Horsetail and sand helmets in a jar?
Of course, horsetail and marigolds also grow well in regular garden soil to create a beach atmosphere in a garden, but we recommend planting them in pots to prevent them from spreading too much.
If you want to plant in pots, both are fine for this. Plant in regular potting soil and add a layer of beach sand or sand on top, so it visually looks like they are standing in sand.
For pots we also have the extra blue Leymus arenarius 'Blue Dune'.
Marigolds and sandworts: how to plant them
If you are planting a new area by the summer house with horsetail or sand helmets, we recommend four plants per m2 when they are in a p9 (9cm pot). With good care, it can cover the area in one growing season.
We recommend placing the plants in the area where they will be planted, so you can adjust them back and forth a little. When planting, we recommend adding a little long-term fertilizer to each planting hole, this gives the plants the nutrients they need to get started and establish themselves.
If it becomes very dry after planting, for example during the spring, you should water the newly planted area so that the plants do not stop growing, but instead continue their growth.