, large seedlings should be balled with soil, while small seedlings should retain some native soil depending on the situation. After planting, tending and management should be strengthened, and the soil should often be kept loose and fertile.

2. Watering and Fertilizing: During the spring and summer growing seasons, Malus micromalus needs appropriately more watering. During hot summer high temperatures, watering should be timely and sufficient; if water is lacking, leaf edges are prone to scorching. After the weather cools in autumn, gradually reduce watering, and after leaf fall in winter, water even less to prevent root rot. However, because Malus micromalus is a deciduous tree species, it is not suitable to spray too much water on the branches and leaves. Malus micromalus likes fertilizer and can be given appropriately more, but attention should be paid to using nitrogen, phosphorus, and potassium in combination. If too much nitrogen fertilizer is used, it can easily cause lush branches and leaves but sparse flowering. After flowering in spring, mainly apply nitrogen fertilizer to promote branch and leaf growth. In summer and autumn, apply more phosphorus and potassium fertilizer to benefit flower bud differentiation and ensure abundant flowers and bright colors. Fertilizers can include cake fertilizer, human manure and urine, bone meal, chicken manure, fishy water, and so on.

3. Pruning: Malus micromalus has strong sprouting ability and grows quickly, so attention should be paid to shaping and pruning it. From after leaf fall in winter to before bud break in spring, remove miscellaneous branches such as dead branches, diseased and pest-damaged branches, thin and weak branches, crossing branches, overlapping branches, and overly dense branches. After flowering in spring, according to shaping needs, appropriately shorten overly long branches to promote side branch formation, increase the number of flower buds, and ensure abundant flowering the following year. In addition, after sprouting in spring, excessive, overly dense, and poorly positioned buds can be removed.

4. Pest Control: For Malus micromalus, attention should be paid to controlling pests such as scarab beetles, leaf rollers, aphids, bagworms, and red spiders, as well as diseases such as rot and scab. Control can include removing diseased trees, burning diseased branches to reduce sources of pathogens, spraying lime sulfur in early spring or brushing lime agent on the trunk; at the initial onset, cut intersecting knife marks about 0.5 cm on the diseased spots, reaching the xylem, and then spray or apply fungicide.

Propagation Methods for Malus micromalus

1. Grafting: Malus micromalus grafting is divided into bud grafting and branch grafting, and the rootstock is mostly seedlings of the same genus. Bud grafting of Malus micromalus is suitable in August, and branch grafting is suitable in spring.

2. Root burial method: In early spring from February to March, cut the roots of mature crabapple plants into lengths of about 15 cm, lay them flat and bury them in soil, cover with 7-8 cm of soil, water thoroughly, and then keep the soil moist regularly.

3. Division method: Division of Malus micromalus is suitable in early spring in March, before sprouting. Small seedlings will sprout around older Malus micromalus plants. Cut the small seedlings off from the mother plant together with their roots and transplant them. Appropriate shading is needed, and the soil should be kept moist.

Growth Habits of Malus micromalus

It likes light, is cold-resistant, avoids waterlogging, avoids overly humid air, and is relatively drought-tolerant. It is not strict about soil requirements, but it grows best in fertile, loose, and well-drained sandy loam. During growth, watering, fertilizing, and pruning should be combined in comprehensive management.

Precautions for Malus micromalus

1. Do not expose it to direct strong light, so as to avoid damaging the leaves. In winter, place it in a sunny, wind-sheltered spot for care. In dry and hot summer seasons, pay attention to ventilation and shade, and do not let it receive sunlight all the time.

2. When pruning Malus micromalus, you can cut off worthless long branches and thin, weak branches each year, and shorten the remaining long branches. When the plant enters a senescent state, some larger branches can be cut off so that the branches retract. During the growing period, among the newly grown branches, thin and weak branches need to be removed. Except for retaining relatively robust branches with suitable directions, senescent branches can all be cut off.

Crabapple flowers are elegant and unrestrained, and when in bloom they look like brocade. Since ancient times, they have been a famous flower appreciated by both refined and popular tastes, and have long been known as the “god among flowers,” “imperial consort among flowers,” and “noble among flowers.” The above content covers some of the main knowledge about cultivating Malus micromalus, and I hope it can help everyone