Raising garden beds with current native plants

I  have a bed which we dug 2 years ago, and added Anise Hyssop,  Pearly Everlasting and Virginia Mountain Mint.  All of which are doing very well, but the soil in the bed has subsided, and is now 4 ”…

Hyssop falling over

Hi there, I planted a giant hyssop and a regular anise hyssop June this year, they both grew and established very quickly. However, they are tall and a bit weak in that the top with the flowers are falling over…