They do fine with just good soil, sun and water.
They may be cut out of the earth, or formed with soil.
It looked as if a high mountain had been covered with soil almost up to the top.
"Never has my foot lost contact with the soil of Earth!"
"It has something to do with the soil and the weather conditions."
Start with the soil, especially at this time of year when the planting season is getting under way.
It's open country, but not like this - flat as your hand for miles, with deep black soil.
It has been and still is a farming community with very rich soil.
We had two fields and part of another with very fertile soil.
Fill in around the plants with extra soil if needed, and then water well.