Planting Arborvitae Fertilizer: The 5 Secrets to Thriving Green Giants

Arborvitae: The Perfect Privacy Plant

Arborvitae (Thuja spp.) are popular evergreen shrubs prized for their dense foliage and ability to create a natural privacy screen. Native to North America, these hardy plants require minimal care but benefit greatly from proper fertilization. By following the right steps, you can ensure your arborvitae flourish for years to come.

5 Arborvitae Fertilizer Secrets

1. Choose the Correct Fertilizer: Select a slow-release fertilizer specifically formulated for acid-loving plants. Look for a balance of nitrogen, phosphorus, and potassium (NPK), such as 10-10-10 or 12-6-6.

2. Determine the Right Amount: Apply approximately 1 pound of nitrogen per 1,000 square feet of planting area. For a 4-foot-tall arborvitae, this translates to 2-3 cups of fertilizer.

3. Time it Right: Fertilize in early spring (March-April) and late fall (September-October) for best results. Avoid fertilizing during the heat of summer.

   

4. Apply Wisely: Sprinkle the fertilizer evenly around the base of the arborvitae, keeping it a few inches away from the trunk. Water thoroughly after application.

5. Avoid Overfertilization: Too much fertilizer can damage arborvitae roots and burn foliage. Follow the instructions on the fertilizer label carefully.

   

The Importance of pH

Arborvitae thrive in slightly acidic soil with a pH between 5.5 and 6.5. If your soil is too alkaline, the nutrients in the fertilizer may become unavailable to the plant. To test your soil's pH, use a home pH testing kit or send a sample to a soil testing laboratory.

If your soil is too alkaline, consider amending it with sulfur or aluminum sulfate to lower the pH. Follow the instructions on the amendment package carefully to avoid over-acidification.

Benefits of Fertilizing Arborvitae

• Enhanced Growth: Fertilization provides essential nutrients for vigorous growth and dense foliage.
• Improved Resistance: Healthy arborvitae are better equipped to resist pests and diseases.
• Vibrant Color: Proper fertilization maintains the rich green color of arborvitae foliage.
• Extended Lifespan: With proper fertilization, arborvitae can live for decades, providing privacy and beauty for generations.

Table 1: Recommended Fertilizers for Arborvitae

Effective Strategies for Fertilizing Arborvitae

• Mulch Around the Plants: A layer of mulch around arborvitae helps retain moisture, regulate soil temperature, and suppress weeds. Use an organic mulch such as bark chips or shredded leaves.
• Water Regularly: Regular watering is essential for arborvitae growth. Water deeply at the base of the plant, avoiding overhead watering which can promote disease.
• Prune Young Plants: Pruning young arborvitae encourages bushier growth and promotes the development of a dense privacy screen.
• Protect Plants from Pests and Diseases: Inspect arborvitae regularly for pests and diseases. Treat any infestations or infections promptly to prevent damage.

Step-by-Step Guide to Fertilizing Arborvitae

1. Determine the planting area and calculate the amount of fertilizer needed.
2. Choose the appropriate fertilizer and apply it evenly around the base of the arborvitae.
3. Water the area thoroughly after application.
4. Monitor the arborvitae for signs of growth and nutrient deficiencies.
5. Fertilize again in late fall to prepare for winter.

Tips and Tricks for Planting and Growing Arborvitae

• Choose a Sunny or Partially Sunny Location: Arborvitae prefer full sun to partial shade.
• Plant in Well-Drained Soil: Arborvitae are not tolerant of standing water, so choose a planting site with well-drained soil.
• Amend Soil with Organic Matter: Adding compost or other organic matter to the soil helps improve drainage and soil fertility.
• Plant at the Correct Depth: When planting arborvitae, ensure the root ball is level with the surrounding soil.
• Space Plants Properly: Allow for enough space between arborvitae to promote air circulation and prevent disease.

By following these tips and tricks, you can create a thriving privacy screen with healthy, vibrant arborvitae that will enhance your landscape for years to come.

Table 2: Arborvitae Spacing Guide

Table 3: Common Pests and Diseases of Arborvitae

Table 4: Comparison of Arborvitae Varieties