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Give your indoor plants long-lasting nutrition with Miracle-Gro® Indoor Plant Food Spikes – Slow-Release (6-12-6). Specially formulated for indoor potted plants, these convenient fertilizer spikes deliver balanced nutrients directly into the root zone, where plants absorb them gradually over time.

Each application—using the recommended number of spikes for your pot size—provides continuous feeding for up to 2 months, helping promote healthy root development, lush green foliage, and vibrant overall growth. With no measuring or mixing required, simply insert the spikes into the soil and replace them every two months for ongoing nutrition.

The Indoor Plant Problem-Solver Shopping Guide

Buy this when your indoor plants are:

• Growing slowly despite receiving proper light and watering.
• Producing weak root systems after repotting.
• Flowering less than expected.
• Losing nutrients quickly from frequent watering.
• Needing an easy, low-maintenance feeding solution.
• Requiring long-lasting nutrition without weekly fertilizing.

Indoor Plant Benefits:

• Strong Root Development: The elevated phosphorus content helps establish stronger root systems, improving nutrient and water absorption for healthier plants.

• Continuous Nutrition: Gradually releases nutrients for up to 2 months, providing steady feeding that supports balanced, uninterrupted growth.

• Healthy Foliage & Flowers: Balanced nitrogen and potassium encourage vibrant green foliage, stronger stems, and improved flowering performance without excessive vegetative growth.

Instructions of Use

☘ Application: Make a hole halfway between the plant stem and the edge of the pot. Insert the fertilizer spike with the pointed end facing downward and cover completely with soil.

☘ Watering: Water thoroughly immediately after application and continue your normal watering routine.

☘ Replacement: Replace the spikes with new ones every 2 months for continuous feeding.

☘ Storage: Store in a cool, dry place. Keep the package tightly sealed and out of reach of children and pets.

• 7.5-10cm (3”-4"): 2 Spikes
• 12.5-15cm (5”-6"): 3 Spikes
• 17.5-20cm (7”-8"): 4 Spikes
• 22.5-25cm (9”-10"): 5 Spikes
• 27.5-30cm (11”-12"): 6 Spikes

☘ Activation: Water the soil thoroughly after insertion to activate the nutrient release. Replace with fresh spikes every 60 days for continuous growth.

☘ Storage: Keep in a cool, dry place, securely out of reach of children and pets.  (Click to expand)  

Why It's a Must-Have?

Miracle-Gro® Indoor Plant Food Spikes offer one of the easiest and most reliable ways to keep indoor plants consistently nourished. Instead of providing a quick burst of nutrients that can quickly wash away, these premium spikes release nutrients gradually over time, supplying your plants with exactly what they need between waterings.

The phosphorus-rich 6-12-6 formula strengthens root systems while supporting healthy flowering, and the balanced nitrogen and potassium promote lush foliage and sturdy growth. Because nutrients are delivered directly into the root zone, plants receive consistent feeding with minimal waste and a reduced risk of fertilizer burn.

Whether you’re caring for a single houseplant or an extensive indoor collection, Miracle-Gro® Plant Food Spikes simplify fertilizing while delivering dependable, professional-quality results.

☘ Feeds continuously for up to 2 months.

☘ Supports stronger roots and healthier flowering.

☘ Promotes lush green foliage and sturdy stems.

☘ No mixing, measuring, or messy liquid fertilizers.

☘ Controlled slow-release formula helps reduce fertilizer burn when used as directed.

☘ Ideal for tropical plants, flowering houseplants, foliage plants, and most indoor potted plants.