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How to Fertilize: Transform Your Garden’s Growth

At Goebbert’s Farm & Garden Center, we know that a truly great garden isn’t just planted. It’s nourished. If you want fuller blooms, bigger harvests, and healthier plants, you’re in the right place. Understanding how to fertilize is the single best way to unlock your garden’s true potential, transforming it from average to amazing.

By mid-season, your plants are working hard. They’re pushing out blossoms, forming fruits, and fighting off summer stress. Consistent, correct feeding is the key to keeping that momentum going all season long.

First, What Is Fertilizer? Understanding N-P-K

Before you can feed your plants correctly, it helps to know what you’re feeding them. At the heart of every fertilizer are three key macronutrients, always listed in the same order (N-P-K).

A “balanced” fertilizer might have a 10-10-10 ratio. A “blossom booster,” like the one we recommend below, will have a much higher middle number (Phosphorus) to encourage flowers.

 Jessica fertilizing NPK
  • N – Nitrogen: Promotes lush, green leafy growth. Think of it as the fuel for “up” growth.
  • P – Phosphorus: Encourages strong root systems, plus abundant flowers and fruit. Think of it for “down” (roots) and “out” (blooms/fruit).
  • K – Potassium: Manages overall plant health, hardiness, and disease resistance. Think of it for “all-around” well-being.

Why Fertilizing Matters

Proper fertilization gives your plants exactly what they need when they need it most. Without added nutrients, plants can stall, produce fewer flowers, or develop pale, yellowing leaves.

A good feeding schedule helps plants:

  • Produce significantly more buds and flowers
  • Develop stronger, deeper root systems
  • Increase the yield and size of fruits and vegetables
  • Resist pests, diseases, and heat stress

Choosing Your Fertilizer: Liquid vs. Granular

You’ll generally find two types of fertilizers, each with its own benefits:

  • Liquid (Water-Soluble) Fertilizers: These dissolve in water and act quickly. Perfect for weekly feedings, especially for containers and annuals.
  • Granular (Slow-Release) Fertilizers: These pellets release nutrients over time. Ideal for mixing into soil beds at the beginning of the season.

How to Fertilize: A Simple Guide

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Read the Instructions

Follow the package directions for mixing and frequency. Every fertilizer is different.

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Water First, Feed Second

Never fertilize dry soil. Water thoroughly first to avoid burning roots.

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Mix Your Fertilizer

If using a liquid fertilizer like Jack’s Classic Blossom Booster, dissolve as directed in a watering can or sprayer.

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Apply Evenly

Water at the base of each plant, soaking the root zone well. Avoid spraying leaves directly in full sun.

Tailoring Your Approach: What to Feed Different Plants

three orange and yellow flowers in a pot for the fertilizing flowers icon

For a Riot of Color: Fertilizing Flowers

We recommend Jack’s Classic Blossom Booster. Its high phosphorus content encourages abundant blooms and long-lasting color.

Feed once a week for vibrant results. 

Perfect for:

  • Hanging baskets
  • Window boxes
  • Garden beds full of petunias, zinnias, or geraniums
a potted tomato plant for how to transform your gardens growth with tomato fertilizer

For a Bountiful Harvest: Fertilizing Vegetables & Fruits

Tomatoes and peppers are heavy feeders. Use a phosphorus-rich blend to support fruit development.

  • Feed weekly once fruiting begins.
plant in pot for fertilizing herbs icon

For Flavorful Leaves: Fertilizing Herbs

Herbs need a light touch. Overfeeding can reduce flavor and aroma.

  • Use a balanced liquid fertilizer at half-strength
  • Feed every 2–3 weeks
  • Avoid fertilizing right before harvest

Check out our full Herb Plant Guide.

Common Fertilizer Mistakes to Avoid

  • Overfeeding: Too much can burn roots. Stick to the instructions.
  • Fertilizing Dry Soil: Always water first.
  • Wrong Formula: Match N-P-K to plant needs. Lawn fertilizer won’t help your tomatoes!

Don’t Forget!

Potted plants lose nutrients quickly. Plan to fertilize containers at least once per week.

For help choosing fertilizers and setting up container gardens, explore our Custom Planting Services.

And don’t forget to join our Loyal Garden Club for exclusive deals and tips.

view from street of Goebbert's farm during spring flowers season
Jessica finds ways to transform her garden with fertilizer

Need Help Picking the Right Fertilizer?

Visit our Spring Garden Center and talk with our expert staff. Whether you’re growing juicy tomatoes or a simple pot of basil, we’ll help you fertilize with confidence.