Might be horseweed, Conyza canadensis. http://images.google.com/images?hl=en&q=conyza&um=1&ie=UTF-8&sa=N&tab=wi Here is a link that might be useful: Conyza canadensis

The ones I've seen aren't terribly attractive when they're not in bloom, but the flowers are worth it - one of the first things to bloom in the spring. My mom used to bring them in and force them. There was a ratty bush in our yard when my folks bought their house in 1958, and when my dad sold it last year it was still there, covered with weedy vines but looking much the same. They're tough. WW

Ficus are a Mealybug favorite. You don't mention that you have used horticultural oil. Oil will kill Mealybugs if done correctly. However living in California you probably have a ready source for re-infestation in your yard. So it is likely that you are killing them and they are re-infesting your Ficus almost immediately. You may be able to reduce the number of Mealybug in your yard by introducing Biological controls such as the Mealybug Destroyer, and limiting the use of broad spectrum pesticides, if you use these. The main thing is to stop them re-infesting your plant. If you must after trying everything else you can mix some Imidacloprid into the soil. Be sure to find a formula registered for house plants and follow the label to the letter. Another caution on using the Imidacloprid is that it can encourage Spider Mites, so only use it where you absolutely must and watch out for the Mites. Here is a link that might be useful: Mealybug dispersal

Robbi, nice to hear from you! You have been a busy lady...your quilt is just lovely! Love what you made for your Mom as well. Welcome back...don't be a stranger. v.