Planting Arborvitae Fertilizer: A 3-Step Guide to Soil Preparation and Application

Planting arborvitae trees can enhance your landscape with their evergreen foliage and pyramidal shape. To ensure their optimal growth and health, fertilizing them is crucial. This comprehensive guide will walk you through the essential steps of preparing your soil and applying the right fertilizer for your arborvitae.

Step 1: Soil Preparation

Test Your Soil: Before applying any fertilizer, test your soil to determine its pH level, nutrient composition, and texture. A soil test will provide valuable insights into the specific needs of your soil, helping you tailor your fertilization plan.

Amendments: Based on the soil test results, you may need to amend your soil to improve its fertility and drainage. Arborvitae trees prefer well-drained, slightly acidic soil with a pH between 5.0 and 6.5.

• Organic Matter: Incorporate organic matter, such as compost or peat moss, to increase soil fertility, water retention, and drainage.
• Sulfur: If your soil has a high pH level, adding sulfur can help lower it to the desired range.
• Sand: If your soil is heavy and compacted, mix in sand to improve drainage.

Step 2: Fertilizer Selection

Nitrogen-Phosphorus-Potassium Ratio: Choose a fertilizer with a balanced nitrogen-phosphorus-potassium (NPK) ratio. A balanced fertilizer provides all the essential nutrients for healthy arborvitae growth.

Slow-Release Fertilizers: Use slow-release fertilizers that gradually release nutrients over time, minimizing the risk of over-fertilization and promoting steady growth.

Recommended NPK Ratio: For arborvitae fertilization, a balanced fertilizer with an NPK ratio of 10-10-10 or 12-12-12 is recommended.

Step 3: Fertilizer Application

Application Timing: Fertilize arborvitae trees in early spring before new growth begins. This allows the nutrients to be available during the peak growing season.

Application Method: Broadcast the fertilizer evenly around the base of the tree, taking care not to touch the trunk. Avoid over-fertilizing, as excessive nutrients can damage the roots.

Recommended Application Rate: Apply fertilizer according to the manufacturer's instructions or the following general guidelines:

• Young Trees (Under 5 Years): 1/2 pound of fertilizer per tree
• Mature Trees (Over 5 Years): 1 pound of fertilizer per tree

Water In: After applying the fertilizer, water the tree thoroughly to help dissolve the nutrients and promote absorption.

Tips and Tricks

• Use a fertilizer specifically formulated for evergreens or conifers.
• Avoid using fertilizers with high levels of nitrogen, as this can promote excessive growth and susceptibility to pests.
• Mulch around the base of the tree with organic matter to retain moisture and regulate soil temperature.
• Monitor the growth and appearance of your arborvitae regularly for signs of nutrient deficiencies or nutrient burn.

Common Mistakes to Avoid

• Over-Fertilizing: Over-fertilizing can damage the roots of arborvitae trees and inhibit growth. Follow the recommended application rates to prevent this.
• Fertilizing at the Wrong Time: Avoid fertilizing during the summer or fall, as this can stimulate new growth that may not have enough time to harden off before winter.
• Applying Fertilizer Directly to the Trunk: Applying fertilizer directly to the trunk can burn the bark and harm the tree. Spread the fertilizer evenly around the base.
• Neglecting Annual Fertilization: Fertilizing arborvitae trees annually is essential for maintaining their health and vigor. Regular fertilization helps ensure they have the nutrients they need for long-term growth and development.

Conclusion

By following these steps and heeding the tips and tricks, you can provide your arborvitae trees with the essential nutrients they need to thrive. Proper soil preparation and fertilizer application will promote healthy growth, vibrant foliage, and enhanced longevity for these popular landscape additions.

Useful Tables

Table 1: Soil pH Recommendations for Arborvitae Trees

Table 2: Recommended NPK Ratio for Arborvitae Fertilization

Table 3: General Fertilizer Application Rates for Arborvitae Trees

Table 4: Common Nutrient Deficiencies in Arborvitae Trees