when should you fertilize trees

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  • How often should I fertilize my Trees?

  • Ideally, growing trees should be fertilized throughout the year but a bit differently as trees age. A tree needs larger amounts of nitrogen (N) based fertilizer during the growing season. Nitrogen-based solutions should be applied during the early spring and summer months.

  • When should I fertilize my maple tree?

  • Maple trees usually tell you if they need to be fertilized. The rule of thumb is that if they grow about 6 inches in a year, the soil is good, but if the growth is less than 2 inches, it鈥檚 time to fertilize. Maple trees tend to respond best to slow release nitrogen fertilizers. Spike fertilizers are especially effective for fertilizing maple trees.

  • Should I fertilize my tree stems?

  • Again, read the label. Keep solid or concentrated fertilizer off stems and leaves and adequately water the fertilizer into the soil as that prevents fertilizer burn injury to roots. Stick with the higher ratio nitrogen fertilizers unless your tree is determined to be deficient in potassium or phosphorus (soil test).

  • What is the best time of year to fertilize?

  • Time your application to coincide with active root growth and adequate soil moisture. Trees and shrubs should be fertilized in early spring, and a light fertilizer application can be made in early summer if conditions are conducive to plant growth (that is, reasonable temperatures and soil moisture).

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