Allium Gladiator bulbs are planted in the ground in autumn so that they can sprout in spring. But does the ornamental onion need to be protected from frost during the cold winter months or can it survive the cold without protective measures?
Is the Allium Gladiator hardy and how do I prepare it for winter?
The Allium Gladiator is hardy and can withstand temperatures down to -20 degrees Celsius. For the winter, the flower bulbs should be buried deep enough and the spent flowers should be cut off. In the pot it needs a frost-protected, cool winter quarters.
Is the Allium Gladiator hardy?
Like most other ornamental garlic varieties, the Allium Gladiator iswinterhardy. It can withstand temperatures down to -20 degrees Celsius and does not require any cold protection such as fleece or mulch.
How do I prepare the Allium Gladiator for winter?
When planting, you should make sure to bury the flower bulbsdeep enough so that they are better protected from frost. As soon as the Allium Gladiator has faded and wilted after its flowering period in late summer, the flowers should be cut off. Part of the stem can be left standing, as the hollow stems serve as a natural insect hotel.
How do you overwinter Allium Gladiator?
Ornamental onions planted outdoors do not require any further action afterpruning. Allium Gladiator can also be overwintered in a pot, but it should then be moved to a frost-protected but cold location. The ideal temperatures in the winter quarters are 5 to 10 degrees Celsius.
Tip
The Allium Gladiator needs it cold
For optimal flower formation, it is important that the ornamental onion is exposed to the cold in winter. If it is too warm in winter, it will start to produce flowers too early.
