For example, you would need a 50-gallon bag if you’re planting something as large as a grapefruit tree.

Use at least 1 inch (2. 5 cm) of pebbles or perlite in the bag.

If your bag already has drainage holes, you can skip this step.

You can, however, grow larger items, like trees, if you have purchased a very large growing bag.

Fabric bags usually need to be watered more often than plastic bags.

If you put a deep container under the growing bag, you may need a container to catch the overflow.

If you plant more than one plant in the same bag, make sure you water them thoroughly.