Johnny's Selected
seeds has several onion varieties suitable for August planting. Buffalo, Olympic, and Walla Walla. Last week I planted Olympic and Walla Walla
seeds and am also trying Ailsa Craig which didn't survive last winter. (It got down to -5 degrees) The others are supposedly hardy to -10 degrees although I use row covers as added protection. The onions will grow larger and sweeter than if you waited to
plant till
spring. Some of my Walla Wallas were bigger than softballs.
I had been planting Buffalo with good results, but it wasn't in the catalog this year although I see now it is still listed in their online catolog.
Not all onions work well planted in the fall. Some aren't hardy at such a low temperature and others (like the Copra I also planted last fall) think they are entering their second
growing season in
spring and as a result will send up
flower stalks.
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