Q.Praying Mantis Egg Sack
Oct 9, 2020, found a praying mantis sack in my planter. Can I put the sack in a jar until March and then put it back outside to hatch.?
Certified GKH Gardening Expert
You can leave the casing where it is. The eggs will survive winter inside the sac. If you are bringing your planter inside you can break off the stem it is on and place it in a protected area outside.
If you bring it inside the warmth will cause them to hatch too early.