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5 Different Types of Fertilizer for Growing Bigger, Better Basil

basil growing at different stages

Supercharge your basil efforts with this age-old gardening hack which is adding fertilizer. Here are the five best fertilizers for basil.

1. Nitrogen-rich fertilizers

Basil is a heavy feeder and requires a steady supply of nitrogen to support its rapid growth. The solution is to use fertilizers that are high in nitrogen, such as ammonium nitrate or urea.

RAW- Nitrogen, Plant Nutrient for Treating Deficiencies, Increase Plant Growth During vegative Stage, Plant Feeding Supplement, for Indoor Outdoor Use, Hydroponics- 2 oz


2. Organic fertilizers

If you prefer organic fertilizers, try out compost, manure, or bone meal. These fertilizers release nutrients slowly over time and are less likely to burn your plants. You can make this stuff yourself as well.

Espoma Organic Bone Meal Fertilizer 4-12-0. All-Natural Plant Food Source of Nitrogen and Phosphorus For Organic Gardening. For Bulbs & Other Flowering Plants. 4 lb. bag.

3. Balanced fertilizers

For a more balanced approach, use a fertilizer that contains a mix of essential nutrients, such as nitrogen, phosphorous, and potassium. Look for the abbreviation NPK. The ratio of these nutrients will vary depending on the specific needs of your basil plants.

Fox Farm 6-4-4, 1-Pint FX14092 Grow Big Liquid Concentrate Fertilizer, Soil NPK 6-4, White

4. Water-soluble fertilizers

Water-soluble fertilizers, also known as liquid fertilizers, are easy to use and are absorbed quickly by basil plants. They are a good choice for basil plants that are grown in containers or for those that need a quick boost of nutrients.

Southern Ag PowerPak 20-20-20 Water Soluble Fertilizer with micronutrients (5 LB)

5. Slow-release fertilizers for basil grown in the ground

Slow-release fertilizers are a good choice for basil plants that are grown in the ground, since they release nutrients slowly over a period of time. This helps prevent nutrient imbalances and reduces the risk of overfertilization (something easily done if you’re not careful).

Osmocote Smart-Release Plant Food Plus Outdoor & Indoor, 1 lb.

That’s it. Take your basil growing efforts to the next level. Experiment with different types to see what works best for your basil. Actually testing this stuff is kind of fun; it’s what I call gamified gardening.

Now that you know your fertilizer options, learn how to use fertilizer to get the best basil harvest ever.

What’s the single best fertilizer for growing basil indoors?

If you must choose one, go with the balanced fertilizer.  It’s tough to know the single best because there are many variables involved such as the soil you use, how much sun your basil gets, container size and so on.  Start with a balanced fertilizer and try others from there.

What’s the single best type of fertilizer for growing basil outside?

Generally, your best fertilizer option for growing basil outside is the slow-release fertilizer listed above as number five.