Plant Care Tree Onion

Tree Onion

Also known as

Topsetting Onions and Walking Onions


Allium proliferum

How to care for Tree Onion


How often to water your Tree Onion

Water needs for Tree Onion
0.5 cups
every 9

Tree 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 Tree 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 Tree Onion in your home

Light needs and placement for plant Tree Onion: 3ft from a window
3ft or less from
a window

Tree Onion may have difficulty thriving, and will drop leaves 🍃, without ample sunlight.

Place it less than 3 feet from a south-facing window to maximize the potential for growth.

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


How to fertilize Tree Onion

Nutrient, fertilizer, and repotting needs for Tree 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 Tree Onion after it doubles in size or once a year—whichever comes first.

Care Summary for Tree Onion

Tree Onion

Tree Onion

Greg recommends:


0.5 cups every 9 days


< 3ft 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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