- Partial Sun to Full Sun (At Least 5 Hours of Direct Sunlight)
- Height 1 - 1.5 Feet
- Width 10 - 15 Inches
- Growing Zones 4-8
A time-honored addition to most informal gardens, Allium continues to be a gardener’s favorite. Large lavender umbels of flowers sway over fleshy green stalks with strap-like leaves at ground level. When you brush or squeeze any part of the plant, an onion fragrance will waft up to you, adding to their appeal in your garden. They make wonderful perennial additions to childrens’ gardens as well as wildlife gardens as bees and butterflies love them. Serendipity Ornamental Onion is a particularly prolific bloomer, sending up multiples of stalks with large flower heads rather than just one or two.
Native to temperate regions of the Northern Hemisphere, allium are hardy in Zones 4-8, growing in most of the United States except the very coldest winter regions and the very hottest summer regions. Gardeners the world over appreciate the allium family of plants, especially the ones with culinary benefits, onions and garlic, which have been used for thousands of years for food and for their medicinal benefits. Although technically all true alliums are edible, some are more suited for ornamental purposes, being either too strong, stringent or woody to be palatable. These are best enjoyed for their lovely flowers.
Serendipity Allium Care
Plant alliums in part to full sun, about 4 hours of sun is the minimum they prefer. Soil pH will be on the acidic side at 5.8 to 6.2. Use a sulphur based acidic fertilizer for best results. Alliums gain their classic onion smell from the sulphur in the soil. Water when first planted, then again during extended dry periods although alliums will tolerate some drought. Soil should be well draining to keep bulbs from rotting. Remove yellowed or damaged leaves. Deer and rabbit are not typically drawn to alliums so you shouldn’t have to worry about them browsing on them. Plant alliums outside about a week after the danger of the last frost has passed for best results.
Deadhead spent blooms to keep them from going to seed to extend the bloom season as much as possible. When the allium has ceased producing flowers, cut all spent flowers off but leave the foliage in place to garner energy from the sun. Once the foliage yellows, however, you may cut it down to the ground. Mulch with a good quality pine mulch to help soil retain its moisture and protect the roots in harsh winter regions. Although alliums produce seeds, these seeds may be viable as this is a hybridized variety. Divide clumps every three years to keep them from getting overcrowded.
Serendipity Allium Spacing
Space your alliums about 10 to 15 inches apart. These beauties will grow to about 20 inches tall and spread out to 15 inches wide. Alliums make an interesting addition to indoor flower arrangements. Plant them in masses in your landscape, in your informal cottage garden, and as an interesting thriller in your patio planters for height and that cool lavender color. You will find many ways to use alliums in your garden this spring.
Serendipity Allium Information
USDA Hardiness Zones: 4-8 |
Plant Type: Perennial |
Sunlight Exposure: Partial Sun to Full Sun |
Mature Height: 1 - 1.5 Feet |
Mature Width: 10 - 15 Inches |
Plant Spacing: 10 - 15 Inches |
Growth Habit: Upright |
Flower Color(s): Purple |
Flower Shade: Rosy Purple |
Seasonal Interest: Mid Summer Late Summer |
Foliage Type: Herbaceous |
Foliage Color(s): Blue-Green |
Attracts: Bees, Butterflies |
Resists: Deer, Rabbits |
Tolerates: Drought |
Features: Attracts Pollinators, Cut Flowers, Deadheading Not Necessary, Fragrant, Low Maintenance, Award Winner |
Uses: Border Plant Container Cut Flower Mass Planting |
Plant Brand: Proven Winners |
Botanical/Scientific Name: Allium hybrid USPPAF, Can PBRAF |
- SKU:
- ALLSEQT
Container Sizes
Please Note: The pictures below are to give a general representation of the different container sizes. The actual size/ages of plants are estimates and will vary based on; type of plant, time of year, last pruning & many other factors.
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Planter Shipping
Standard Colors: 2-3 business days
Special Order Colors: 8 weeks - this is due to the planter being custom made with the color(s) of your choice
Please Note: On special orders there can not be any cancellations
Plant Shipping
Time of Order:
Summer Shipping
- If there is extreme heat we’ll delay shipping.
- We’ll have to review what areas the plants are traveling through along with your location
Once your plant is shipped you’ll receive an email with tracking information. Depending on the above criteria we’ll ship your plant(s) towards beginning of the following week from your order. We put together this helpful guide of what to do when you receive your plants in the mail.
It is important to know that all of our plants are clearly labeled for which growing zones the plant can survive in. The plants are thoroughly trialed and tested in every growing zone before we state the plant can grow in a zone. Again, our #1 priority is to ship the plants to you healthy and ready to thrive in your location. So we will do everything in our power to do so.