Broadstemmed onion
Also known as
Flat-stem onion
Taxonomy
Allium platycaule
Allium
Amaryllidaceae
Asparagales
How to care for Broadstemmed onion
Water
How often to water your Broadstemmed onion
every 9
Broadstemmed onion needs 0.5 cups of water every 9 when it doesnāt get direct sunlight and is potted in a 5" pot.
Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.
Water 0.5 cups every
9
Light
Check the growing potential in your area
A plant's growing potential is determined from its location, the time of year, and current local weather.
Select a city to check sunlight intensity
Finding light for Broadstemmed onion in your home
a window
Broadstemmed onion love being close to bright, sunny windows š.
Place it less than 1ft from a south-facing window to maximize the potential for growth.
Broadstemmed onion does not tolerate low-light š«.
Select your region to see how the current weather in your area affects the placement of Broadstemmed onion in your home š”.
Nutrients
How to fertilize Broadstemmed onion
Most potting soils come with ample nutrients which plants use to produce new growth.
By the time your plant has depleted the nutrients in its soil itās likely grown enough to need a larger pot anyway.
To replenish this plant's nutrients, repot your Broadstemmed onion after it doubles in size or once a yearāwhichever comes first.
FAQs
Broadstemmed onion prefers for the soil to dry out between waterings and should be watered regularly. Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.
Sunlight Needs
Broadstemmed onion requires abundant, bright and direct light. Place it less than one foot from a window to ensure it receives enough light to survive šŖ. Select your region to see how the current weather in your area affects the placement in your home š”.
Soil
Broadstemmed onion does best in well-draining soil. A good soil will contain lots of organic matter such as coco coir as well as perlite or vermiculite to help with drainage. Adding a handful of perlite to regular store-bought potting soil should do the trick!
Fertilizer
Broadstemmed onion should be repotted after it doubles in size or once a year, whichever comes first. Fresh potting soil has all the nutrients your plant needs, so as long as itās refreshed yearly, you shouldnāt need to use fertilizer. Remember, plants get their energy from sunlight, not fertilizer!
Growth Pattern
Broadstemmed onion grows vertically and new growth will emerge from the top of the plant.
Growing Outdoors
USDA Hardiness Zone
Broadstemmed onion can be grown outdoors in USDA Hardiness Zones 5a-9b. Find your local hardiness zone here.
Care Summary for Broadstemmed onion
Broadstemmed onion
Greg recommends:
Water
0.5 cups every 9 days
Placement
< 1ft from a window
Nutrients
Repot after 2x growth
Based on the 4ā pot your plant is in, and that it doesnāt get direct sunlight.
