When to Plant Tree Onion Bulbils

Tree onions are perennial plants that produce small bulbils instead of seeds. These bulbils can be used to propagate new plants. Here are some tips on when to plant tree onion bulbils for best results.

Spring Planting

Tree onions can be planted in the spring once the soil has thawed out and temperatures have warmed up. It's important to wait until the ground has drained out any excess moisture before planting. This planting time is ideal for areas with milder winters, where the ground doesn't freeze over for extended periods of time.

Fall Planting

Fall planting is also an option for tree onions. This is especially true for colder climates where the ground freezes over in the winter. Planting in the fall allows the bulbils to get established before the ground freezes, and then they will resume growth in the spring. Fall planting is recommended 2-4 weeks before the first expected frost.

Growing Conditions

Tree onions prefer full sun and well-draining soil. They can tolerate a range of soil types, but they do best in loamy, well-drained soil. Tree onions are also fairly drought-tolerant, but do require occasional watering during dry periods. In addition, they don't like to be planted in compact soil or in areas that are constantly damp.

Spacing

When planting tree onion bulbils, space them about 1-2 inches apart and about 1 inch deep in the soil. If planting in rows, space the rows about 1-2 feet apart. This will give the bulbils enough space to grow and establish roots, without being packed too tightly.

Care and Maintenance

Once planted, tree onions require minimal care and maintenance. They don't usually require fertilization, though a light application of compost in the fall can help boost their growth in the spring. Mulching around the plants can also help retain moisture and suppress weeds. Remove any weeds or competing plants from around the trees to avoid competition for nutrients and moisture.

Harvesting

Tree onions can be harvested in the fall, once the tops of the plants have died back. The bulbils can be dug up and replanted, or they can be used for cooking. They have a milder flavor than regular onions and can be used in soups, stews, and other dishes. The green tops can also be used like scallions.

In conclusion, tree onions are a low-maintenance and versatile plant to grow in your garden. Planting tree onion bulbils in the spring or fall can yield good results, as long as they are planted in well-draining soil with good sun exposure. With a little bit of care and maintenance, you can enjoy fresh, homegrown onions year after year.