One query, two harvest goals
Decide whether you want bulbs or green bunching onions
The broad planting-chart row is labeled mature onion. UGA handles green bunching onions separately, so the page does too.
Mature onion, spring chart
January 1 – March 15
Middle Georgia chart range; North Georgia guidance favors plants in early or mid-March.Mature onion, fall chart
September 1 – December 31
Middle Georgia chart range; South Georgia guidance separates September–October seed from November–December plants.Method changes with region
South Georgia can seed in fall; North Georgia uses spring plants
This crop has better regional evidence than a generic two-week shift, so the public answer uses the crop-specific branches.
North Georgia
Set out plants in early or middle March.
Do not borrow South Georgia’s September–October direct-seeding instruction.Middle Georgia
Use the chart ranges as a starting frame and choose plants, sets or seed only when the goal supports it.
The broad row does not explain every onion type.South Georgia
Direct-seed mature onions in September or October, or set out plants in November or December.
This branch is the strongest crop-specific fall instruction in the source.Before buying seed, sets or plants
Name the harvest and the region first
The wrong planting material can make a correct calendar date useless.
- You have chosen mature dry bulbs or green bunching onions as the outcome.
- The planting material matches that outcome and your Georgia region.
- The date follows the crop-specific North or South branch where one exists.
- The bed receives full sun and has the drainage expected for a home vegetable garden.
Match material to outcome
Do not treat seed, sets and plants as interchangeable
For mature bulbs, start with region
South Georgia has a supported fall seed-or-plant split; North Georgia has a spring plant target.
For green bunching onions, use sets or plants
UGA gives roughly 6–8 weeks to eating size and about 2 inches between plants.
For the broad Middle chart, keep the label visible
The January–March and September–December ranges refer to mature onions.
Avoid a Vidalia shortcut
A regional product name does not justify a separate doorway page or a copied commercial schedule.
Resolve the ambiguous query
The harvest goal comes before the calendar
Someone asking when to plant onions may mean quick green onions or stored bulbs. Those are not the same job.
Green bunching goal
Use sets or plants
Plan around the roughly 6–8 week path to eating size instead of the mature-onion chart.South Georgia bulbs
Fall method depends on month
Direct seed in September or October; use plants in November or December.North Georgia bulbs
Use the March plant target
Set out plants in early or middle March rather than copying the South Georgia seed window.Middle Georgia edge
The chart is broad, so verify the material
Plants or sets may fit, but the page does not invent a single method for the entire four-month fall span.Intent boundary
This page does not promise a Vidalia production calendar
Vidalia onions have a protected regional identity and commercial production guidance. The page answers the ordinary Georgia home-garden timing question.