What Part of the Plant Is an Onion Bulb? A Gardener’s Guide (2026)

The Egyptian Walking Onion, also known as the tree onion or topset onion, is one of the most fascinating and low-maintenance vegetables you can grow. This heirloom perennial produces small bulbs at the top of the stalk instead of flowers, which then bend to the ground and replant themselves - hence the name "walking." If you want a nearly foolproof crop that gives you both green onions and storage bulbs with minimal work, this is it.

In terms of real-world performance, these onions live up to the claim of being easy. They thrive in full sun with moderate watering and aren't picky about soil. The critter resistance is a huge plus - deer and rabbits typically ignore them, unlike many other garden plants. You can harvest the green tops as scallions early in the season or let the bulbs mature for a stronger flavor. The topsets (small bulbs at the top) can be replanted or eaten too, so you get a continuous supply.

Design-wise, the bulbs are typical onion sets - nothing fancy. They ship as dormant bulbs ready to plant. The organic label is a bonus for those avoiding synthetic inputs. One thing to note: these onions are perennial and will multiply over time. They can form a dense ground cover, which is great for weed suppression but might be too aggressive for small, tidy gardens. If you have space, they're a fantastic addition.

Drawbacks are few but worth mentioning. They do need full sun - part shade will reduce vigor. And while they're drought-tolerant once established, they appreciate occasional water during dry spells. Also, because they spread on their own, you'll want to give them room or be prepared to thin them out each year. But for the effort required, the payoff is excellent.

Overall, the Egyptian Walking Onion is a smart choice for any gardener looking for an easy, productive, and interesting perennial onion. Whether you're a beginner or an experienced grower, these bulbs will reward you with years of harvests. Just plant them and stand back.

The Mixed Onion Assortment from Stargazer Perennials is a practical choice for home gardeners who want a reliable supply of red, white, and yellow onions. This 8-ounce pack contains roughly 50 to 60 hand-sorted, non-GMO onion sets grown naturally in the USA. It's designed for gardeners in zones 3 through 10, making it a versatile option for most regions. Whether you're a seasoned grower or just starting out, the included planting guide helps you get started right away.

The standout feature here is the mix of three onion colors, which adds variety to your meals and garden. The sets are suitable for both short-day and long-day conditions, so they adapt well to different latitudes. Many buyers report high germination rates and fast growth, with some noting that the pack actually contains more than 50 bulbs. You can harvest them young for salads or let them mature into full-size onions for storage. The ability to plant in garden beds, raised planters, or even containers indoors adds to their appeal.

In terms of build quality, the bulbs are generally healthy and firm upon arrival, though a small number of customers have received dried-out or papery bulbs. The packaging is recyclable and the sets are shipped year-round, which is convenient for planning your planting schedule. The brand's commitment to chemical-free growing and bee-friendly practices is a nice bonus for eco-conscious gardeners.

On the downside, some users experienced variable yields, and a few found that a portion of the bulbs didn't sprout. Additionally, the product cannot be shipped to Idaho or Washington. Overall, this onion set mix offers good value for the price, especially if you want a diverse harvest without buying multiple varieties separately. It's a solid choice for any home gardener looking to grow their own onions with minimal fuss.

The CaribbeanGarden Sweet Granex onion sets bring one of the most beloved sweet onion varieties straight to your home garden. These are intermediate day-length onions, meaning they perform well across a wide range of latitudes. Each pack contains between 40 and 70 bulbs, giving you plenty of starts for a generous harvest. The variety is closely related to the famous Candy onion but with better storage capabilities - a clear advantage if you want to enjoy your onions well into the fall.

What sets these onions apart is their super sweet, mild flavor. They lack the harsh bite of standard storage onions, which makes them perfect for eating raw in salads or on sandwiches. That sweetness also shines when caramelized or grilled, adding depth to burgers, pizzas, and soups. Because they store longer than other sweet types, you can gradually use them over several weeks without worrying about spoilage.

Growing these onion sets is straightforward. Simply plant the bulbs pointy side up in sandy, well-drained soil about an inch deep and four inches apart. They thrive in full sun and need consistent moisture, especially during bulb formation. The plants are hardy to USDA zone 4, so they can handle colder springs and early frosts better than many other sweet onion varieties. You can expect good-sized, round bulbs with a bright yellow skin.

One minor drawback is that not every bulb may sprout - a common issue with onion sets. To maximize your yield, choose firm, dry bulbs and avoid planting in soggy ground. Also, if your soil is heavy clay, consider amending it with sand or organic matter to improve drainage. The pack size claims 40-70 bulbs, but the standard unit count is 40; larger packs may yield more, but it's worth checking the listing details.

Overall, these onion sets are an excellent choice for home gardeners who want a sweet, versatile onion that's easy to grow and stores well. Whether you're a beginner or an experienced grower, the CaribbeanGarden Sweet Granex delivers reliable results and delicious flavor straight from your backyard.

The Liliana's Garden Bunching Onion Mix is a curated collection of eight different scallion varieties, all packed into one convenient seed packet. Designed for both new and experienced gardeners, this mix includes types like Ishikura Improved (long white stalks), Apache (red with a sharp bite), and Heshiko (rich heirloom flavor). It's ideal for anyone who wants a continuous supply of green onions for garnishing, cooking, or fresh eating, without having to buy multiple packets of different varieties.

One standout feature is the diversity of colors and flavors. You get red, white, and green stems, so your garden and plate look as interesting as they taste. The claim of harvest in 50 days holds up well in most home gardens, especially when seeds are sown in fertile, well-drained soil with regular watering. Many users report that the seeds sprout quickly and abundantly, and that the plants regrow after cutting, extending the harvest season.

