These plants are bulbeous. The Allium giganteum has a panel-like development, therefore it tends to widen very much. This plant in the summer assumes a purple colouring; it is large in size and can reach 2 m high. It doesn't keep its leaves in the winter.
Light Allium giganteum
The Allium giganteum should be preferably located in a place where it can have at least a few hours a day of direct solar light. These plants are rustic in the areas with a Mediterranean climate, therefore they can be grown outside.If you desire cleaning the ground from the bulbous plants after flowering, wait for the leaves to dry; later itís possible to take the bulbs out of the ground and place them somewhere dark, cool and dry, until the best season to plant them again.
Water Allium giganteum
Let's water abundantly, moistening the soil deeply with 1-2 glasses of water , but let's act only when the substratum is dry, leaving it dry even for 1-2 weeks before watering it. We suggest not to exceed with the waterings: if the soil remains damp too long, it can favour the development of rotten in the bulbs.
Pests Allium giganteum
As the day-time temperatures rise at the beginning of the spring, it is agreeable to practice a preventive treatment, with a wide-range insecticide, which should be applied when there arenít flowerings in the garden. Before the buds become too large, it is advisable to also treat them with a wide-range fungicide, to prevent the development of fungal diseases which spread easily when there is an elevated environmental moisture.
Mold Allium giganteum
Letís favour soft soils, with an elevated drainage.
Plant Allium giganteum
If desired, we can grow the The Allium giganteum in a container. The indications given in this article are related to a medium size plant.