Answer: Corylus avellana 'contorta' is slow growing, which makes it a perfect specimen for container growing. Their mature height is only about 8', and will probably be smaller if kept in a container. You can leave yours in the nursery pot until the roots begin escaping from the drainage holes (an indication it is pot-bound), or you can transplant it into a larger, more decorative pot. You can start with a 5-gallon sized pot and move it to a larger one in 4-5 years. Use a 50-50 mixture of garden soil and potting soil; garden soil for weight and potting soil for fast drainage. Without the garden soil your filberts could topple over in the wind because most of the weight would be at the top of the plant rather than at the root area. Filberts will grow in full sunshine to part afternoon shade. Soil in containers dries out quickly so check it every few days during the summer to make sure it doesn't become bone-dry.
Good luck with your new trees.
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