In warmer regions this plant can be short lived so replant every year or two.
Growing plants on rock walls.
There are many plants that can grow well in the crevices of rock walls so be sure to weed out any tree seedlings or other volunteers that may settle in between rocks.
To tough forgiving annuals such as wallflowers erysimum cheiri trailing lobelia erinus and snapdragons antirrhinum majus that reseed themselves from year to.
Below are some excellent plants for gardening in stone walls.
Alpine plants which often dislike wet conditions and are adapted to growing in poor soils are another option as are many wild flowers such as welsh poppy which thrive in poorer soils.
Creeping thyme is aromatic like the edible herb but it s mainly grown as a ground cover or to fill in space between stepping stones.
It readily grows in nutrient poor soil as long as it has good drainage.
Commonly called basket of gold perennial alyssum makes a wonderful wall or rock garden plant.
The plant will cascade over rocks and low stone walls in a rock garden to soften the setting.
They do not need a lot of water to grow which makes them ideal for rocky soil that will not retain water.
Hens and chicks are great plants for any rock garden because these small plants multiply as they grow and because of their size they are able to creep into the smallest spaces in the garden to make it fuller.
Plants with a trailing habit such as ivy leaved toadflax are designed for cascading down rock faces or scree slopes and can thrive in a wall.