ornamental onion
Allium schubertii
Overview
The ornamental onion is an amazing and unexpected addition to any garden. These vibrant purple flower clusters feature hundreds of individual blossoms that contrast gorgeously against their deep green foliage. They can also create an interesting, textural element with long, thin stems that reach up to two feet tall. This versatile plant is relatively easy to care for, blooms from late spring to early summer and makes a beautiful border in any garden. Plus, ornamental onions are deer-resistant, so they won't be eaten by any uninvited guests!
Care Guide
Watering
Ornamental onion should be watered regularly in order to keep its soil evenly moist. Water the plant deeply and allow it to drain thoroughly, about once per week during the growing season and gradually reduce watering to every other week as fall approaches and temperatures cool. Do not allow the soil to dry out completely, as this can cause the onion's bulbs to split. During winter months, water the plant only occasionally – no more than once per month or when the soil feels dry to the touch.
Light
The ornamental onion plant (Allium schubertii) does best when grown in full sun to partial shade. This plant species thrives when exposed to 6-8 hours of direct sunlight per day. If it receives more than 8 hours each day, it should be grown in partial shade to avoid any sun-scorching that may occur. The ideal situation would be to have the plant in full sun for the morning hours (8-10am) and partial shade during the hottest part of the day (2-4pm). This will provide the plant with an optimal balance of direct sunlight and protection from the heat of the day.
Temperature
Hardiness zone 5–8.
Pruning
Ornamental onions should be pruned at the end of the flowering season, around late summer or early autumn. This should involve cutting back the foliage of the plant, removing any dead, diseased or damaged foliage and then cutting off around half of the stem height once the flowering has stopped. Pruning in this way will help to maintain a neat and healthy appearance over the winter months.
Propagation
Division, Seed Propagation, Bulbils, Offsets
Uses & Symbolism
Attracts: Butterflies.
Related plants
Other plants you might like if you grow ornamental onion.
