Two years ago I took a cycle ride to Sandwich with a box full of seeds from the hollyhocks in my garden.
Alongside the river Stour workmen were rebuilding the defences so I sowed handsful of seeds over the freshly turned earth.
Several plants are well established and have self seeded further along the river bank.
There are six different colours present. This autumn I will try to add some bright yellow and pale peach.
And all this beauty costs nothing.