Plant Care Welsh Onion
1/10

Welsh Onion

4.8 out of 5 (10 experiences)

Welsh Onion has a Easy to propagate plant personality Easy to propagate
Welsh Onion has a Fast grower plant personality Fast grower

Also known as

Long Green Onion, Long Green Onion, Spring Onion, Japanese Bunching Onion, scallions, green onion, Scallion, Scallions and green onion

Taxonomy

Allium fistulosum
Allium
Amaryllidaceae
Asparagales

How to care for Welsh Onion

Water

How often to water your Welsh Onion

Water needs for Welsh Onion
0.5 cups
every 9

Welsh 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 Welsh Onion

Water 0.5 cups every
9

Does your plant get direct sunlight?

Select the pot size

5"
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 Long Green Onion in your home

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

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

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

Welsh Onion does not tolerate low-light 🚫.

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

Nutrients

How to fertilize Welsh Onion

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

FAQs
Difficulty Level

Welsh Onion is generally easy to care for, though some plant parents report facing challenges with growing it. Check out the reviews down below to read more about their experiences!


Water Needs
Sunlight Needs
Soil
Fertilizer
Growth Pattern
Growing Outdoors

Care Summary for Welsh Onion

Welsh Onion

Welsh Onion


Greg recommends:

Water

0.5 cups every 9 days

Placement

< 1ft from a window

Nutrients

Repot after 2x growth

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

What other plant parents say

Welsh Onion has a Easy to propagate plant personality Easy to propagate 7
Welsh Onion has a Fast grower plant personality Fast grower 6
Welsh Onion has a Survivor plant personality Survivor 4
Welsh Onion has a Browns easily plant personality Browns easily 1
Welsh Onion has a Pet friendly plant personality Pet friendly 1
Bittermulatto avatar
@Bittermulatto
leaf-1 24 Plants
xp 1,100 XP
globe Bloomington, Illinois
08/01/2021

Everyone should grow their own green onion. It’s stupid easy to grow indoors and outdoors, you get fresh green onion whenever you want, it’s nice!

Fast grower Fast grower
Easy to propagate Easy to propagate
Survivor Survivor
Browns easily Browns easily
Kee_na avatar
@Kee_na
leaf-1 4 Plants
xp 105 XP
globe Cookeville, Tennessee
07/11/2021

I started these from the ends of green onions I got at the grocery store. All I did was stick them in some dirt and they started sprouting! Really easy to repot them.

Fast grower Fast grower
Easy to propagate Easy to propagate
Alexander avatar
@Alexander
leaf-1 6 Plants
xp 64 XP
06/14/2021

Nothing you need to know, they are just so adorable and fast growers!

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