My red yuccas have been seriously tested with aphids this summer, as I had shown in another photo ( https://www.nikoncafe.com//forums/viewtopic.php?t=7572&highlight= ). The ants harvest honeydew from aphids, the aphids harvest from the yucca blossoms, and parasitic wasps lay eggs in the aphids. It's a fairly dramatic set of events. The last red shoot started to open today, so I deployed my camera, this time with my 105mm f/2.8 micro lens. D100, 105mm f/2.8 Micro-Nikkor, ISO400, f/14, 1/60s, processed in NC, cropped As you can see, the inspects are starting their movement on the flower. The buds on this tip are perhaps 2-4mm in length, if that scale assists in the viewing. Other buds were larger, but they were already swarmed. John P.