GReat experience; Tough for people far north to do.
This was a fun expereince last year for my kids. We had two egg cases and had tons of baby mantis! It took about 3 weeks for the first one to hatch and 5 for the other one. Sadly, it was far too cold outside here in northern Minnesota to let them go outside. So, we let the few surviors go on various house plants and hoped they would survive on the gnats that tend to live in my house plants. They didn't survive though. I would really love for a few of them to make it to adulthood so they could live in my garden. There's just not enough super tiny prey available here until later June. We had the same problem with our butterflies last year too due to unseasonable cold weather and an inability to release them. Hopefully this season will be better for the butterflies but I'm not sure the mantis will work for us because they are only available at a time of year we are still locked in the cold. :-(
We had such a BLAST watching them grow !!.
My whole family enjoyed watching these beautiful butterflies grow . My 4 yr old loved feeding them . I would recommend this for anyone with children . Its an awesome learning experience . I wish I could add pics to show how they look . We will be releasing ours this week .