Xeramtheum said:I was able to knock out a horrible infestation within 36 hours on my Rothecas a few years ago with diatomaceous earth. You need to get a duster that makes clouds of it .. those dusters that you pump don't really work all that well .. the one I bought was pricey but it makes wonderfully wonderous clouds. You just want to make sure you are up wind of it and you get the dust on the bottom of the leaves. Here is a link to the duster:
https://www.amazon.com/dp/B002ISCG7M%3FSubscriptionId%3DAKIAILSHYYTFIVPWUY6Q%26tag%3Dduckduckgo-z-20%26linkCode%3Dxm2%26camp%3D2025%26creative%3D165953%26creativeASIN%3DB002ISCG7M/
daylilydreams said:Hope you can save your balloon flowers they are a lovely addition to the garden and bloom a long time if you remove spent blooms. I have the single and double in the blue color in my garden once you get them established they come back year after year. Here in the north they are late to emerge in the spring so a person needs to keep in mind where they are planted. I know some people have trouble getting them started but they are so worth the effort for the beauty they add to the garden. I bet mine have been in the garden at least 15 years.