Sadie and Holly are scared of conifers

We have done endless amounts of planting since Sadie was born. Both girls love sowing seeds, planting bulbs, pulling the bulbs back out when I'm not looking and lining them up, etc. To date we have only ever planted deciduous trees. There's a reason for it, sunlight will always make it through to the ground below so no matter how tall and broad the trees get they'll never fully block the light, particularly important around the vegetable patch. We have definitely planted enough trees that I would feel certain that neither of my children suffer from dendrophoia, the fear of trees.
I went to Lidl yesterday to pick up two of their conifers since they were only €5 and I have spots for them. As usual, I had Holly in the seat of the trolley and Sadie was standing in the back. I put the two trees in the back with Sadie. She SHRIIIIIIIIIIIIIIIIIEEEEEKED and jumped right out of the trolley and climbed up into my arms. I had no idea what was wrong, she was wailing. "I don't love the trees," "get them away," "I don't like how they moooooooooove."
So then Holly decided she didn't like how they moved. Honestly, everyone was looking at us. You'd think I'd be used to this from everyone looking at us when we're in the multi-story carpark (Sadie and Holly like to scream their heads off in there to hear the echo but it looks like they're being kidnapped). There was an attempt by a man to show that he wasn't afraid of the tree and then by a woman. These very kind gestures resulted in Sadie and Holly then also claiming they were afraid of the man and the woman. I thought we would never get out of there. It took ages too because I had to carry Sadie while pushing the trolley and try to keep Holly in the seat that she was frantically trying to scramble out of. With every little push to the counter the tress were swaying menacingly, setting Sadie and Holly off with every little movement.
You know how this ends, don't you? We got home, I hid the trees. Sadie and Holly ate, played, we went for a walk, they got ready for bed. As usual they chatted about what they would do the next day and of course they got very excited at the idea that they'd get to plant the trees!
So, if you've passed a woman planting conifers and thought it was strange that she seemed to be ignoring the two small children who were roaring and trying to claw their way over the gate as if they were trying to get away from extreme danger, relax, they're just afraid of how the conifers move.