My newest round of outdoor critters are SCALE insects. I found these today on a flowering girl. The infestations can become way out of control, like aphids and Thrips. Often they will completely cover the stems of the plants. They feed on the sap of the plants and can quickly multiply. Best round of defense is a neem oil based spray. You can pick them off if you catch them early, but it's best for prevention to spray/treat them anyway.