Lemons should work. Maybe Persian lime? Anything that doesn't need heat to sweeten up.

Being that its a container, you can do almost any variety. I'm in 7a and relegated to containers citrus as well (though I'm trying a calamadin in ground again). So choose what you like. The only variety that I really recommend is a blood orange. They gain their red/purple pigment from "chill" hours. Keep in mind, citrus chill is different from cherry and peach "chill" hours. I keep my Moro in my basement overwinter where it is cooler than upstairs. I've had the two other common (Sang and Tarocco) and only kept the Moro. I've harvested quite a few Moros in the past (big too... about the size of small to medium grapefruits) with pretty decent color blush, though this year, my Moro seems to have taken the year off! I have an Owari which has quite a few baby fruits set on it. And I thought it was done, but now has more flowers coming on. Love the owari satsumas - they are quite flavorful with a bit of acidity. My Cara-Cara is pushing some new flowers may to replace it's lost fruit and some branches during the crazy windy days earlier this spring. They too develop a slight reddish blush in the flesh when cooler during their final maturation.

Hi Vladimir,

here are my most productive trees last year. I live in Canada so all my citrus are in container

- meyer lemon

- santa teresa lemon

- persian lime

- calamondin

- budda hand

- minneola tangelo

- shiranui

- moro blood orange (this one is a hit or miss. I guess that I am lucky!)

- sudashi

I hope that it helps.

Amy

How many fruit do you get per tree?

Vladimir, it depends on the tree.

Shiranui gave me 5-6 trees this year (third year). The first year, it gave me none, second year two. And you know what? Oh I enjoyed each fruit! They are so good! I saw some at the grocery but at 4.99$/lb it’s too expensive for me. My fruits are as big as the one in the grocery this year!

Calamondin gave me between 20-30 fruits I guess. I didn’t count but I know that I had to give some to my mother lol. it’d my first year with the tree.

Minneola tangelo: third year and it gave my around a dozen but I should have thin some. The fruits are smaller than the one at the grocery. Last year, I got my first two fruits and they were smaller than the one at the grocery.

Sudashi: I have this one for two years now. First year I had less around 6-7 fruits and this year I had a dozen during winter.

Buddha hand: I got this one last summer and this year I have five fruits hanging on the tree. Not sure what to do with them but they are so special!

Moro blood orange: I don’t what is special my treevbut it produces non stop this year. I have it for three years. The first three years it didn”t produced anything but this year, I have ten orange hanging on my tree and it has flower buds!

Santa teresa: I think that it’s my second year with this one but I am pretty sure that it will outperform my meyer lemon. We shall see abou this one. So far I have more than 20 little lemons but maybe it will drop some.

persian lime: my third year two. It’s a consistant bearer and gave me at least a dozen limes each year.

Meyer lemon: also around a dozen each year.

Except for my meyer tree which I have for more than ten years, all my other trees are under my care for three years or less. I apply what I learn here and my trees are oroducing more and more. Oh also Vladimir, this year I overwintered all my trees in my greenhouse and I don’t have fruit drops as much as in my basement.

Amy

Vladimir. Just saw this Meiwa kumquat on poncirus trifoliata, Flying dragon, or own roots. My New Zealand lemonade in containers do poorly on US897 and C35 and is on trial but nice so far on sour orange. My in ground outside NZL does well outside and produce 41 orange size sweet lemons this past winter. My Fukushu kumquat handles low light levels very well in the winter. No fruit yet. My Valentine pomelo did very poorly in containers but is doing very well outside in ground. It is setting new fruit. My hardy Chicago kumquats are the easiest to grow and fruit well in a 5 gallon bucket.

Steve