On the downside, a few customers experienced poor germination rates or weak seedlings. While the brand guarantees at least 85% germination, results can vary with temperature, soil quality, and watering consistency. There have also been occasional delays in shipping and some packets arriving with fewer seeds than advertised, though these instances seem infrequent. The product is also not suited for indoor growing unless you have strong grow lights and a controlled environment, as it prefers outdoor conditions.

Overall, this bunching onion mix offers excellent value for the price, especially for gardeners who appreciate variety and quick turnaround. The heirloom, non-GMO seeds and USA origin add to its appeal. If you follow the included growing guide and provide consistent moisture, you'll likely enjoy a steady supply of fresh scallions from spring through fall. Just be prepared for the possibility of variable germination, and order early to avoid any shipping delays.

If you are looking for a vegetable that practically takes care of itself, the Egyptian walking onion is a fantastic choice. This heirloom perennial, also known as tree onion or topset onion, is a unique plant that produces small bulbs at the top of its stalks. These topsets eventually bend down and plant themselves, giving the onion its walking name. The package includes 10 organic bulbs, ready to go into the ground.

What makes these onions stand out is their incredible ease of growth. They are drought tolerant, not bothered by deer or rabbits, and require very little water or care once established. You can harvest them as green onions for a fresh, mild flavor or let them mature into small bulb onions for cooking. They also form an effective ground cover, which helps suppress weeds and keep your garden tidy.

In terms of design and build quality, the bulbs are firm and healthy, typical of organic heirloom stock. They are best planted in full sun with moderate watering, and they thrive in a variety of soil types. The only real drawback is that they take time to establish. You might not get a big harvest in the first year, but once they settle in, they will keep coming back year after year.

Another thing to keep in mind is that the topsets can spread if you do not manage them. Some gardeners see this as a bonus, but if you prefer a tidy garden, you will need to keep an eye on where they wander. Overall, these are a low-risk, high-reward plant for anyone who wants a reliable, perennial onion supply.

Verdict: The Egyptian walking onion is a smart buy for gardeners who value ease and sustainability. It is not a flashy plant, but it delivers consistent, useful harvests with almost no effort. If you want a set-and-forget vegetable that keeps on giving, this is it.

The ESKS Yellow Onion Sets offer home gardeners a straightforward way to grow their own cooking onions. This one-pound bag contains 120-150 non-GMO, heirloom bulbs that are ready to plant in spring or fall. They are designed for USDA hardiness zones 3-9 and need full sun and regular watering. Whether you are a beginner or have been gardening for years, these sets are meant to be easy to establish and grow into full-sized yellow onions.

In terms of performance, many users report that the bulbs germinate quickly and grow vigorously. Several reviewers mention harvesting delicious onions within a few months, praising the flavor and the speed of growth. The bulbs are sized for easy planting, and the instructions recommend planting them one inch deep in well-draining soil. However, the quality control seems inconsistent. A number of customers received bulbs that were dried out, blackened, or already rotten. Some noted that over half the sets were unusable, and a few had sprouted prematurely. This suggests that storage and handling before shipping could be improved.

The design is simple: a bag of small, golden bulbs. There is no special packaging or extra protection, which may contribute to the damage during transit. The bulbs themselves are heirloom and organic, which appeals to those avoiding synthetic inputs. The expected plant height is about 16 inches, and they can be grown indoors near a window or outdoors in a garden bed. The main drawback is the variability in bulb condition. While some gardeners get a great batch, others are disappointed by the number of dead or rotten bulbs.

Overall, the ESKS Yellow Onion Sets can be a good value if you receive a healthy batch. The price is reasonable for the quantity, and the onions that do grow are tasty and versatile. But the risk of receiving poor-quality bulbs is real, so you might want to order early in the season and inspect the sets upon arrival. If you are willing to accept that some bulbs may not make it, these sets can still provide a rewarding harvest.

The TomorrowSeeds 3 Colors Mix Onion Sets offer gardeners a convenient way to grow a trio of onion varieties from a single purchase. This set includes Yellow Stuttgarter, Red Karmen, and Snowball White onions, each bringing its own flavor profile and color to the garden. Whether you are a seasoned grower or just starting out, these onion sets are designed to be easy to plant and care for, making them a solid choice for anyone looking to add homegrown onions to their harvest.

What sets this product apart is the mix of intermediate day onions, which perform well in a broad range of climates and day lengths. Customers report that the bulbs sprout quickly, often within a week, and produce vigorous growth. Many reviewers mention receiving over 100 bulbs in their order, offering excellent value for the price. The onions are suitable for both fresh eating and long-term storage, with the Yellow Stuttgarter variety known for its excellent keeping qualities.

In terms of quality, the bulbs are generally described as healthy and firm, though a few customers have noted some soft or moldy specimens. The packaging is compact and the sets arrive ready to plant. The color mix adds visual interest to garden beds, and the different flavors allow for culinary versatility from crisp red onions in salads to sweet whites in salsas.

One potential drawback is that the distribution of colors may not be perfectly equal, with some customers receiving more white and red onions than yellow. Additionally, while most bulbs sprout well, a small percentage may be too soft to use. However, the overall germination rate appears high based on feedback.

Overall, the TomorrowSeeds 3 Colors Mix Onion Sets are a reliable and cost-effective way to grow a diverse onion harvest. They are especially suited for gardeners in USDA zones 2 and above who want a simple, rewarding project. With proper care, these sets can provide a bountiful supply of flavorful onions for months.