Largeflower Onion (Allium Macropetalum) is a perennial bulb in the Amaryllidaceae family with easy care difficulty. It requires low watering and full sun light in USDA hardiness zones 5-9. This plant is toxic to cats and dogs — keep it out of reach of pets. It can be grown indoors.

A perennial bulbous plant native to desert regions of the southwestern United States and northern Mexico, known for its showy pink to purple bell-shaped flowers.

Largeflower Onion

Largeflower Onion

Allium Macropetalum

A perennial bulbous plant native to desert regions of the southwestern United States and northern Mexico, known for its showy pink to purple bell-shaped flowers.

Quick Facts

Type
bulb
Lifecycle
perennial
Care Difficulty
Easy
Water Needs
Low
Light
Full Sun
Hardiness Zones
5-9

Safety

⚠️
Not Pet Safe
👶
Child Safe
Non-Toxic

Growing Conditions

Soil Types:sandy, rocky, loamy
Indoor:Yes
Outdoor:Yes
Garden Use:ornamental, pollinator support, groundcover

Care Calendar

Monthly care tasks for Largeflower Onion

Jan
Prune
Feb
Fertilize
Mar
Repot
Apr
Water+
May
...
Jun
...
Jul
...
Aug
...
Sep
...
Oct
...
Nov
...
Dec
...

Expert Care Tips

Pro tips from botanists and plant experts

Watering Tip

Check soil moisture by inserting your finger 1 inch deep. Water only when the top layer feels dry to prevent overwatering.

Humidity Trick

Group plants together to create...

Growth Hack

Rotate your plant every...

Photo Gallery10+ photos

Largeflower Onion
Largeflower Onion detail

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Taxonomy

Family:Amaryllidaceae
Genus:Allium