Basil plants will do well with a small dose of fertilizer every 4-6 weeks. You can use a water-soluble type fertilizer or a granular product.Click to see full answer. In this manner, what is the best fertilizer for basil plants?Provide a balanced fertilizer, such as half-strength 14-14-14 or 10-10-10, if you prefer a plant with less vigorous growth but more flavorful leaves. Give basil the fertilizer once per week after plants grow at least two pairs of true leaves.Additionally, what nutrients do basil plants need? Basil likes rich, moist, but well-drained soil with a pH of 6 to 7. Test your soil, or simply improve it by adding plenty of organic nutrients from compost, blood meal, or cottonseed meal. Similarly, how often should you fertilize Basil? Fertilizing Basil Plants If you’re wondering when to feed basil growing in containers, the answer is once every four to six weeks for indoor plants and every two to three weeks for basil in outdoor pots. Instead of a dry fertilizer, use a water-soluble fertilizer mixed at half strength.Are coffee grounds good for basil plants?If you start to see flowers at the top of your basil plant, pinch it off. This ensures healthy beautiful plants. You could either buy some plant food or use coffee grounds to fertilize with instead.