Allium bulbs

Allium bulbs include both ornamental varieties and edible types. Ornamental allium bulbs produce striking globe-shaped blooms that attract pollinators and add vertical drama to borders. Edible garlic bulbs are grown from individual cloves and harvest into cloves or heads, while onion bulbs and onion sets yield fresh onions for cooking. You may blend ornamental and edible alliums in a single bed for year‑round interest, or plant separate zones for distinct harvests.

Key questions to consider: Do I want a dramatic flower display or a practical kitchen harvest? Which varieties suit my soil and climate? How many bulbs do I need for the chosen bed or container? When is the best planting season in the UK? What care steps will keep both ornamental and edible bulbs healthy?

Planting times depend on the type. Most ornamental alliums are best planted in autumn, allowing roots to establish before winter and to bloom the following late spring or early summer. Edible garlic is typically planted in autumn in the UK, giving a long growing season over winter. Onion sets are usually planted in spring for summer harvests. If you live in milder areas, some varieties can be planted in late winter as long as the soil isn’t waterlogged.

Questions to ask when planning: Do I have well-draining soil and full sun for most of the day? How deep should the bulbs be planted in my chosen bed or pot? Do I need to acclimate bulbs in a cold frame before planting? What is the recommended spacing to ensure good air flow and healthy blooms?

After planting, keep the soil evenly moist but not waterlogged, especially during the first growing season. Mulch lightly to conserve moisture and suppress weeds. Fertilize with a balanced bulb fertilizer or compost in early spring for edible onions and garlic, and ensure good drainage to prevent rot. Support tall ornamental varieties with stakes if necessary and deadhead spent blooms to encourage a tidy border. If pests like slugs appear, use eco-friendly controls and remove debris that can harbor them.

Related questions: Should I water less or more during dry spells? Can I transplant bulbs after autumn planting? How do I protect bulbs from late frosts? Which companion plants enhance growth and pollinator activity?

For borders, popular ornamental choices include Allium giganteum, Allium christophii, and Allium schubertii, which offer striking globe blooms at different heights. For pollinators, late-spring and early-summer bloomers attract bees and butterflies. Mix tall flowering alliums with short companion perennials like echinacea or salvia to create layered interest. Edible garlic or onion varieties are chosen more by harvest timing and flavor than appearance, but many home growers prefer hardier, storied varieties such as hardneck or softneck garlic depending on climate and storage needs.

Additional questions: Which soil types support large bulb yields? Are certain varieties better for containers? How can I extend bloom time with staggered planting? Do these bulbs require winter protection in our climate?

Many Wowcher deals on allium bulbs feature free delivery or reduced shipping on qualifying orders. Some listings offer bulk discounts for gardeners purchasing multiple packs or varieties, while others may include promotional codes at checkout. Always review the listing details for minimum spend, regional restrictions, and current promotions so you know the final price including delivery.

Other common questions: Can I combine different bulb types in one order? How do I apply a promo code at checkout? What is the return policy if bulbs don’t sprout? Are there seasonal drops when new stock arrives?

Plant garlic cloves in autumn in well-drained soil with a sunny location. Space cloves about 10–15 cm apart and plant cloves pointy end up to a depth of 5–8 cm. Mulch to protect crowns over winter. Harvest garlic when the lower leaves turn yellow and begin to dry. For onions, plant sets in early spring in a sunny, well-drained bed with spacing around 8–12 cm. Harvest onions when tops fall over and begin to brown. Questions you might ask: How do I cure and store harvested garlic? Which varieties store best? Can I grow garlic and onions in the same bed next season?

Look for fresh bulbs with intact skins and no signs of mold or soft spots. Check variety type (ornamental vs edible), planting timing, and recommended spacing. Verify package contents—are you buying a mixed pack or single variety? Confirm delivery options, whether free delivery applies, and any bulk discounts. Consider your climate and soil type to pick varieties that will thrive in your garden.

Additional questions: Should I soak bulbs before planting? What days are best for planting in autumn? How long do ornamental alliums take to bloom after planting? Are there companion plants to improve bloom or harvest quality?