Egg pod on roses - friend or foe?
This is very good indeed. These are the egg cases of praying mantis. The praying mantis is a beneficial insect which is a predator insect. It eats other insects, which are the bad pest insects in our gardens. By all means protect these.
Praying mantis are fun to observe and watch grow up in your garden. Here is some information about them from our website: http://extension.umd.edu/hgic/insects/predators-praying-mantid-mantis