Portable bed intended for nursery?

• Compost container for tomatoes plants

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ He grows his plants in a mixture of growbag compost and soil. ▪ Place the growbag on the frame, feeding the wicks into the water.

Wikipedia Word definitions in Wikipedia
A growbag is a large plastic bag filled with a growing medium and used for growing plants. The growing medium is usually based on a soilless organic material such as peat , coir , composted green waste , composted bark or composted wood chips, or a mixture ...