Скачать или смотреть When Do I Fertilize My Japanese Maples?

The best time to fertilize Japanese maples is early spring, when the trees are just starting to leaf out. Fertilizing during this period helps promote healthy growth, but it's crucial to stop by mid to late May. This timing prevents excessive activity in the fall and winter months, which can lead to poor winterization and potential damage.

Fertilizers typically have release periods ranging from immediate to 180 days or more. Using a fertilizer with a long release period that extends into the winter can keep the tree too active and increase the risk of freeze damage and diseases. It’s advisable to stop using granulated fertilizers by May, though liquid fertilizers can be used with caution later in the season if needed.

In colder zones, like Zone 6b in western North Carolina, it's particularly important to stop fertilizing well before winter to avoid poor fall color and damage from late growth. Trees should be allowed to go dormant and properly prepare for winter.

When purchasing fertilizer, opt for balanced formulas like 10-10-10, which provide adequate nutrients without overstressing the plant. Be cautious with specialized fertilizers for Japanese maples, as they may not always provide the necessary nutrients effectively.

If a Japanese maple is newly purchased and was fertilized by the nursery, it may not need additional fertilization that year. It's often best to wait a season before applying more fertilizer to avoid redundancy and potential over-fertilization.

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