Hi, I’m also in Canada (Quebec) I’m a zone 3 but its closer to a zone 2 because I’m at a high altitude. I also managed to chill my pineapple last August. I also chilled my Orchid tree and a Mexican hat plant but my lemon and my orange trees seem to have benefitted from the chilly nights, They all grew a lot. and are now producing tuns more fruit than ever before

Although the lemon and the orange plants are subtropical, but I did not know what you mean, you chilled the plants.

By the way, usually citrus plants have different root stocks; do you know which root stock you had chosen before you planted them?

Are your plants in pots or in the ground? What is the type of soil?

Thank you.

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bob