On the side of our house nearest to these weeds, I noticed a bunch of bugs. They all looked like this in various sizes:
There were quite a few of these on the house, so I squished about 15 of them and then still kept seeing more crawling around. Before I took the next step and started spraying bug killer or stomping them like mad, I thought to myself "Maybe I should look up what kind of bugs these are". I went inside and typed "orange black bug" into google. To my surprise, these were ladybugs in an intermediate stage! I guess our yard (and hopefully future garden) will be missing a few ladybugs this year. Luckily more have come back and it looks like we'll have plenty. Here is one of them nearly transformed into a full red-with-black-dots ladybug:
Please ignore the dying pineapple plant we're trying to grow after visiting the Dole plantation