User avatar
Gary350
Super Green Thumb
Posts: 7396
Joined: Mon Mar 23, 2009 1:59 pm
Location: TN. 50 years of gardening experience.

Growing onions in 3 gallon pots.

I am planting winter onions in 3 gallon pots, 7 seeds per pot, 8 pots = 56 onions. Seeds should be planted in fall 2 months before first frost. If I plant now I need to keep plants warm to get them to grow. I have 32 house windows I can build a temporary hot room over the pots. Typical day time temperatures has been 54 degrees most of the time. I made experiment box Sun has been heating a 32"x36"x32" box made from 5 windows to 70 degrees F some days. I wonder if this will work for onion seed to grow 70 most days then 25 degrees at night this is extreme temperature change?
Attachments
100_2241.JPG

User avatar
jal_ut
Super Green Thumb
Posts: 7447
Joined: Sun Jan 18, 2009 10:20 pm
Location: Northern Utah Zone 5

Onions do quite well in cool weather. I think you will do fine if they get to 70 daytime.

User avatar
Gary350
Super Green Thumb
Posts: 7396
Joined: Mon Mar 23, 2009 1:59 pm
Location: TN. 50 years of gardening experience.

My 60 year old windows are falling apart. Most of the caulking has fallen out and several sheets of glass have fallen out. I took all my windows in the shop to dry it has been raining here for a month. After 3 days of work I put in glass & caulking & paint. Wood is not dry as it appears it is wet down deep it make take a while for these to dry in high humidity TN weather.

Someone on CL had 20 windows $100 I bought them all they are larger & better than windows I already have. Soon as I find 20 more windows for sale I will have a real green house.

I have 500 yellow onion seeds I planted 6 more pots of onion seed. I decides to have about 25 seeds per pot as onions grow we can put the small ones to eat leaving 7 onions in each pot to grow into large onions. I have not seed not sure where to plant them.
Attachments
100_2253.JPG
100_2252.JPG



Return to “Onion Gardening Forum”