Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
osmocote water plant fertilizer Osmocote 21-4-8 Slow Release Fertilizer 8-9 Month ReleaseOsmocote 21 4 8 Slow Release Fertilizer (8 9 Month Release) Long Lasting Controlled Release Plant Fertilizer for Professional & Residential Use Osmocote 21 4 8 Slow Release Fertilizer is a professional grade granular fertilizer formulated to provide steady nutrient availability for up to 8 to 9 months. Designed for use in container gardens, landscape beds, ornamental plants, nursery production, greenhouse growing, and foliage applications, this
Osmocote 21-4-8 Slow Release Fertilizer (8-9 Month Release)
Long-Lasting Controlled-Release Plant Fertilizer for Professional & Residential Use
Osmocote 21-4-8 Slow-Release Fertilizer is a professional-grade granular fertilizer formulated to provide steady nutrient availability for up to 8 to 9 months. Designed for use in container gardens, landscape beds, ornamental plants, nursery production, greenhouse growing, and foliage applications, this controlled-release formula helps maintain healthy plant growth while reducing the frequency of fertilizer applications.
The advanced coated granule technology gradually releases nutrients over time as soil temperatures change, allowing plants to receive a more uniform supply of essential nutrients throughout the growing season. This balanced fertilizer blend supports lush green foliage, improved root development, stronger plant vigor, and enhanced overall plant appearance across a wide range of growing conditions.
Product Features & Benefits
| Feature | Advantage |
|---|---|
| Extended 8-9 Month Feeding | Provides season-long nutrition with fewer applications |
| Balanced 21-4-8 Formula | Supports vigorous top growth and healthy plant development |
| Controlled Nutrient Availability | Helps deliver a more consistent feeding program |
| Includes Essential Micronutrients | Contains magnesium, sulfur, iron, manganese, and zinc |
| Efficient Nutrient Use | Helps reduce unnecessary nutrient loss through leaching |
| Professional-Grade Fertilizer | Suitable for commercial growers, landscapers, and home gardens |
| Versatile Application Methods | Can be incorporated into soil mixes or applied as a surface treatment |
| Reliable Performance | Designed for dependable nutrient release under varying environmental conditions |
Guaranteed Analysis
| Plant Nutrient | Percentage |
|---|---|
| Total Nitrogen (N) | 21% |
| Available Phosphate (P₂O₅) | 4% |
| Soluble Potash (K₂O) | 8% |
| Magnesium (Mg) | 1.1% |
| Sulfur (S) | 8.0% |
| Iron (Fe) | 0.70% |
| Manganese (Mn) | 0.20% |
| Zinc (Zn) | 0.08% |
Recommended Uses
Osmocote 21-4-8 Slow Release Fertilizer is widely used for:
-
Nursery stock production
-
Ornamental shrubs and flowering plants
-
Landscape installations
-
Outdoor container plants
-
Greenhouse crops
-
Foliage plants
-
Commercial landscaping programs
-
Decorative garden beds
Its extended feeding period makes it especially useful for applications that require long-term nutrient availability and reduced maintenance.
Application Information
| Application Area | General Use Rate |
|---|---|
| Landscape Beds | Approximately 9.5–24 lbs. per 1,000 sq. ft. |
| Container Growing | Adjust rates according to plant size and container volume |
| Potting Media Incorporation | Blend evenly into growing media before planting |
| Surface Application | Apply evenly around the root zone and water thoroughly |
Important: Application rates may vary depending on crop type, soil composition, irrigation practices, climate, and desired growth response. Always follow product label instructions for proper application guidance.
Professional Controlled Release Performance
Osmocote 21-4-8 is engineered to provide gradual nutrient release rather than the rapid nutrient availability commonly associated with traditional water-soluble fertilizers. This controlled feeding process helps encourage more uniform plant growth while lowering the risk of nutrient surges and fertilizer stress when applied according to label directions.
Its long-lasting feeding cycle and dependable nutrient delivery make Osmocote 21-4-8 an excellent fertilizer choice for professional growers, greenhouse operations, landscapers, nurseries, and home gardeners seeking reliable plant nutrition with fewer fertilizer applications throughout the season.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy