I don't think so. They do have a small garden shop near the Museum. Perhaps you could call.
No. The only things close to plants that are sold online are a moss kit and pixie patch kit: https://www.winterthurstore.com/category/282/Enchanted-Woods.html
I don't believe so?! But after checking online I still wasn't able to find an accurate answer maybe try calling their number and speaking with a member of their team!
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