Hollyhocks - NOT amateur radio

We have quite a few of these flowers in our front garden. They look splendid, but then go rusty and look a mess. They also self-seed and are very hard to get rid of! 

Once they have flowered it is better to cut them back before the seeds scatter.

We call them "triffids".  Just imagine if they could walk!! If you are thinking about planting any, think hard.