My 2 plants grow very tall. They become topheavy and then fall all over the place. Looks very sloppy.
How can I avoid this?
Certified GKH Gardening Expert
These can benefit from some light pruning and deadheading, to control their shape and size. It could also be that they are lacking light if they are in a shaded area, or if an area seems to get too dry.
Here is an article to help you with their care: https://www.gardeningknowhow.com/edible/herbs/hyssop/cutting-back-anise-hyssop.htm