The Euryops are deer resistant and the herd will pass them by for better grazing edibles. ... The Euryops is an easy lay-up for any gardener. Happy gardening.

What animals eat Portulaca?

Desert tortoises and land iguanas are known to eat Portulaca, too, but I think we can be pretty certain that those aren't your culprits. It is reported to be a favorite of deer which could be the culprit in some parts of Austin. However, I suspect the deer would go after all the plant, not just the flowers.

Is Portulaca grandiflora deer resistant?

This plant is not favored by deer in most places.