GARDENWISE 13-13-13 Slow-Release Granular Fertilizer 3 Qt — All-Purpose NPK for Lawns, Vegetables & Flowers, Feeds Up to 8 Weeks

GARDENWISE 13-13-13 Slow Release Granular Fertilizer is an all-purpose granular plant food that delivers balanced N-P-K nutrition over weeks to support lawns, vegetables, flowers, shrubs, and trees.

This 3-quart formula supplies equal parts nitrogen, phosphorus, and potassium in a slow-release form so plants receive steady nourishment with fewer applications. The fine granules spread evenly across soil or turf and gradually release nutrients for up to eight weeks, helping encourage healthy foliage, stronger roots, and improved resilience for a wide range of outdoor plants.

How will this fertilizer affect my lawn and turf?

Applied correctly, the 13-13-13 balance feeds both leaf growth and root development to produce greener, thicker turf without rapid, short-lived flushes. The slow-release mechanism reduces the need for weekly feedings and lowers the risk of burning from sudden nutrient surges.

• Feeds grass steadily for up to eight weeks
• Encourages uniform color and density in lawns
• Fine granules spread easily by hand or drop spreader
• Suitable for common turf types including St. Augustine

Can I use it on vegetables, roses, and flowering plants?

Yes — the balanced nutrients support both flowering and fruiting plants by delivering phosphorus for root and bloom development, nitrogen for leafy growth, and potassium for overall plant vigor. Use as directed for garden beds, containers, and ornamental plantings to support steady seasonal growth without overfeeding.

• Works for tomatoes, peppers, herbs, and culinary vegetables
• Supports deeper roots and improved bloom set for roses
• Appropriate for flower beds and mixed perennial borders
• Can be used in pots when applied at container-safe rates

How do I apply the granular formula for best results?

Even distribution and proper calibration of your spreader or hand application are key. Lightly water after applying to activate the slow-release granules and avoid applying directly to plant crowns or foliage to reduce any risk of irritation.

• Broadcast evenly with a drop or rotary spreader, or apply by hand
• Water thoroughly after application to begin nutrient release
• Repeat only after the manufacturer’s recommended interval, typically every 6–8 weeks
• Follow package rates for lawn area or container size to prevent overapplication

Is this product safe for shrubs and trees, and when should I feed them?

The slow-release granules are suitable for established shrubs and trees when used according to label instructions. Apply in the growing season when roots are actively taking up nutrients — typically spring to early summer — and avoid late-season high-nitrogen feedings that can stimulate tender growth before dormancy.

• Apply in spring for active root uptake and again mid-season if needed
• Spread evenly beneath the drip line, avoiding trunk contact
• Good for evergreens, fruit trees, and ornamental shrubs
• Helps build resilience and supports seasonal recovery after pruning

Who is this for: Gardenwise 13-13-13 Slow Release Granular Fertilizer is aimed at homeowners, hobby gardeners, and landscapers who want a straightforward, balanced fertilizer that reduces application frequency while supporting a wide variety of outdoor plants. It's a practical choice for small yards, container gardens, mixed flower beds, and anyone seeking an all-purpose feed to maintain healthy turf, vibrant blooms, and robust vegetable crops without specialized formulations.

Ingredients

Total Nitrogen (N): 13.00% Available Phosphate (PO5): 13.00% Soluble Potash (K2O)13.00%