Sorry, haven't been coming to this board unless I get updates, but we should all post more!
I have never attended a workshop. Here, we have two plants that attract the butterflies. Crown flowers, and not sure what the other plant is called, but it is a big tree shrub that has tiny purple, and white flowers. We have two of them. It also attracts chameleons.
Here is how the crown flower looks like. And we make leis out of them.
They were on Friday, Saturday and Sunday this year. If you want to go to one, get there about an hour before because there are limited spaces and very popular. If you go to the first, but do not get in, this year they gave out tickets for the next one. This year butterflies were the topic, and the plants we were given attract them.