What do you need to know about spring management of sweet cherries?

From bud break to harvest, sweet cherries have a short growing season, making spring management all the more critical. Let’s explore the key practices and precautions for managing sweet cherry trees in the spring.

1. Pruning and orchard cleanup

In principle, cherry tree pruning is carried out primarily during the growing season. However, due to practical production constraints, when in-season pruning falls short of expectations, pre‑bud pruning becomes necessary to make adjustments. Pre‑bud pruning should minimize removal of large branches to reduce wounds and prevent gumming, focusing instead on thinning overly dense and competing shoots. This work is performed from late February to mid-March. For mature trees, the main objectives are to regulate fruit load, open up light penetration, and address insufficient illumination within the canopy. Consider removing some upright, vigorously growing interior branches that obstruct light; for trees with excessive flower bud formation, prune away a portion of the basal and backside of weak, slender fruiting spurs. During the training phase, prioritize spreading and angling branches to moderate tree vigor and promote flower initiation, aiming for a branch‑to‑trunk ratio of 1:4 to 1:3. Following pruning, promptly collect and dispose of pruned branches and fallen leaves—burying the leaves deeply and removing the branches from the orchard—to help reduce sources of pests and diseases.

2. Watering and Fertilizing

From bud break to harvest, sweet cherries have a short growing season, concentrated nutrient requirements, and relatively high nutritional demands. For orchards that received insufficient fall fertilization, apply an organic fertilizer—such as Nongda Bio Organic Fertilizer “One Top Three”—before bud break to enhance fruit quality, and supplement with an active humic‑acid compound fertilizer while incorporating micronutrient amendments (high‑calcium, potassium, and magnesium) to lay a solid foundation for better fruit set and reduced fruit drop. In orchards that were well‑fertilized in the fall, use a high‑nitrogen fertilizer—e.g., “Bacteria All‑in‑One” plus a highly active humic‑acid compound fertilizer with an N‑P‑K ratio of 18‑15‑12S—and irrigate thoroughly immediately afterward. During watering, apply a composite microbial inoculant such as “Gui Gen Dao Di” to help lower soil temperature and extend the flowering period. Additionally, after fruit set, foliar spray with “Huangjin Lu” to improve leaf function, prevent fruit cracking, and further enhance fruit quality.

3. Pest and Disease Control

Orchard sanitation: Before the end of March, carry out orchard cleanup by digging trenches to bury weeds, fallen leaves, and other debris underground, thereby eliminating overwintering sources of pathogens and pests. This practice can also help control some overwintering generations of rose aphids and mulberry white scale.
Spray a 5°Bé lime-sulfur formulation; in early March, when the buds begin to swell, apply the 5°Bé lime-sulfur solution evenly and thoroughly. Ensure complete coverage both on the trees and on the soil surface—this will significantly reduce the severity of disease and pest damage for the current year.
4. Cold-Weather Protection in Early Spring

Spring’s “returning cold” weather can adversely affect fruit tree flowering and pollination. Before bud break and flowering (February–March), apply Aiguo‑zhe Fruit Tree Nutrient Antifreeze to the main trunks and branches, or, on the afternoon before a frost, spray the entire orchard with water—while doing so, you can also apply a high‑potassium fertilizer to promote bud break, flowering, and fruit set—or use smoke from straw or wheat chaff.

5. Flowering Period Management

Auxiliary pollination to enhance fruit set: Introducing bees during the flowering period can improve pollination efficiency. Place the bees in an appropriate location within the orchard 1–2 days before flowering to allow them to acclimate to the environment.
Improving fruit quality: During the young‑fruit development stage following flowering, which coincides with the vigorous growth of new shoots, nutrient requirements are particularly high. Timely nutrient supplementation is essential to promote fruit growth and development. For varieties prone to severe fruit cracking, apply the foliar calcium–magnesium fertilizer “Huangjinlu” promptly; additionally, carefully manage the vigorous growth of new shoots to minimize nutritional competition between shoot development and fruit maturation.