Well, they are chilling out right now as a cold freeze has hit. The lemon tree is about 5 yrs old and the olive is new this year. I have tried olives (arbequena) outdoors, but a good cold snap killed them. This one is in a pot. I even fired up the Jotul in the greenhouse today. Normally we have a small electric heater that will cover it but temps dropped down to 35º so I fired up the little Jotul stove to bring the greenhouse up to 55º.’d love to see pictures of your trees if you have some handy. What do you do for heat in the greenhouse when you need it?
Here is a picture of the lemon. It's in a big tub planter. I move it into the greenhouse in the winter.