Expression Onion: Where It Bulbs and How Long It Keeps
Expression is an intermediate-day onion, which means it only bulbs properly between roughly 32 and 45 degrees north latitude.
Elsye Onion: Where It Bulbs and How Long It Keeps
Elsye is an intermediate-day onion, which means it bulbs reliably between roughly 32 and 45 degrees north latitude, a band that covers much of the middle…
Ailsa Craig Onion: Where It Bulbs and How Long It Keeps
Ailsa Craig is a yellow long-day onion maturing in about 110 days from transplant, suited to northern latitudes with no published keeping time.
The Best Onion Varieties for Connecticut
Connecticut sits at 41.16 degrees north latitude, the figure recorded at the Hartford-area weather station that anchors the state’s climate data.
The Best Onion Varieties for California
California sits at 33.94 degrees north latitude, based on the Los Angeles weather station, and gets 14 hours and 16 minutes of daylight on the longest…
When to Plant Onions in British Columbia
British Columbia sits far enough north that onions don’t run on the calendar most gardeners expect.
The Best Onion Varieties for British Columbia
British Columbia sits at a latitude where summer days run long enough to trigger bulbing in long-day onions, and only long-day onions.
The Best Onion Varieties for Arizona
Arizona sits at a latitude where short-day and intermediate-day onions bulb reliably, while long-day onions never will.
Growing Onions in Yukon: Which Varieties Actually Bulb
Whitehorse’s long summer days trigger long-day onions like Redwing to bulb, while short-day and intermediate varieties just grow leaves and never form bulbs.
Growing Onions in Wyoming: Which Varieties Actually Bulb
At 41.15 degrees north, the reference location for this page gets 14 hours and 58 minutes of daylight on the longest day of the year.