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Also known as
Three-Cornered Leek, Three-Cornered Leek and Onion weed
Taxonomy
Allium triquetrum
Allium
Amaryllidaceae
Asparagales

How to care for Onion Weed
How often to water your Onion Weed

every 9
Onion Weed 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.
Water 0.5 cups every
9
Finding light for Three-Cornered Leek in your home

a window
Onion Weed love being close to bright, sunny windows 😎.
Place it less than 1ft from a south-facing window to maximize the potential for growth.
Onion Weed does not tolerate low-light 🚫.
Select your region to see how the current weather in your area affects the placement of Onion Weed in your home 🏡.
How to fertilize Onion Weed

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 Onion Weed after it doubles in size or once a year—whichever comes first.
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Allium's grown so much he doesn't fit the greg frame anymore 🥺 The last pic is the latest,He's gonna get a haircut today though,i need him for my ramen 😂 #newgrowth #happyplants #globeonion (22 jan-31st jan-11feb,Today.)
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How often should I really be watering my Green Onions? I had a horrible habbit of drowning my plants (caused me to drop gardening for a VERY long time), how often should i water these fellas? (Still in the process of building the planter box, paper plates will not be permanent, needed them of course for the drainage) 😊
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How should I start growing my garlic plant? Do I just put it in a glass of water? #Garlic
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Why has this garlic plant fallen over? Why is my sprout sad?
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Minggu ke 4 Sitengah udah muncul daunnya
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Um so my little garlic experiment exploded in growth. Apparently the green shoots can be eaten? Also how does new garlic form from this? Someone satiate my curiosity before I turn to google. Thanks!
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I Know this is a good thing. But can someone tell me what this means
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Finally got these little ones in a bigger pot. They are looking healthy to me. What do you think?
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Onilord has been like this for months, even on a regular watering schedule, I've moved him inside and outside. Even tried fertilizer. What am I doing wrong for Onilord to not grow?
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Harvest for today! 💚💚 Loving my green onion 🤤 #PlantsMakePeopleHappy #NewGrowth #julesplants
Onion Weed 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
Onion Weed requires abundant, bright and direct light. Place it less than one foot from a window to ensure it receives enough light to survive 💪. Select your region to see how the current weather in your area affects the placement in your home 🏡.
🐶 🐈 👶 Toxicity
Greg does not have confirmed data on this plant’s toxicity. If you, a family member, or a pet consumes plant material of unknown toxicity, it’s always best to consult a medical professional.
If you or someone else ingested this plant, call Poison Control at US (800) 222-1222. If a pet consumed this plant, contact your veterinarian or the ASPCA at US (888) 426-4435.
💨 Humidity
Onion Weed doesn’t require additional humidity. Plants absorb most water through their root system rather than their leaves, so the best way to provide humidity for your plants is through watering the soil.
🪴 Soil
Onion Weed 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
Onion Weed 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 it’s refreshed yearly, you shouldn’t need to use fertilizer. Remember, plants get their energy from sunlight, not fertilizer!
🌎 Native Region
Onion Weed is native to the Northern Hemisphere, South America, and Africa.
🌦️ Growing Outdoors
USDA Hardiness Zone
Onion Weed can be grown outdoors in USDA Hardiness Zones 7a-10b. Find your local hardiness zone here.
🧐 Troubleshooting
When troubleshooting a sad-looking houseplant, start by checking for signs of distress in its leaves, such as yellowing, browning, or drooping, which can indicate overwatering or nutrient deficiencies.
Inspect the soil moisture; too dry or too wet soil can cause problems.
Ensure the plant is getting the right amount of light, as too much or too little can stress it.
Finally, consider environmental factors like temperature and humidity, and adjust care routines accordingly to revive your plant.
Care Summary for Onion Weed
Onion Weed
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.
