Your mailbox garden is beautiful LeaSmea!
So after all my planning some lovely person has plowed their car through it about once a week since early March and my mailbox is currently at about a 45 degree angle and broken I'm pretty sure I know who it is and it's clear they're turning around in our driveway based on the angle of the tracks. Last week they drove about 5 feet into my garden... grrr! Their back tire took out one giant allium and the front tire swiped through the remaining 2 giant alliums. My blood was boiling!
As a solution, I have invested in a 150lb rock! It's a beautiful little boulder that should also be functional in protecting my garden. I've also realized that I will have to build a dry river bed since the lowest point has been very soggy so far this Spring. I bought a trellis online but it arrived damaged so I've decided to get creative and make my own trellis. I'll post a photo if it works out. I also think I lost the gardenia over the winter... this poor failure of a garden On a positive note, my lavender has now survived being run over by the car twice now so apparently it was a good hardy choice!