How to Grow Ornamental Allium

With nearly 400 ornamental allium species to choose from, it's easy to find one that fits into any garden. Allium is a member of the same family as garlic, onions and chives but the tufted flowers that sit atop leafless stems give no hint of their cousins. When crushed the resemblance is noticeable; but these sun loving blooms resemble lollipops and are available in a variety of cheerful colors. Read on to learn more.

Difficulty: Moderately Easy

Instructions

Things You'll Need:

• Allium bulb
• Bulb planter or garden trowel
• Water
• Mulch or other organic material

1. Choose a planting site that receives full sun and the soil drains well.

2. Dig your planting hole 3 times the circumference of your bulb. A 3 inch bulb should be planted 9 inches deep. If planting a group of bulbs space the planting holes 4 to 12 inches apart depending the plant size.

3. Position the bulb in the hole with the pointed end up.

4. Cover the bulb with the original soil and water well.

5. Spread mulch over the entire planting area. Compost or wood chips also work well.

Tips & Warnings

• After the allium has bloomed, apply a good general fertilizer such as 12-12-12. This will help provide nutrients for next year's blooming. Bulbs do not need to be lifted in colder climates.
• Allium should be successful in zones 3 through 8. Be sure to check the USDA Hardiness Zone map for suitability in your area.
• The oniony smell of the allium is mild and only noticed when the plant is bruised. The smell and taste, however, is unpleasant for rodents and deer make this plant an excellent choice for gardens they visit.
• Allium is a wonderful addition to any flower arrangement, but be sure to cut the flower stem only. It is important for the foliage to remain on the plant so it can provide the food necessary for the bulb to bloom next year. When foliage has turned yellow or brown, the plant can be safely cut back.
• Plant allium in the fall, but be aware that different varieties have different blooming times. Larger alliums bloom in summer while smaller varieties are spring bloomers. When selecting your bulbs be sure to check for height, color and blooming time appropriate for your garden needs. Some allium grow to heights up to 3 feet and have soccer ball size blooms.