In this area (USDA Zone 8b in Texas), onions can be planted at now
When preparing to grow onions in the garden:
- Purchase onion varieties that will grow in your area. These onions (pictured above) were purchased from our local Co-OP. The two kinds of onions we planted are; Texas Legend (yellow onion) and Hybrid Southern Bell Red (red onion).
- Check if the ground temperature range is 45 to 60 degrees (preferred temperature range for successful onion growing).
- Remove weeds from the garden bed.
- Plant onions about 6 inches apart and 2 inches deep in the soil.
- Wait until the green tops fall over on the ground before harvesting.
The picture below illustrates that the white bulby part of the onion is not visible above ground.
Onion Trivia: Long Day versus Short Day Onions.
Select an appropriate class of onion for your region. In Southern states, the soil is sufficiently warm in February, so plant short day onion varieties. In the northern states, it will be at least late April until the soil temperature is minimally warm enough, so plant long-day onions.
Why? Spring days are shorter than Summer days — long day onions will not grow in the southern heat conditions (when day length is longer), so in Southern states, plant early and use short-day onions for best growth during Spring/early summer.