SHOP PRODUCTS
Houzz Logo Print
gardenerzone4

How do I know if an onion is short, long, medium, or neutral day?

gardenerzone4
12 years ago

I live in the Midwest at a latitude of 41ÃÂN. As I read the Stokes catalog, I could not find enough information on the onion descriptions to enable me to choose the appropriate onion varieties for my area. I've typically seen seed catalog descriptions indicate whether each onion is a short-day, intermediate-day, long-day, or day length neutral variety. Johnny's Seed even describes the precise range of latitudes for which each onion variety is suited. For example, the following page shows that Walla Walla is adapted to 35ÃÂ-55ÃÂ latitude, so I know that it'll bulb up in my area: http://www.johnnyseeds.com/p-8613-walla-walla-sweet-og.aspx

But Stokes has no such descriptions. How am I supposed to know whether an onion would bulb up at my latitude? Is there a comprehensive list somewhere that I can reference?

Also, is it true that onion seeds are only viable for 1 year? What's the germination rate by year 2?

Comments (7)

Sponsored
Hoppy Design & Build
Average rating: 5 out of 5 stars9 Reviews
Northern VA Award-Winning Deck ,Patio, & Landscape Design Build Firm