Let's grow some grapes in a garden planter! Doesn't this sound hard? We agree! But, surprisingly if you follow some specific guidelines it's not all that hard at all. This is the perfect project for people with limited patio or porch space. Apartment dwellers, condos or small houses with small yards. Give it a go and see how you do.
One of the most important things to remember when starting out is to select a nice large and sturdy garden container. This is not the time for starting with a undersized garden planter. On the other hand you don't want the plant to be swimming either. You should shoot for a deep (18 to 24" wide container and 18" to 24" deep. We recommend you use a planter made out of terracotta. This clay pot is meant to breathe and is the healthiest choice for the plants root system. Of course that doesn't mean you can't use glazed, ceramic or concrete planters. They will all work find as long as they are large enough.
There are many types of grape vines so we recommend asking your local nursery professional what is best for your area. You can go online for lots of information also. Unless you have the room for a trailing grape vine we recommend you start with a dwarf variety.
Plant in spring or summer. Don't use garden soil but instead look for a potting mix that drains well. Mix a good fertilizer into the soil to begin with and use according to the mfg. During the growing season it is best to mulch the top of the garden planter or use a pot topper like garden stone, colored marbles or clay pot broken shards. They will help to keep the moisture from evaporating so fast in the heat.
Let the potted plant grow freely and no pruning till late winter. By not pruning you will develop a strong root system. Come winter you should move the potted grape vine into the garage or preferably indoors. Reduce watering and no fertilizer.