During the swarm, a lot of this was going on.  Even though the majority of the ladybugs flew away over the next few days, this picture gives me hope that soon my plants will be crawling with ladybug larvae.  Overall still uncertain about the overall benefits of the ladybugs we put on our plants, but it was a fun and interesting experiment.  Over 95% of the bugs were delivered alive (Hirt's Garden supply, via Amazon). Delivery took about 5 days. Our porch garden was probably not the ideal place to test the benefits of these aphid and other pest predators, as 1500 ladybugs probably need much more food then our paltry garden could provide.