Basil is one of the easiest culinary herbs to grow, indoors or out.
This member of the mint family may not be as rugged as many of its cousins, but you’ll be glad you planted basil when it’s dinnertime!
Basil seeds are used in Thai cooking and the leaves are used to make many amazing dishes. Aromatic basil leaves, julienned with mozzarella and fresh tomatoes, make a delightful summer Caprese salad, and what would pesto be without basil?!!?
There are many varieties of basil. Sweet basil (Ocimum basilicum) is the most common, but you can also find these varieties:
How to grow basil
As a tender annual, basil needs temperatures ofe at least 70ºF to grow. Start too soon and you’ll just waste seeds. Basil loves hot weather, but may benefit from a little afternoon shade if your summers are really scorching. I plant mine slightly east of a small apricot tree and the basil does well there. If you are growing basil in a container, be sure to use one that is large enough to hang onto some moisture.
Start seeds indoors, 6-8 weeks before warmer temperatures are expected, to get a big head start on the growing season, increasing yield. You can also start basil from cuttings placed in a glass of water. This is an excellent way to make many plants out of a single plant!
Basil seeds should be planted 1/4” deep. The soil should be kept moist, but not soggy. In 5-7 days, seeds should germinate. It is easy to recognize basil seed leaves because they look like two capital D’s, facing away from each other.
Seedlings need 12-18” between plants to reach full size. A 2-3” layer of mulch place around the young plants will help retain moisture and reduce weeds.
Basil needs 6-8 hours of sunlight a day and it prefers well-drained soil with a pH of 6.0-7.5. Depending on rainfall and temperatures, basil will need to be watered deeply every 7-10 days. Since basil is food, think twice about using any chemical pesticides.
(BTW, ignore basil plants for sale in the grocery store. They look lush and full, but what they really are is overcrowded and root bound. If you try to separate the plants, it will damage the roots too much. Leave them the way they are and they will simply choke themselves to death. Even if they survive, air flow problems can lead to fungal disease. I use organic, non-GMO seeds from High Mowing Seeds.
Basil pests & diseases
Aphids, spider mites, nematodes, cutworms, slugs and snails, mealy bugs, and fungal diseases can all cause problems on basil. Ensuring good air flow between plants and proper watering make a big difference in basil health. Too much water can cause root disease. Allow plants to dry out between waterings. Monitor plants for aphids, slugs and snails. Aphids can be dislodged with a strong stream of water from the hose. Slugs and snails can be handpicked or baited. Adding a ring of wood ashes around each plant can help protect them against cutworms and diatomaceous earth can reduce mealybug damage. Planting nasturtiums nearby can entice aphids away from basil. Aphids prefer nasturtiums, so you get more basil! Row covers can be used to protect basil from many of these pests.
Basil makes an excellent companion plant to asparagus, carrots, sweet peppers, and tomatoes. Apparently, asparagus beetles, carrot flies and tomato hornworms don’t share our love of basil. While there is no scientific proof, many gardeners believe flies, mosquitoes and whiteflies are also repelled by basil. Whether it works or not, I can’t plant enough of this delicious herb!
Snip fresh leaves any time they are needed in the kitchen. If more than a few leaves are needed, or if the plant is getting leggy, cut just above a pair of leaves to stimulate new branching. Regular trimming will keep the plant productive. The basic rule of thumb is to pinch a stem just above a pair of leaves as soon as a stem has 5 or 6 leaves on it. If basil is allowed to go to flower and seed, the leaves may begin to taste slightly bitter. (The bees will love it, though!) Basil flowers are edible and they look lovely in a salad or candied and used to decorate baked goods.
Basil leaves can be dried or frozen. To dry basil, cut the stems and rinse off any dust, insects or microorganisms. Then pat dry and hang the basil stems upside down until the leaves have dried out completely, just as you would with lavender and other herbs. Once the leaves have dried out completely, they can be removed from the stems by rolling them between your hands over a sheet of wax paper. Store in a dark, dry location. (I use spice jars that used to hold something else and that have been thoroughly washed and dried.) To freeze fresh basil leaves, rinse them off, pat dry and remove from the stem. Leaves can be frozen whole (not recommended) or pureed and then frozen in ice cube trays for easy portion control. My very favorite use for basil is pesto, which can transform everyday pasta, chicken, or pork into something truely delicious!
If you have a large container, you can create a lovely miniature herb garden by planting parsley, chives, oregano and basil together. The spiky chives, trailing oregano and bushy parsley and basil make a lovely arrangement that tastes even better than it looks!
You can grow a surprising amount of food in your own yard. Ask me how!