Plant Nursery Slow Release Fertilizer: A Guide to Using 12-6-6 and 14-14-14
As a plant nursery owner, providing your plants with the right nutrients is crucial for their health and growth. Slow-release fertilizers are an excellent option for nurseries because they release nutrients gradually over time, preventing nutrient burn and ensuring a steady supply of essential elements. Among the most popular slow-release fertilizers for plant nurseries are 12-6-6 and 14-14-14.
Benefits of Slow-Release Fertilizers
- Controlled nutrient release: Gradually releases nutrients over several months, preventing nutrient burn and nutrient deficiencies.
- Improved nutrient uptake: Nutrients are released directly to the roots, reducing leaching and maximizing nutrient absorption.
- Reduced leaching: Minimizes nutrient runoff, protecting the environment and reducing the need for excessive fertilization.
- Long-lasting: Provides sustained nutrition for several months, reducing the frequency of fertilization.
- Easy application: Can be broadcast, banded, or incorporated into the soil for easy and convenient application.
When to Use 12-6-6 and 14-14-14
- 12-6-6: Ideal for the early stages of plant growth, providing a boost of nitrogen for rapid vegetative development.
- 14-14-14: Suitable for all stages of plant growth, providing a balanced supply of nitrogen, phosphorus, and potassium for overall health and vigor.
How to Apply Slow-Release Fertilizers
- Determine the application rate: Refer to the product label for recommended application rates based on soil type and plant species.
- Broadcast or band the fertilizer: Spread the fertilizer evenly over the soil surface or band it along the drip line of plants.
- Incorporate the fertilizer: If possible, incorporate the fertilizer into the soil to a depth of several inches to promote root contact.
- Water thoroughly: Water the soil deeply after applying the fertilizer to activate the release process.
Tips and Tricks
- Use high-quality fertilizers: Choose slow-release fertilizers from reputable manufacturers that adhere to industry standards.
- Consider soil testing: Conduct soil tests to determine the specific nutrient needs of your plants.
- Avoid over-fertilization: Follow the recommended application rates to prevent nutrient burn.
- Monitor plant growth: Observe your plants regularly for signs of nutrient deficiencies or excesses and adjust fertilization accordingly.
- Combine with other fertilizers: Supplement slow-release fertilizers with water-soluble fertilizers or organic amendments for a more comprehensive fertilization program.
Common Mistakes to Avoid
- Applying too much fertilizer: Over-fertilization can lead to nutrient burn, stunted growth, and reduced plant vigor.
- Ignoring soil pH: Soil pH affects nutrient availability. Adjust soil pH if necessary to ensure optimal nutrient uptake.
- Improper application: Broadcasting fertilizer over frozen or dry soil can reduce nutrient release and effectiveness.
- Inconsistent application: Fertilize plants consistently to avoid nutrient fluctuations that can stress plants.
- Applying fertilizer too close to sensitive plants: Avoid applying fertilizer directly to the base of young or delicate plants.
Step-by-Step Approach to Using Plant Nursery Slow Release Fertilizer
- Read the product label carefully. Determine the recommended application rate and follow instructions for safe and effective use.
- Prepare the soil. Aerate the soil and amend it with organic matter if needed to improve nutrient retention.
- Apply the fertilizer. Broadcast or band the fertilizer evenly over the soil surface or incorporate it into the soil.
- Water thoroughly. Water the soil deeply to activate the release process and promote nutrient uptake.
- Monitor plant growth. Observe your plants regularly for signs of nutrient deficiencies or excesses and adjust fertilization accordingly.
Tables
Fertilizer Type |
Nitrogen |
Phosphorus |
Potassium |
12-6-6 |
12% |
6% |
6% |
14-14-14 |
14% |
14% |
14% |
18-6-12 |
18% |
6% |
12% |
20-10-10 |
20% |
10% |
10% |
Plant Type |
Recommended Fertilizer |
Container plants |
12-6-6 or 14-14-14 |
Bedding plants |
14-14-14 or 20-10-10 |
Trees and shrubs |
12-6-6 or 18-6-12 |
Perennials |
14-14-14 or 18-6-12 |
Soil Type |
Application Rate |
Sandy soil |
0.5-1 lb per 100 sq ft |
Loamy soil |
1-2 lb per 100 sq ft |
Clay soil |
2-4 lb per 100 sq ft |
Nutrient Deficiency |
Symptoms |
Nitrogen |
Yellowing leaves, stunted growth |
Phosphorus |
Purple or bronze leaves, poor root development |
Potassium |
Weak stems, brown leaf edges |