Gladiator Allium

Gladiator Allium Care

Allium Giganteum

What is the plant

Allium giganteum, common name giant onion, is an Asian species of onion, native to central and southwestern Asia but cultivated in many countries as a flowering garden plant. It is the tallest species of Allium in common cultivation, growing to 1.5 metres.

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Humidity

Normal

Lighting

Full Sun

Hardiness zone

4 - 10

Difficulty

Medium

How to Care for the Plant

Water
Water well throughout the growing season. Soil should be damp at about 1 inch below the soil surface. You can check this by sticking your finger in the soil. Water early in the morning to give all leaves enough time to dry. One inch of rain or watering per week is recommended for most perennial plants.
Pruning
Allium post bloom care is very easy. Simply keep the plants moderately watered until they fade to yellow and begin to shrivel. At this point, you can cut the plants down to the ground, leaving them where they are or dividing them. Allium bulbs should be divided every three or four years.
Fertilizer
Select a fertilizer made especially for alliums. If no specialty fertilizer is available, use a generic nitrogen-phosphorus-potassium type. For flowering alliums or those grown for food, use a generic fertilizer with a higher phosphorus content, which is indicated by the middle number of the three-number designation.

Disease diagnosis

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Sunlight
Full Sun Morning Sun & Afternoon Shade.
Soil
Normal, Sandy, Acidic.
Temperature
Ideal temperatures should be approximately 65-75ºF + (18-24ºC +), closer to 70ºF is best.