In addition to Jewelweed (Impatiens spp.), Caesalpinia gilliesii (Hook.) D. Dietr. has seed pods that explode when ripe. It's a dessert plant and the pods explode from heat. I harvested some wild seed pods two years ago and they were sitting on the counter in my kitchen when they exploded. They flew everywhere! I managed to get some of them to grow, and finally this year the first one is blooming!
In addition to Jewelweed (Impatiens spp.), Caesalpinia gilliesii (Hook.) D. Dietr. has seed pods that explode when ripe. It's a dessert plant and the pods explode from heat. I harvested some wild seed pods two years ago and they were sitting on the counter in my kitchen when they exploded. They flew everywhere! I managed to get some of them to grow, and finally this year the first one is blooming!