Plant Care Autumn Onion

Autumn Onion

About Autumn Onion

Autumn Onion is a super rare houseplant 🌿 that is easy to grow and needs regular watering to thrive. They do best in long-lasting, direct light ☀️ and should be less than 1 foot from a window.

Autumn Onion likes soil that is well draining. Your plant shouldn't need added fertilizers if you repot each time it doubles in size.

Autumn Onion belongs to the Allium genus, and is native to North America.


Allium stellatum

Also known as

autumn onion and prairie onion

How to care for Autumn Onion


How often to water your Autumn Onion

Water needs for Autumn Onion
0.5 cups
every 9

Autumn Onion needs 0.5 cups of water every 9 when it doesn’t 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.

Calculate water needs of Autumn Onion

Water 0.5 cups every

Does your plant get direct sunlight?

Select the pot size


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 Autumn Onion in your home

Light needs and placement for plant Autumn Onion: 1ft from a window
1ft or less from
a window

Autumn Onion love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to maximize the potential for growth.

Autumn Onion does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of Autumn Onion in your home 🏡.


How to fertilize Autumn Onion

Nutrient, fertilizer, and repotting needs for Autumn Onion: repot after 2X growth

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 it’s likely grown enough to need a larger pot anyway.

To replenish this plant's nutrients, repot your Autumn Onion after it doubles in size or once a year—whichever comes first.

Difficulty Level

Autumn Onion is generally considered an easy-to-care-for plant and makes a great choice for beginners!

Water Needs
Sunlight Needs
Native Region
Growth Pattern
Growing Outdoors

Care Summary for Autumn Onion

Autumn Onion

Autumn Onion

Greg recommends:


0.5 cups every 9 days


< 1ft from a window


Repot after 2x growth

Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.

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