Organic Yellow Onion Seeds
Organic Yellow Onion Seeds
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Add some flavor to your garden with our organic Yellow Onion seeds! These seeds are organic, non-GMO, and heirloom so you can grow the highest quality harvest.
Instructions:
We recommend using the following to sow the seeds:
These prefer full sun, but can grow by a bright windowsill or under powerful grow lights more slowly and producing a smaller harvest. You can harvest the green stems in 90-100 days, the 3-6” bulbs mature in 90-120 days and prefer cooler temperatures. You can plant them in the fall and have them overwinter and harvest in the spring, or plant them in the spring to harvest in late summer.
(Find more info on germinating seeds by going to our seed guide)
These seeds are for the 2026 growing season.
About the seeds:
|
difficulty |
beginner | intermediate | advanced |
|
germination time |
4-10 days |
|
depth |
1/2” |
|
spacing |
4"-6“ or 1-2 seeds per soil pod or nursery pot |
|
recommended planter |
6"-12" planter or garden bed |
|
time to maturity |
90-120 days |
|
seed prep |
pre-soak | scarification | stratification | none |
|
method |
greenhouse | paper towel method |
|
temperature |
55F - 75F |
About the Plants:
|
description |
large bulbs with long green onion stems |
|
difficulty |
beginner | intermediate | advanced |
|
growth speed |
slow | medium | fast |
|
size of plant |
12"-18" tall with 3”-6” bulbs |
|
light |
full sun | partial sun | shade | grow lights |
|
soil |
sandy coconut coir/peat-based potting mix, pH 6.0-7.0 |
|
temperature |
warm | cool |
|
pet-friendly |
cats | dogs | no |
|
pests |
thrips, aphids, fungal blight |
|
fertilization |
heavy | moderate | light |
