Chestnut Tree Planting Guide: Latest Techniques and Key Points Explained

The chestnut is the fruit of the Fagaceae family and enjoys the reputation in China as the “king of dried fruits,” with a cultivation history in China of more than 2,500 years. Chestnuts are extremely rich in nutrients, and the sugar and starch content in chestnut fruit is very high, with benefits for tonifying the kidneys and strengthening the spleen and for building up the body. Many people in China now grow chestnuts, but there are some key planting points for chestnut trees that many people overlook. Below, let the editor introduce the key technical points for planting chestnut trees!

1. Plowing the woodland

Chestnut orchards should be plowed appropriately, usually with the intensity controlled according to the age of the chestnut trees. Young orchards are mainly shallow-plowed, while fruiting orchards should be deep-plowed with the planting holes enlarged to add fresh soil, improve the soil, and promote root growth. The deep plowing depth for mature orchards must not be less than 30 cm, and care must be taken during deep plowing not to damage the roots. During deep plowing, a thorough cleanup should be carried out to ensure that soil and water conservation facilities are intact, prevent soil and water loss, and remove harmful substances from the soil.

2. Rational fertilization

Chestnut fertilization should mainly use organic fertilizer, applying as little chemical fertilizer as possible, and if possible not using chemical fertilizer at all. This is because chemical fertilizer can harm the roots of the fruit trees, and in severe cases burn the roots and trigger various pests and diseases. When fertilizing, apply fertilizer in a ring around the tree canopy, first digging the fertilizer trenches well. Control the amount of fertilizer according to tree age, and immediately after fertilizing, earth up the soil to improve the soil's fertilizer-holding capacity, which helps the roots absorb nutrients and strengthens the vigor of the fruit trees.

3. Bark scraping and whitewashing

Bark scraping and whitewashing is mainly aimed at fruit trees aged 10 years or more, and generally begins after harvest, but temperature must also be taken into account; in areas with lower temperatures, it should be delayed until early spring. The rough bark, peeling bark, and similar parts on fruit trees are the main places where pests and disease fungi overwinter, so timely bark scraping can disrupt the overwintering of pathogens and reduce the disease rate of the fruit trees. The scraped bark should be gathered and taken out of the orchard to be burned, and then the lower part of the trunk should be whitewashed to prevent termites or pathogens from invading.

4. Shaping and pruning

Because the chestnut tree is a large tree type, shaping and pruning work is very important for chestnut trees. For trees around 5 years old, the sprouting shoots and lower skirt branches at the base of the fruit tree should be pruned off. Then remove dead, dried-out, and pest- or disease-damaged branches, and promptly thin out overlapping branches that are too dense or too long. This prevents the fruit tree from becoming too closed-in, which would affect chestnut flowering and fruiting. For old trees, the old branches should be pruned off, and then new main branches should be cultivated to encourage the formation of a new canopy, restore vigor, and increase yield.

5. Freeze protection management

After chestnut trees enter winter, their vigor gradually weakens and they begin to drop leaves. Especially in areas where winter temperatures fall below zero, chestnut trees may suffer freeze damage. This affects the overwintering of chestnut trees, so before the chestnut trees drop their leaves, we should loosen the soil around the tree plate and cover it with plastic film, then apply sufficient base fertilizer and earth up the soil in time. If the soil is too dry, it should also be watered appropriately to improve the cold resistance of the chestnut trees and ensure they can successfully overwinter.

The above is a brief introduction to the key technical points of chestnut tree planting. Growing chestnut trees is not as simple as everyone thinks; chestnuts grow relatively slowly, and it may take about 4-5 years to enter the full fruiting stage. So there is a certain amount of skill involved in planting them, and I hope everyone will understand these cultivation basics well before planting. That is all for today's introduction. This article is for reference only. Thank you for reading and your support.