Newmarket, Ontario (Head Office)
1175 Stellar Drive, Unit #5
Newmarket, ON L3Y 7B8
- Mon10:00am–6:00pm
- Tue10:00am–6:00pm
- Wed10:00am–6:00pm
- Thu10:00am–6:00pm
- Fri10:00am–6:00pm
- Sat10:00am–4:00pm
- SunClosed
$0.00 CAD
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GardenPRO Perennial & Container 14-14-16 Slow Release is a controlled release fertilizer for perennials and container plants, designed to provide season-long nutrition in gardens, planters, and baskets.
This slow release formula is positioned as a proven 3–4 month option, giving you a predictable window of steady nutrient availability through the main part of the growing season. If you maintain mixed perennial borders and container displays at the same time, this product keeps your fertilizer choice simple: one perennial and container fertilizer that matches both planting styles without switching products.
The balanced 14-14-16 NPK is stated right in the product name and supports general, all-around plant nutrition rather than pushing a single outcome. That makes it a practical fit when your goal is consistent growth and dependable performance across a range of perennial types and container arrangements. It’s also a straightforward choice for gardeners who want a slow release fertilizer that’s easy to shop by category: controlled release fertilizer, perennial fertilizer, and container plant fertilizer.
GardenPRO Perennial & Container 14-14-16 Slow Release is also clearly aligned with spring timing for garden maintenance. For many gardens, spring is when perennial beds and seasonal container plantings get refreshed, and a 3–4 month controlled release window fits neatly into that early-season planning. Because it’s intended for both landscape and container settings, it’s well suited to patios and entry planters alongside in-ground perennial beds, helping you keep nutrition consistent across the spaces you actually look at every day.
GardenPRO Perennial & Container 14-14-16 Slow Release is a good fit for gardeners who want a controlled release, slow release fertilizer for all perennials and container plants, especially when you prefer a proven 3–4 month season-long nutrition approach with a simple, balanced 14-14-16 profile.
Use in spring to deliver season-long nutrition in garden and landscape areas.
When to apply: Spring
Rate: Incorporate 0.5 kg (1.1 lb) per 10 m² (100 sq. ft.) into the soil.
Finish: Water after applying to help activate the slow-release feeding.
Great for potted perennials and mixed planters.
50 cm (20 in.) container: Topdress with 150 g (about 1 cup).
How: Sprinkle evenly over the soil surface, mix lightly into the top layer, and water well.
Hanging Baskets
30 cm (12 in.) basket: Topdress with 30 g (2 tbsp).
How: Spread evenly, lightly work into the surface, and water well.
Covers approximately 36 m² (360 sq. ft.) or feeds about 60 baskets sized 30 cm (12 in.).
Warning – Important Safety Information
This product may cause mild skin irritation and eye irritation. Avoid unnecessary contact with skin, eyes, and clothing. Use only as directed.
General safety precautions
Read and follow all instructions on the product label and any accompanying documentation before use. Keep out of reach of children and pets. Do not ingest. Avoid breathing vapours, mist, or dust that may be generated during handling or use.
Wear appropriate personal protective equipment (PPE), such as protective gloves, long sleeves, long pants and closed-toe footwear. When there is a risk of splashing or airborne particles, use safety glasses or other suitable eye and face protection.
First aid – skin contact
IF ON SKIN OR HAIR: Remove contaminated clothing immediately. Rinse skin with clean water for several minutes, then wash with mild soap and water. If irritation or redness develops and persists, seek medical attention. Wash contaminated clothing before reuse.
First aid – eye contact
IF IN EYES: Rinse cautiously with clean water for several minutes, keeping eyelids open. Remove contact lenses if present and easy to do. Continue rinsing. If irritation persists, obtain medical advice.
First aid – ingestion and inhalation
IF SWALLOWED: Rinse mouth thoroughly with water. Do not induce vomiting unless instructed by a medical professional. Seek medical attention if you feel unwell.
IF INHALED: Move the person to fresh air and keep them comfortable for breathing. If coughing, breathing difficulty, dizziness or other symptoms occur, seek medical assistance.
Storage and handling
Store this product in its original closed container, in a cool, dry and well-ventilated area. Protect from extreme temperatures and direct sunlight. Keep container tightly sealed when not in use.
Avoid release to drains, natural waterways or outdoor soil. Dispose of unused product and empty containers in accordance with local regulations and the directions on the label.
Important: If medical advice is needed, keep the product label or container available. Always follow the specific instructions and safety recommendations provided by the manufacturer. This safety notice is intended as general guidance and does not replace official label directions or documentation.

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