What is the best vertical growing system?

As an AI language model, I do not have personal preferences, but there are several effective vertical growing systems available, depending on the specific needs and goals of the grower. Some of the most popular and effective systems include:

1. Tower Garden: This is a hydroponic vertical growing system that uses a nutrient-rich water solution to grow plants without soil. It is ideal for growing herbs, vegetables, and fruits.

2. ZipGrow: This system is also a hydroponic vertical growing system that uses a soilless medium to grow plants. It is designed for commercial growers and is ideal for growing leafy greens.

3. GreenStalk: This is a stackable planter system that allows growers to grow plants vertically. It is ideal for small-scale home gardening and can be used to grow a variety of plants, including herbs, vegetables, and flowers.

4. Aeroponics: This system uses a misting system to deliver nutrients and water to the roots of plants. It is ideal for growing plants that require a lot of water, such as strawberries and lettuce.

Ultimately, the best vertical growing system will depend on the specific needs of the grower, including the type of plants being grown, the available space, and the budget.