Eggplant is a very common vegetable that's part of the nightshade family. These easy to grow veggies are quite popular in many gardens around the world. In this article, organic gardening expert Logan Hailey takes you through each step you'll need to follow to successfully plant, grow, and care for eggplant in your garden.
Whether cooking up a cheesy eggplant parmesan, roasted baba ganoush dip, or a simple grilled side, eggplant is a summer staple. These glossy purple vegetables are widely used in Italian, French, Indian, Mediterranean, Chinese, and Japanese dishes. In fact, they come in a vast range of colors and shapes that we don’t often see in the supermarket.
Eggplant (or “aubergine” in Europe) is simple to grow and a joy to eat. This warm-weather garden crop bears heavily and withstands even the hottest summers. In the kitchen, eggplant has a mild flavor that can readily adapt to the oil and seasoning of any dish. The spongy, creamy texture is reminiscent of squash.
Requiring just over two months to mature, eggplant is a fast-growing and rewarding nightshade vegetable. It’s the perfect veggie to add to your summer abundance of zucchini, tomatoes, and bell peppers. If you’ve been wanting to try your hand at growing one of the dozens of unique purple, white, pink, striped, or green varieties, spring is the best time to get started. Let’s take a closer look at everything you’ll need to get started growing eggplant in your own garden.
History and Cultivation
Most of us think of eggplant as a shiny purple rounded fruit sliced up in lasagna or eggplant parmesan. But long before eggplant made its way to Italy, this nightshade-family crop grew wild across Africa for millions of years. It is suspected that it was first domesticated in Asia and later spread across the globe as an economically important food plant.
What is Eggplant?
Eggplant is a warm-weather vegetable known by the Latin name Solanum melongena. The edible portion of is technically a fruit. S. melongena is a tender perennial in its native Africa and Southeast Asia. However, it is most commonly grown as an annual in temperate gardens. As a member of the Solanaceae, or Nightshade family, they are closely related to potatoes, tomatoes, peppers, and tobacco.
Also known as aubergine or Guinea squash, eggplant is an upright bushy plant that often has spines along its stem. The leaves are large and somewhat fuzzy, often with a purplish hue.
Eggplant flowers are vibrant purple and hang like pendants downward. From the flowers grow egg-or-banana-shaped fruits with glossy skins that can be purple, fuschia, white, yellowish, or striped, depending on the variety. The European varieties tend to be the plump, egg-shaped types whereas Asian and Middle Eastern varieties are elongated and banana-shaped.
Eggplant is used in a vast variety of global cuisines. It’s most well known for the signature eggplant parmesan of Italy, the Middle Eastern relish dip called baba ganoush, Greek moussaka, and the spicy Indian eggplant curry called baingan bharta.
Where Does Eggplant Originate?
Recent genetic sequencing of eggplant (or aubergine as Europeans call it) has revealed that sometime in the last couple million years, it split into two distinct lineages. One of the wild African type. The other into the ancestor of what we now know as domesticated Asian and European eggplants.
Believe it or not, the spread of eggplants out of Africa and into Asia was likely facilitated by African elephants and impala feeding on the Solanaceous fruits and pooping out their seeds as they migrated!
As the elephants carried on with their eggplant feasts, Southeast Asian and Indian farmers began domesticating aubergine plants several thousand years ago. The antiquity of eggplant is shown by its wide range of names in Sanskrit, Bengali, Hindustani, and Chinese languages. The oldest known records of eggplant come from a 5th-century Chinese cookbook.
These ancient eggplants were likely far more similar to the heirloom Thai, Chinese, and Japanese varieties we see at local farmer’s markets today. They were long, slender, and curved somewhat like a banana, with violet, fuschia, white, or dark purple skin.
As we’ll explore below, the diversity of Asian eggplants far surpasses that of European types. The delicately sweet flavor and denser texture of Asian types have converted even the most adamant eggplant-haters into aubergine lovers.
When Did Eggplant Come to the Western World?
Fast forward to the 16th through 18th centuries, when Moors carried the eggplant westward. Upon its arrival and establishment in Spanish cuisine, many Spaniards began calling them berengenas, or “apples of love.” This was based on the Medieval idea that eggplant could be used in a sort of love potion. Meanwhile, other European botanists called them Mala insana. This translates to “mad apple, because they thought eating the nightshade would make you go insane.
A similar sort of folklore traveled with eggplant to the Americas in the 1500s. But the crop did not catch on. For centuries, colonists were very suspicious of eggplant because it was a member of the Nightshade family (along with tomatoes and potatoes). Nightshades have many toxic relatives. Many Americans thought that eggplants, tomatoes, and potatoes were poisonous and even associated with the devil.
It wasn’t until the mid-1800s that large purple Italian eggplants finally became popular amongst European gardeners and later amongst commercial vegetable producers. Interestingly, eggplant was primarily considered an ornamental plant before it became accepted as a food crop.
Finally, sometime around the 1960s, the smaller, more slender Asian varieties made their way to the United States. Though we were quite behind in discovering the abundance of shapes, sizes, flavors, and colors of eggplant, modern gardeners have a whole world of eggplant samplings at their fingertips.
Propagation
Eggplant is usually propagated from seed. The flattened nightshade seeds look very similar to tomato seeds because they are actually from the same genus (Solanum). They are extremely heat-loving plants, so the seeds need plenty of warmth to germinate.
For this reason, it’s best to start seeds indoors in seedling trays. If you don’t have a greenhouse or seed starting setup, consider purchasing starts from a local nursery to make your life a little easier.
How to Seed Eggplant
Eggplant seeds should be started indoors in flats or cell trays about 6 to 8 weeks prior to planting outside. Fill your trays with a high-quality well-drained potting mix and sow 1-3 seeds per cell about ¼” deep. Lightly cover with soil and maintain consistent moisture until germination.
The soil temperature should be between 80-90° until the seedlings emerge (use a temperature probe to check). A heating mat is the easiest way to ensure even germination. After the seeds come up, the soil temperature can be reduced to around 70°F. Anything colder than this will result in poor germination or stunted plants.
After the seedlings have 1-2 sets of true leaves, thin to one plant per cell. If you started in smaller plugs, you can up-pot the seedlings to 3” pots. This allows them to get larger and stronger before transplanting. Keep the ambient temperature above 70°F for adequate establishment.
After 6 to 7 weeks, eggplant starts should be large enough to prepare for planting. Be sure to harden off your seedlings about one week before planting out in the garden. You can do this by reducing the amount of water (but still maintaining adequate moisture) and lowering their temperature exposure to around 60°F. You can move plants to a sheltered outdoor space under row cover to allow them to get accustomed to night time temperatures.
Planting
Eggplants aren’t ready to be planted in the garden until several weeks after the last spring frost. In some regions, you should wait until early summer. The weather needs to be thoroughly settled and consistently above 60°F.
Eggplants are very tender and sensitive to the cold. Too much cold exposure will significantly reduce plant vigor and yields. Practice companion planting with your eggplants to help with pest and disease prevention.
How to Grow Eggplant
Eggplants are heavy feeding, heat-loving crops that absolutely love rich, fertile soil and consistent water. Once established, the plants aren’t super needy or time-consuming. As long as you take the time to give eggplants the proper conditions to thrive, they will reward you with loads of glossy fruits.
Maintenance
Some gardeners prefer to prune and stake up their eggplants so that they don’t fall over, however, I have never found this to be necessary. Sometimes the plants will be weighted down by a heavy fruit set, but they shouldn’t topple over unless you are in an exceptionally windy area or your soil is extremely loose. In any case, wooden stakes with twine or small tomato cages will do.
Read More
Search